DEPARTMENT OF THE INTERIOR 

UNITED STATES GEOLOGICAL SURVEY 

GEORGE OTIS SMITH, DlBKCTOB 

Water-supply Paper 336 



WATER RESOURCES OF HAWAII 



1912 



BY 



G. H. PIERCE and G. K. LARRISON 




WASHINGTON 

GOVERNMENT PRINTING OFPIO! 
1914 







Glass £, B&h?- 

Book . ^4 /) 5"ff 



DEPARTMENT OF THE INTERIOR 
UNITED STATES GEOLOGICAL SURVEY 



GEORGE OTIS SMITH, Director 



Water- Supply Paper 336 



WATER RESOURCES OF HAWAII 



1912 



<f> 7 O 



BY 



C. H. PIERCE and G. K. LARRISON 




WASHINGTON 

GOVERNMENT PRINTING OFFIO 
1914 



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1 DM 
JAN 12 1915 



CONTENTS. 



Page. 

Authority for investigations 9 

Cooperation 10 

Scope of work 10 

Field methods of measuring stream flow 11 

Base data 11 

Weir measurements 11 

Velocity-area method 12 

Definition of terms 16 

Convenient equivalents. 18 

Office methods of computing and studying discharge and run-off 19 

Explanation of tables 22 

Accuracy and reliability of field data and comparative results 24 

Division of work 24 

Gaging stations maintained in Hawaii. . . . . . 25 

Geography of the Hawaiian Islands 29 

Station records 34 

Island of Kauai 34 

Waimea River basin 34 

Waimea River near Waimea, Kauai 34 

Kawaikoi Stream near Waimea, Kauai 35 

Waiakoali Stream near Waimea, Kauai 37 

Mohihi Stream near Waimea, Kauai 38 

Waialae Stream near Waimea, Kauai 39 

Kekaha ditch at camp No. 1, near Waimea, Kauai. 40 

Kekaha ditch at flume No. 2, near Waimea, Kauai 42 

Kekaha ditch at siphon near Waimea, Kauai 42 

Kekaha ditch at tunnel No. 12, near Waimea, Kauai 43 

Waimea ditch near Waimea, Kauai 45 

Kamenehune ditch near Waimea, Kauai 47 

Makaweli River basin 48 

Makaweli River near Waimea, Kauai , 48 

Halekua Stream near Waimea, Kauai 50 

Olokele ditch at tunnel No. 12, near Makaweli, Kauai 50 

Olokele ditch at weir near Waimea, Kauai 52 

Poowaiomahaihai ditch near Waimea, Kauai 53 

Hanapepe River basin 55 

East Branch of Hanapepe River at Hanapepe Falls, near Eleele, 

Kauai 55 

Hanapepe River at Koula, near Eleele, Kauai. . 55 

Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai 57 

Hanapepe ditch at Koula, near Eleele, Kauai 59 

Hanapepe ditch at weir near Hana pepe, Kauai 60 

Hanapepe River at Hanapepe Falls, near Eleele, Kauai 62 

Hiloa ditch at Hanapepe Falls, near Eleele, Kauai. 62 



4 CONTENTS. 

Station records — Continued. 

Island of Kauai — Continued. Page. 

Huleia River basin 63 

Huleia River near Lihue, Kauai 63 

Hanamaulu River basin 64 

Hanamaulu River at Kapaia, near Lihue, Kauai 64 

Wailua River basin 66 

South Fork of Wailua River above Waiehu Falls, near Lihue, 

Kauai 66 

Lihue ditch near Lihue, Kauai ..... 68 

Hanamaulu ditch at siphon near Lihue, Kauai 70 

North Fork of Wailua River near Lihue, Kauai 71 

Uhau Iole Stream at 750-foot elevation near Lihue, Kauai 73 

East Branch of North Fork of Wailua River, near Lihue, Kauai. . 74 

Keahua Stream at 750-foot elevation near Lihue, Kauai. 75 

Kawi Stream at 750-foot elevation near Lihue, Kauai 75 

Kanaha ditch at intake, near Lihue, Kauai 76 

Konohiki Stream basin 77 

Konohiki Stream at Makakualele mauka weir, near Kapaa, Kauai. 77 

Konohiki Stream at Makakualele makai weir, near Kapaa, Kauai. . 78 

Kaehulua Stream basin 79 

North Fork of Kaehulua Stream at Kainahola weir, near Kapaa, 

Kauai 79 

Kaehulua Stream at Kuhinoa weir, near Kapaa, Kauai 80 

South Fork of Kaehulua Stream at Wainamuamu weir, near Kapaa, 

Kauai 81 

Kapaa River basin 82 

Kapaa River at Kapahi, near Kapaa, Kauai 82 

Akulikuli Spring at weir near Kapaa, Kauai 84 

Kapahi ditch at Kapahi, near Kapaa, Kauai 85 

Kaneha ditch, at weir near Kealia, Kauai 86 

Anahola River basin 87 

Anahola River at 1,140-foot elevation near Kealia, Kauai 87 

Anahola River above dam at Kiokala, near Kealia, Kauai 88 

Anahola ditch at Kiokala, near Kealia, Kauai 89 

Kalihiwai River basin 96 

Kalihiwai River near Kilauea, Kauai 90 

Hanalei River basin 91 

Hanalei River near Hanalei, Kauai 91 

China ditch near Hanalei, Kauai. 92 

Kuna ditch near Hanalei, Kauai 93 

Lumahai River basin 95 

Lumahai River near Wainiha, Kauai 95 

Wainiha River basin 95 

Wainiha River near Wainiha, Kauai 95 

Wainiha canal at intake, near Wainiha, Kauai 97 

Miscellaneous measurements on Kauai in 1912 98 

Pumped water on Kauai 99 

Ditch seepage and losses on Kauai 99 

Island of Oahu 100 

Palolo Stream basin 100 

Waiomao Stream at 900-foot elevation near Honolulu, Oahu 100 

Waiomao Stream above Pukele Stream, near Honolulu, Oahu 102 

Pukele Stream at Mahoe Springs, near Honolulu, Oahu 104 



CONTENTS. 5 

Station records — Continued. 

Island of Oahu — Continued. Page. 

Manoa Stream basin. 106 

Manoa Stream at upper end of valley near Honolulu, Oahu. ..... 106 

Manoa Stream at College of Hawaii near Honolulu, Oahu 108 

Manoa Stream at Waialae road, near Honolulu, Oahu 108 

Pauoa Stream below Kahuawai Spring near Honolulu, Oahu 109 

Kahuawai Spring near Honolulu, Oahu 110 

Nuuanu Stream basin Ill 

Nuuanu Stream at Kuakini Street, Honolulu, Oahu. Ill 

Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahu 113 

Luakaha weir in Nuuanu Valley, near Honolulu, Oahu. 115 

Waikane Stream basin 116 

Waikane Stream near Waikane, Oahu 116 

Waiahole Stream basin 117 

"Waiahole Stream at Manianiaula, near Waikane, Oahu 117 

Waiahole Stream at Waiahole, near Waikane, Oahu 119 

Kahanaiki Stream near Waimanalo, Oahu 121 

Kailua Stream near Waimanalo, Oahu 122 

Pohakea Stream near Waimanalo, Oahu 122 

Kamakalepo Stream near Waimanalo, Oahu 123 

Kaimi Stream near Waimanalo, Oahu 124 

Makawao Stream near Waimanalo, Oahu 124 

Makawao ditch near Waimanalo, Oahu 125 

Wong Leong ditch near Waimanalo, Oahu 125 

Waimanalo ditch below reservoir near Waimanalo, Oahu 126 

Pump ditch near Waimanalo, Oahu 127 

Miscellaneous measurements on Oahu in 1912 128 

Artesian wells 128 

Island of Maui 129 

West Maui 129 

Kahakuloa Stream basin 129 

Kahakuloa Stream at Kahakuloa, near Waihee, Maui 129 

Waihee Stream basin . . . . 130 

Waihee Stream at dam near Waihee, Maui. 130 

Waihee canal near Waihee, Maui 132 

Waihee canal at weir near Wailuku, Maui. . . 133 

Spreckels ditch near Waihee, Maui 134 

Waiehu Stream basin 135 

North Waiehu Stream near Wailuku, Maui 135 

South Waiehu Stream near Wailuku, Maui. . . ... 136 

Iao Stream basin ; 137 

Iao Stream near Wailuku, Maui 137 

Maniania ditch near Wailuku, Maui 139 

Waikapu Stream basin 141 

Waikapu Stream near Waikapu, Maui 141 

South Side Waikapu ditch near Waikapu, Maui 142 

Palolo (Everett) ditch near Waikapu, Maui 144 

Ukumehame Stream basin 146 

Ukumehame Stream near Olowalu, Maui 146 

Olowalu Stream basin 147 

Olowalu ditch No. 1, near Olowalu, Maui 147 

Launiupoko Stream basin ... 149 

Launiupoko Stream near Lahaina, Maui .. .., - - - 149 



6 CONTENTS. 

Station records — Continued. 
Island of Maui — Continued. 

West Maui — Continued. Page. 

Kauaula Stream basin 151 

Kauaula Stream near Lahaina, Maui. 151 

. Kauaula ditch near Lahaina, Maui 152 

Lahainaluna Stream basin 154 

Lahainaluna Stream near Lahaina, Maui 154 

Kahoma Stream basin 155 

Kahoma Stream near Lahaina, Maui 155 

Kahoma ditch at weir near Lahaina, Maui '.' 156 

Honokawai Stream basin . " 157 

Honokawai ditch near Lahaina, Maui 157 

Honolua Stream basin .- . 158 

Honolua ditch near Honokahau, Maui 158 

Honokahau Stream basin 159 

Honokahau ditch at intake, near Honokahau, Maui 159 

Honokahau ditch at Honokawai weir, near Honokahau, Maui . . 160 

Miscellaneous measurements , 162 

East Maui — 

Koolau ditch region 162 

Koolau ditch near Keanae, Maui 162 

Spreckels ditch region 164 

Haipuaena Stream near Huelo, Maui 164 

Puohakamoa Stream near Huelo, Maui. 166 

Alo Stream near Huelo, Maui 168 

"Waikamoi Stream near Huelo, Maui 169 

Oopuola Stream near Huelo, Maui 171 

Spreckels ditch at station No. 1, near Huelo, Maui 172 

Spreckels ditch at station No. 2, near Huelo, Maui 174 

Spreckels ditch at station No. 3, near Huelo, Maui 176 

Spreckels ditch at station No. 4, near Heulo, Maui 178 

Spreckels ditch at station No. 5, near Heulo, Maui 179 

Spreckels ditch at station No. 6, near Huelo, Maui 181 

Spreckels ditch at station No. 7, near Huelo, Maui 183 

Spreckels ditch at station No . 8, near Huelo, Maui 185 

Center ditch region 186 

Center ditch near Huelo, Maui 186 

Hamakua ditch region , 188 

Nailiilihaele Stream near Huelo, Maui 188 

Kailua Stream near Huelo, Maui 189 

Hoolawaliilii Stream near Huelo, Maui 190 

Hoolawanui Stream near Huelo, Maui 191 

Honopou Stream near Huelo, Maui 193 

Halehaku Stream weir near Huelo, Maui 194 

Opana Stream near Huelo, Maui P 196 

Opana ditch near Huelo, Maui 196 

New Hamakua ditch at Nailiilihaele weir, near Huelo, Maui. 198 

New Hamakua ditch at Halehaku weir, near Huelo, Maui . . . 199 

New Hamakua ditch at station No. 1, near Huelo, Maui 200 

New Hamakua ditch at station No. 2, near Huelo, Maui 200 

New Hamakua ditch at station No. 3, near Huelo, Maui 201 

New Hamakua ditch at station No. 4, near Huelo, Maui 202 

New Hamakua ditch at station No. 5, near Huelo, Maui 203 



CONTENTS. 7 

Station records — Continued. 
Island of Maui — Continued. 
East Maui — Continued. 

Hamakua ditch region — Continued. Page. 

Old Hamakua ditch at Opana weir, near Huelo, Maui 204 

Kaluanui ditch at Puuomalei, near Hamakuapoko, Maui 205 

Lowrie ditch at Opana weir, near Huelo, Maui 207 

Haiku ditch at Peahi weir, near Huelo, Maui 208 

Miscellaneous measurements 209 

Pumped water on Maui. 209 

Island of Hawaii 212 

Hilo group of streams 212 

Wailuku River near Hilo, Hawaii 212 

Honolii River at Kaiwiki, near Hilo, Hawaii 213 

Kawainui River at Pepeekeo, near Hilo, Hawaii 215 

Stations Nos. 1, 2, 3, and 4, at Piihonua, near Hilo, Hawaii 216 

Stations at 2,700-foot level in the forest back of Hilo, Hawaii 219 

Station records 219 

Hamakua group of streams 367 

Kawainui River near Waipio, Hawaii 367 

Waipio River below Koiawe, near Waipio, Hawaii. 368 

Waipio River below Waima Stream, near Waipio, Hawaii 369 

New Hamakua ditch at Waima Stream, near Waipio, Hawaii 369 

New Hamakua ditch at main weir, near Kukuihaele, Hawaii 370 

Kohala group of streams 371 

Kohala ditch near Kohala, Hawaii 371 

Miscellaneous measurements 381 

Rain gaging 381 

Index 387 



WATER RESOURCES OF HAWAII, 1912. 



By C. H. Pierce and G. K. Larrison. 



AUTHORITY FOR INVESTIGATIONS. 

This volume contains results of measurements of the flow of cer- 
tain streams and ditches in the Territory of Hawaii made during the 
calendar year 1912. The investigations leading to the report were 
made by the United States Geological Survey in cooperation with the 
Territory of Hawaii, under the general sanction of the organic law 
of the Survey (Stat. L., vol. 20, p. 394), which contains the following 
paragraph: 

Provided, That this officer [the Director] shall have the direction of the geological 
survey and the classification of public lands and examination of the geological struc- 
ture, mineral resources, and products of the national domain. 

As water is the most abundant and most valuable of the minerals, 
the investigation of water resources is authorized under the provision 
for examining mineral resources. The work has been supported since' 
the fiscal year ending June 30, 1895, by appropriations in successive 
sundry civil bills passed by Congress under the following item: 

For gaging the streams and determining the water supply of the United States, and 
for the investigation of underground currents and artesian wells, and for the prepara- 
tion of reports upon the best methods of utilizing the water resources. 

The legislature of the Territory of Hawaii approved on March 22, 
1909, "An act to promote the conservation and development of the 
natural resources of the Territory/ ' which provided in substance as 
follows : A special tax of 2 per cent shall be levied, assessed, and col- 
lected annually on all incomes in excess of $4,000; and all amounts 
so collected shall constitute a special fund to be expended only for 
the encouragement of immigration and the conservation of natural 
resources in the proportion of three-fourths for immigration and one- 
fourth for conservation. The conservation fund shall be used for the 
development, conservation, improvement, and utilization of the nat- 
ural resources and shall be available for expenditure at such times 
and in such manner as a board of three persons appointed in accord- 
ance with section 80 of the organic act shall, with the approval of the 
governor, determine. 

An act of April 26, 1911, amended the original act so as to extend 

it until December 31, 1913. 

9 



10 WATER RESOURCES OF HAWAII, 1912. 

COOPERATION. 

Under the authority conferred by the Federal and Territorial 
legislation, the Director of the United States Geological Survey and 
the Governor of the Territory of Hawaii entered into a cooperative 
agreement, dating from July 1, 1910, for "the gaging of streams and 
the determination of the water supply of the Territory of Hawaii." * 
The principal features of this agreement are : 

1 . The United States Geological Survey assumes the responsibility 
of gathering, analyzing, and publishing the data. 

2. During the progress of the work all notes, maps, and data gath- 
ered as a result of field studies are at all times open to inspection by 
the representative of the Territory, and if they are not entirely satis- 
factory the agreement can be terminated. 

3. Accounts for payment of salaries, travel and subsistence, sup- 
plies, or other expenses necessary to the completion of the work shall 
be rendered in the manner required by the laws and regulations of 
the contracting parties, and vouchers shall be preferred to either 
party for payment according as it may be convenient or according 
to the balance remaining in the respective allotments. 

4. The cost of publication is borne entirely by the Geological 
Survey. 

The Territory of Hawaii has been represented in the cooperation 

by the board of allotment appointed by Gov. Walter F. Frear, and 

consists of J. P. Cooke (chairman), Marston Campbell, and E. V. 

Wilcox. 

SCOPE OF WORK. 

The investigations of stream flow in the Territory are not complete, 
nor do they include all the streams that might advantageously be 
studied. They include, however, as many of the streams and ditches 
on the four larger islands as the available appropriations would allow. 
It is essential that records of stream flow should be kept during a period 
of years long enough to determine within reasonable limits the range 
of flow from the maximum to the minimum. The length of such a 
period manifestly varies for different streams; Experience has shown 
that the records should be kept from 5 to 20 years. 

In the performance of this work an effort is made to reach the 
highest degree of precision possible with a rational expenditure of 
time and money. In all engineering work there is a point beyond 
which refinement is needless and wasteful, and this statement applies 
with especial force to stream-measurement work in Hawaii. It has 
been found, however, that it is possible to obtain data which are 
sufficiently accurate, although many of them presented in this report 
are for periods too short to admit of definite conclusions. 

1 The United States Geological Survey is also cooperating with the Territory of Hawaii in mapping the 
several islands. The whole of the island of Kauai and a part of the island of Hawaii have been mapped. 



FIELD METHODS OF MEASURING STREAM FLOW. 11 

Records have been obtained at about 200 different points in the 
Territory, and in addition to the observations at the regular stations, 
miscellaneous measurements at many other places have been made. 
Records have also been collected regarding precipitation on areas 
drained by the principal streams and at a number of points in the 
mountains at high elevations. Evaporation losses have been studied 
and data obtained at various places where such losses are serious. 

FIELD METHODS OF MEASURING STREAM FLOW. 

BASE DATA. 

In making plans for power, irrigation, municipal water supply, and 
other projects involving the use of water from surface streams it is 
necessary to have data from which both the total flow of the stream 
and its distribution from day to day throughout the year can be 
obtained. The data necessary for obtaining such information are 
daily gage heights, which give the fluctuations of rise and fall of the 
stream, and measurements of discharge at various stages, from which 
a rating curve and table can be prepared, giving the discharge for 
any stage. Such a rating is possible from the fact that so long as the 
conditions at the controlling point in the stream remain the same 
there will be the same discharge for any given gage height. 

The determination of a discharge is termed a discharge measure- 
ment and points at which discharge measurements are made and 
records of daily fluctuations of stage are kept for determining the 
daily flow are termed gaging stations. 

Gaging stations may be divided into two classes, known as weir 
stations and velocity-area stations. At weir stations the head of 
water on the crest of the weir is measured and the discharge com- 
puted by means of a formula. The discharge at velocity-area 
stations is obtained by measuring the velocity of the current and 
the area of the cross-section, the product of the two giving the dis- 
charge. 

The data presented in this paper were collected at both weir and 
velocity-area stations. 

WEIR MEASUREMENTS. 

Unquestionably a weir properly constructed and of a type for 
which accurate coefficients have been determined is one of the most 
convenient and reliable means of measuring small quantities of water. 
In practice, however, weirs rarely conform to the requirements 
imposed by the experimenter who derived the coefficients. If the 
crest of the weir is sharp and clean and sufficiently high above the 
bottom of the leading channel and the end contractions are complete 
and the velocity of approach is wanting, or negligibly small, and if 
the head on crest is measured at a distance of 6 or 8 feet back of the 



12 WATER RESOURCES OF HAWAII, 1912. 

overfall, the Francis formula will give good results. On the other 
hand, if these essential conditions are not complied with, especially 
if the velocity of approach is considerable, and the contractions are 
imperfect, the Francis formula will not give accurate results. This 
is particularly true if the weir is improperly constructed and there is 
leakage around and under it, as is so frequently the case in practice. 
Observations made on various types of weirs in Hawaii show that 
of the weirs in use in the Territory not all are giving accurate results. 
If the error is known so that corrections can be made the trouble is 
largely mitigated, but faulty weir records are too often accepted with- 
out investigation as to their accuracy. 

VELOCITY- ARE A METHOD. 

The velocity-area method of measurement consists of determining 
the mean or average velocity of the water past a given cross-section 
area. The area of the cross section at right angles to the direction 
of flow is determined by soundings which are taken at such distances 
apart as will develop the contour of the stream bed. The depths are 
recorded and also their distances from some arbitrarily chosen initial 
point on one side of the stream. 

The method of making the soundings depends on the size and stage 
of the stream. On ditches and small streams, where the depths and 
velocities are not large, a graduated rod may be used to advantage; 
on large streams, which must be measured from bridges or cables, a 
lead weight and sounding line must be used. The weights are of 
different sizes — 6 J, 10, or 15 pounds — according to the swiftness of 
the current, and are torpedo shaped, so as to offer as little resistance 
as possible to the moving water. 

On streams with beds which are permanent or nearly so, like the 
South Fork of Wailua River on the island of Kauai and the Wai- 
luku River on the island of Hawaii, a standard cross section is 
usually constructed from careful soundings and referred to the zero 
of the gage, so that the depths for any stage can be found by adding 
the gage height at that stage to the depths below the zero of the gage. 
This method is especially useful at high stages, where it is difficult 
to make accurate soundings. 

After the cross-section area of the stream has been measured by 
soundings and horizontal distances, the velocity is determined at a 
number of points. These measurements of velocity should be made 
at frequent intervals across the stream and close enough to take ac- 
count of any abrupt change in the velocity. For convenience, the 
velocities are usually observed in the same verticals at which sound- 
ings are made. On some streams fairly good measurements of veloci- 
ties may be made by means of subsurface floats. This method is 
applicable, however, only to channels of uniform cross-section area 



FIELD METHODS OF MEASURING STEEAM FLOW. 13 

over a considerable distance and is very unsatisfactory for use on 
natural streams like those of Hawaii. 1 

The velocity of flow is best determined by the current meter, which 
is a form of water wheel actuated by the current, and of such size and 
shape that it can easily be placed at any point in the stream. 

The new type of penta-recording current meter consists of six cups 
attached to a vertical shaft which revolves on a conical hardened- 
steel point when immersed in moving water. The revolutions are 
indicated electrically. The rating, or relation between the velocity 
of moving water and the revolutions of the wheel, is determined for 
each meter by drawing it through still water for a given distance 
at different speeds and noting the number of revolutions for each 
run. From these data a rating table is prepared which gives the 
velocity in feet per second of moving water for any number of revo- 
lutions in a given time interval. The ratio of revolutions per second 
to velocity of flow in feet per second is very nearly a constant for 
all speeds and is approximately 0.45. 

Three classes of methods of measuring velocity with current meters 
are in general use — multiple-point, single-point, and integration. 

The two principle multiple-point methods in general use are the 
vertical velocity curve and 0.2 and 0.8 depth. 

In the vertical velocity-curve method a series of velocity determi- 
nations are made in each vertical at regular intervals, usually about 
10 to 20 per cent of the depth apart. By plotting these velocities as 
abscissas and their depths as ordinates and drawing a smooth curve 
among the resulting points, the vertical velocity curve is developed. 
This curve shows graphically the magnitude and changes in velocity 
from the surface to the bottom of the stream. The mean velocity 
in the vertical is then obtained by dividing the area bounded by 
this velocity curve and its axis by the depth. This method of obtain- 
ing the mean velocity in the vertical is probably the best known, but 
on account of the length of time required to make a complete meas- 
urement its use is largely limited to the determination of coefficients 
for purposes of comparison. 

In the second multiple-point method the meter is held successively 
at 0.2 and 0.8 depth, and the mean of the velocities at these two points 
is taken as the mean velocity for that vertical. On the assumption 
that the vertical velocity curve is a common parabola with horizontal 
axis, the mean of velocities at 0.22 and 0.79 depth will give (closely) 
the mean velocity in the vertical. Actual observations under a 
wide range of conditions show that this multiple-point method gives 
the mean velocity very closely for open-water conditions and that in 
a completed measurement it seldom varies as much as 1 per cent 

1 Further information regarding the float method is given in Water-Supply Paper 95 and in textbooks 
on stream flow. 



14 WATER RESOURCES OF HAWAII, 1912. 

from the value given by the vertical velocity-curve method. It is 
very extensively used in the regular practice of the United States 
Geological Survey. 

The single-point method consists in holding the meter either at 
the depth of the thread of mean velocity or at an arbitrary depth 
for which the coefficient for reducing to mean velocity has been 
determined or must be assumed. 

Extensive experiments by means of vertical velocity curves show 
that the thread of mean velocity generally occurs between 0.5 and 
0.7 total depth. In general practice the thread of mean velocity is 
considered to be at 0.6 depth, and at this point the meter is held in 
most of the measurements made by the single-point method. A 
large number of vertical velocity curve measurements, taken on 
many streams and under varying conditions, show that the average 
coefficient for reducing the velocity obtained at 0.6 depth to mean 
velocity is practically unity. The variation of the coefficient from 
unity in individual cases is, however, greater than in the 0.2 and 0.8 
method and the general results are not as satisfactory. 

In the other principal single-point method the meter is held near 
the surface, usually 1 foot below, or low enough to be out of the effect 
of the wind or other disturbing influences. This is known as the sub- 
surface method. The coefficient for reducing the velocity taken at 
the subsurface to the mean has been found to be in general from 
about 0.85 to 0.95, depending on the stage, velocity, and channel 
conditions. The higher the stage the larger the coefficient. This 
method is especially adapted for flood measurements, or for measure- 
ments when the velocity is so great that the meter can not be kept 
in the correct position for the other methods. 

The vertical integration method consists in moving the meter at a 
slow but uniform speed from the surface to the bottom and back again 
to the surface and noting the number of revolutions and the time 
taken in the operation. This method has the advantage that the 
velocity at each point of the vertical is measured twice. It is useful 
as a check on the point methods. In using the Price meter great 
care should be taken that the vertical movement of the meter is not 
rapid enough to vitiate the accuracy of the resulting velocity deter- 
mination. 

In practical work on rough streams, such as exist in Hawaii, the 
meter should be held at 0.6 depth for depths of 0.8 or less. For 
greater depths the meter should be held at two points in the vertical, 
0.2 and 0.8 from tho surface. 

When the mean velocities in the different verticals have been 
found, the average of two adjacent means is taken as the mean 
velocity for that individual section. The area of the section is 



FIELD METHODS OF MEASURING STREAM FLOW. 15 

computed by multiplying the width of the section by the mean depth. 
The discharge of each section is then the product of the area multiplied 
by the mean velocity, and the total discharge of the stream results 
from summing up the discharge of the individual' sections. In prac- 
tice the work is tabulated in such a way as to render the computation 
very simple. 1 

Current-meter measurements are not practicable where there are 
eddies, cross currents, swirls, or passages for the water underneath 
stones. It is usually possible, however, to improve the channel by 
removing bowlders and rocks, so that a satisfactory measuring 
section may be obtained, even on rough, steep streams such as exist 
in Hawaii. 

Three kinds of velocity-area gaging stations are in general use in 
Hawaii, according to the means provided for making the observations 
of depth and velocity. They are wading, bridge, and cable stations. 

A wading station is one at which measurements are made only 
by wading — that is, no means exist for getting above the water at 
any stage except by wading. Such stations are usually on ditches 
or wide, shallow streams, which do not fluctuate greatly in flow. 
Frequently, however, measurements are made at low stages by wading, 
even though other means exist for making measurements at higher 
stages. 

A bridge station is one at which the meter is used from a bridge. 
In some places highway or other bridges are available from which 
to make measurements, but generally they are not at the right place 
on the stream. Special bridges are then built. 

A cable station is one at which measurements are made from a 
cable spanning the stream. Cable stations are used on large streams, 
such as Hanapepe, Wailua, and Hanalei rivers on the island of Kauai, 
and Wailuku Kiver on the island of Hawaii. The cable supports the 
car from which a man works above the water. Distances are marked 
off on the cable itself or on a small auxiliary cable stretched taut 
above it. 

A suitable place for a gaging station having been selected, a staff 
gage is set in the edge of the stream, either vertical or inclined, but 
graduated into tenths, half tenths, or hundredths of feet vertically. 
The gage is securely fastened to rocks or trees to prevent displace- 
ment by floods and is so placed that the zero, or reference datum, 
is well below extreme low water. The datum is also referred to a 
permanent bench mark as an additional precaution. An observer is 
then engaged to record the heights of water, morning and evening; 
the mean of the two readings being used as the mean gage height for 
the day. 

1 For a discussion of methods of computing the discharge of a stream see Engineering News, June 25, 
J9C8, 



16 WATER RESOURCES OF HAWAII, 1912. 

Owing to the rapid rise and fall of most of the streams in Hawaii, 
two gage-height readings a day will not as a rule give a true mean 
for the 24 hours. For this reason, and also owing to the fact that 
many of the gaging -stations are necessarily situated in the mountains 
at points remote from all habitations and difficult of access, the use 
of automatic recording gages has been found to be generally neces- 
sary. The gages used are of various types, some requiring weekly 
visits and others operating for a month without attention. 

The essential features of automatic gages consist of a float free to 
rise and fall with fluctuations of the water surface, a means of trans- 
ferring this motion of the float to the record, either directly or through 
a reducing mechanism, the recording device, and the clock. In most 
gages used on natural streams the float is connected with a counter- 
weight by means of a chain or perforated tape which passes over a 
sprocket wheel connected with gearing in such a way as to reduce the 
motion caused by the rise and fall of the water surface to a convenient 
scale. This vertical motion from the float may be transferred either 
to the pencil or other recording device or to the cylinder carrying the 
paper. The time interval is given by the clock, which may move 
either the paper or the pencil, according to the float connection. For 
all autographic records the motions controlled by the float and the 
clock are brought at right angles so that there results a continuous 
curve where one set of ordinates represents gage heights, and the other 
the time interval. 

The gage may be designed to accommodate any range of stage. 
Those used by the United States Geological Survey in Hawaii are 
designed for variations of 5, 10, 20, 30, and 36 feet, but so far those 
having a 20-foot range have been found to be sufficient for any stage. 

DEFINITION OF TERMS. 

The volume of water flowing in a stream — the "run-off" or "dis- 
charge" — is expressed in various terms, each of which has become 
associated more or less definitely with a certain class of work. These 
terms may be divided into two groups: (1) Those which represent a 
rate of flow, as "second-feet," "gallons per minute," "gallons per 24 
hours," "miner's inches," and "run-off in second-feet per square 
mile," and (2) those which represent the actual quantity of water, as 
"run-off in depth in inches," "million gallons," and "acre-feet." 
They may be defined as follows : 

"Second-foot" is an abbreviation for cubic foot per second and is 
the unit for the rate of discharge of water flowing in a stream 1 square 
foot in cross section at a rate of 1 foot per second. It is generally 
adopted as the fundamental unit in the measurement of flowing water 
and is the "natural" unit, as the foot and the second are the units 



DEFINITION OF TERMS. 17 

used in making the physical determinations. Other units may be 
computed from this by the use of factors given in the table of equiv- 
alents. 

"Gallons per minute " is generally used in connection with pumping 
and city water supply, the United States gallon of 231 cubic inches 
being the unit of quantity and 1 minute the unit of time. 

The "miner's inch" is the unit for the rate of discharge of water 
that passes through an orifice 1 inch square under a head which varies 
locally. It is commonly used by miners and irrigators throughout the 
West, and is defined by statute in each State in which it is used. 

"Second-feet per square mile" is the average number of cubic feet 
of water flowing per second from each square mile of area drained, on 
the assumption that the run-off is distributed uniformly both as re- 
gards time and area. 

"Run-off in inches" is the depth to which the drainage area would 
be covered if all the water flowing from it in a given period were con- 
served and uniformly distributed on the surface. It is used for com- 
paring run-off with rainfall, which is usually expressed in depth in 
inches. 

An "acre-foot" is equivalent to 43,560 cubic feet and is the quantity 
required to cover an acre to the depth of 1 foot. The term is com- 
monly used in connection with storage for irrigation. 

In the Territory of Hawaii a unit commonly used in connection with 
the measurement of water is the ' ' million gallons. " This is used with 
two meanings — (1) to indicate a rate of flow and (2) to express an 
actual quantity of water. In the former sense "million gallons per 24 
hours" is inferred, 1,000,000 gallons being taken as the unit of quan- 
tity, and 24 hours as the unit of time. With this meaning the term is 
generally used in connection with pumping and irrigation. In the 
latter sense "million gallons" as an absolute quantity is used in the 
measurement of storage capacities of reservoirs. 

The following convenient approximate relations exist between 
second-feet, million gallons per 24 hours, and acre-feet: 1 second- 
foot flowing 24 hours equals about 2 acre-feet; 1,000,000 gallons 
equals about 3 acre-feet; and 1 second-foot equals approximately 
two-thirds million gallons per 24 hours. 

"Man's water" is an irrigator's term also in common use in Hawaii. 
It signifies the amount of water that one irrigator can properly handle 
in the field. It varies greatly, being dependent upon the condition of 
the furrows, the age of the crop, and the skill and individuality of the 
irrigator. Some measurements indicate that it is about 0.75 second- 
foot. It may be almost any quantity under 1 second-foot, 

14694°— wsp 336—14 2 



18 



WATER RESOURCES OF HAWAII, 1912. 



CONVENIENT EQUIVALENTS. 

The following is a list of convenient equivalents for use in hydraulic 
computations: 

Table for converting discharge in second-feet into run-off in acre-feet. 



Discharge 
(second- 


Run-off (acre-feet). 












feet). 


1 day. 


28 days. 


29 days. 


30 days. 


31 days. 


1 


1.983 


55.54 


57.52 


59. 50 


61.49 


2 


3.967 


111.1 


115.0 


119.0 


123.0 


3 


5.950 


166.6 


172.6 


178.5 


184.5 


4 


7.934 


222.1 


230. 1 


238. 


246.0 


5 


9.917 


277.7 


287.6 


297.5 


307.4 


6 


11.90 


333.2 


345.1 


357.0 


368.9 


7 


13.88 


388.8 


402.6 


416.5 


430.4 


8 


15.87 


444.3 


460.2 


476.0 


491.9 


9 


17.85 


499.8 


517.7 


535.5 


553.4 



Note.— For partial month multiply values for one day by the number of days. 

1 second-foot equals 7.48 United States gallons per second; equals 448.8 gallons per 

minute; equals 646,272 gallons for one day. 

1 second-foot for one year covers 1 square mile 1.131 feet or 13.572 inches deep. 

1 second-foot for one year equals 31,536,000 cubic feet. 

1 second-foot equals about 1 acre-inch per hour. _ 

1 second-foot for one day covers 1 square mile 0.03719 inch deep. 

1 second-foot for one day equals 1.983 acre-feet. • 

1,000,000 United States gallons per day equals 1.55 second-feet. 

1,000,000 United States gallons equals 3.07 acre-feet. 

1,000,000 cubic feet equals 22.95 acre-feet. 

1 acre-foot equals 325,850 gallons. 

1 inch deep on 1 square mile equals 2,323,200 cubic feet. 

1 inch deep on 1 square mile equals 0.0737 second-foot per year. 

1 foot equals 0.3048 meter. 

1 mile equals 1.60935 kilometers. 

1 mile equals 5,280 feet. 

1 acre equals 0.4047 hectare. 

1 acre equals 43,560 square feet. 

1 acre equals 209 feet square, nearly. 

1 square mile equals 2.59 square kilometers. 

1 cubic foot equals 0.0283 cubic meter. 

1 cubic foot equals 7.48 gallons. 

1 cubic foot of water weighs 62.5 pounds. 

1 cubic meter per minute equals 0.5886 second-foot. 

1 horsepower equals 550 foot-pounds per second. 

1 horsepower equals 76.0 kilogram-meters per second. 

1 horsepower equals 746 watts. 

1 horsepower equals 1 second-foot falling 8.80 feet. 

1J horsepower equals about 1 kilowatt. 

m , , .„ Sec.-ft.Xfallinfeet 

To calculate water power quickly: yr =net horsepower on water 

wheel realizing 80 per cent of theoretical power. 



WATER RESOURCES OF HAWAII, 1912. 19 

OFFICE METHODS OF COMPUTING AND STUDYING 
DISCHARGE AND RUN- OFF. 

At the end of each year the field or base data for current-meter 
gaging stations, consisting of daily gage heights, discharge measure- 
ments, and notes from observers ' books are assembled. The measure- 
ments are plotted on cross-section paper and rating curves are drawn 
wherever feasible. The rating tables prepared from these curves are 
then applied to the tables of daily gage heights to obtain the daily 
discharge, and from these applications the tables of monthly dis- 
charge and run-off are computed. 

Eating curves are drawn and studied with special reference to the 
class of channels which they represent. The discharge measure- 
ments for all classes of stations, when plotted with gage heights in 
feet as ordinates and discharges in second-feet as abscissas, define 
rating curves which are generally more or less parabolic in form. 
For many stations curves of area in square feet and mean velocity 
in feet per second are also constructed to the same scale of ordinates 
as the discharge curve. These are used mainly to extend the dis- 
charge curves beyond the limits of the plotted discharge measure- 
ments, to check the form of the discharge curve, and to determine 
and eliminate erroneous measurements. 

For every rating table the following assumptions are made for the 
period of application of the table: (a) That the discharge is a func- 
tion of and increases gradually with the stage; (b) that the discharge 
is the same whenever the stream is at a given stage, and hence such 
changes in conditions of flow as may have occurred during the period 
of application are either compensating or negligible, except that the 
rating, as stated in the footnote of each table, is not applicable for 
periods during which the channel was obstructed; (c) that the in- 
creased and decreased discharge due to change of slope on rising and 
falling stages is either negligible or compensating. 

As already stated, the gaging stations may be divided into several 
classes, as indicated in the following paragraphs: 

The stations of class 1 represent the most favorable conditions for 
an accurate rating and are also the most economical to maintain. 
The bed of the stream is usually composed of rock and is not subject 
to the deposit of sediment and loose material. This class includes 
also many stations located in a pool below which is a permanent 
rocky riffle that controls the flow Hke a weir. Provided the control 
is sufficiently high and close to the gage to prevent cut and fill at the 
gaging point from materially affecting the slope of the water surface, 
the gage height will for all practical purposes be a true index of the 
discharge. Discharge measurements made at such stations usually 



20 WATER RESOURCES OF HAWAII, 1912. 

plot within 2 or 3 per cent of the mean discharge curve, and the 
rating developed from that curve represents a very high degree of 
accuracy. 

Class 2 comprises mainly stations on rough, mountainous streams 
with steep slopes. The beds of such streams are, as a rule, com- 
paratively permanent during low and medium stages, and when the 
flow is sufficiently well defined by an adequate number of discharge 
measurements before and after each flood the stations of this class 
give nearly as good results as those of class 1. As it is seldom 
possible to make measurements covering the time of change at 
flood stage, the assumption is often made that the curves before 
and after the flood converged to a common point at the highest 
gage height recorded during the flood. Hence the only uncertain 
period occurs during the few days of highest gage heights covering 
the period of actual change in conditions of flow. 

Class 3 includes those stations where the stream bed is of a shifting 
character, or the controlling section below the gage frequently 
changes owing to cutting out by the current and the filling in of sand, 
gravel, and drift. In some cases in Hawaii changes are caused by 
the growth of vegetation in the stream bed. No absolute rule 
can be laid down for stations of this class. Each rating curve must 
be constructed mainly on the basis of the measurements of the cur- 
rent year, the engineer being guided largely by the history of the 
station and the following general law: If all measurements ever made 
at a station of this class are plotted on cross-section paper, they will 
define a mean curve which may be called a standard curve. It has 
been found in practice that if after a change caused by high stage a 
relatively constant condition of flow occurs at medium and low 
stages, all measurements made after the change will plot on a smooth 
curve which is practically parallel to the standard curve with respect 
to ordinates or gage heights. This law of the parallelism of rating 
curves is the fundamental basis of all ratings and estimates at stations 
with semipermanent and shifting channels. It is not absolutely cor- 
rect, but, with few exceptions, answers all the practical requirements 
of estimates made at low and medium stages after a change at a high 
stage. This law appears to hold equally true whether the change 
occurs at the measuring section or at some controlling point below. 
The change is, of course, fundamentally due to change in the chan- 
nel caused by cut or fill, or both, at or near the measuring section. 
For all except small streams the changes in section usually occur at 
the bottom. The following simple but typical examples illustrate 
this law: 

(a) If 0.5 foot of planking were to be nailed on the bottom of a well- 
rated wooden flume of rectangular section, there would result, other 
conditions of flow being equal, new curves of discharge, area, and 



OFFICE METHODS. 21 

velocity, each plotting 0.5 foot above the original curves when 
referred to the original gage. In other words, this condition would 
be analogous to a uniform fill or cut in a river channel which either 
reduces or increases all three values of discharge, area, and velocity 
for any gage height. In practice, however, such ideal conditions 
rarely exist. 

(b) In the case of a cut or fill at the measuring section, there is a 
marked tendency toward decrease or increase, respectively, of the 
velocity. In other words, the velocity has a compensating effect, and 
if the compensation is exact at all stages the discharge at a given 
stage will be the same under both the new and the old conditions. 

(c) In the case of uniform change along the crest of a weir or 
rocky control, the area curve will remain the same as before the 
change, and it can be shown that here again the change in velocity 
curve is such that it will produce a new discharge curve essentially 
parallel to the original discharge curve with respect to their ordinates. 

Of course, in actual practice such simple changes of section do not 
occur. The changes are complicated and lack uniformity, a cut at 
one place being largely offset by a fill at another, and vice versa. 
If these changes are very radical and involve large percentages of 
the total area — as, for example, on small streams — there may result 
a wide departure from the law of parallelism of rating curves. In 
complicated changes of section the corresponding changes in velocity 
which tend to produce a new parallel discharge curve may interfere 
with each other materially, causing eddies, boils, backwater, and 
radical changes in slope. In such extreme conditions, however, the 
measuring section would more properly fall under class 4 and would 
require very frequent measurements of discharge. Special stress is 
laid on the fact that in the lack of other data to the contrary the 
utilization of this law will yield the most probable results. 

Slight changes at low or medium stages of an oscillating character 
are usually averaged by a mean curve drawn among them parallel 
to the standard curve,, and if the individual measurements do not 
vary more than 5 per cent from the rating curve the results are 
considered good for stations of this class. 

Class 4 comprises stations on streams that have soft, muddy, or 
sandy beds. Good results can be obtained from such sections only 
by frequent discharge measurements, the frequency ranging from a 
measurement every two or three weeks to a measurement every day, 
according to the rate of diurnal change in conditions of flow. These 
measurements are plotted and a mean or standard curve drawn 
among them. It is assumed that there is a different rating curve 
for every day of the year and that this rating is parallel to the stand- 
ard curve with respect to their ordinates. On the day of a measure- 
ment the rating curve for that day passes through that measurement. 



22 WATER RESOURCES OF HAWAII, 1912. 

For days between successive measurements it is assumed that the 
rate of change is uniform, and hence the ratings for the intervening 
days are equally spaced between the ratings passing through the two 
measurements. This method must be modified or abandoned 
altogether under special conditions. Personal judgment and a 
knowledge of the conditions involved can alone dictate the course 
to pursue in such cases. 

The computations have as a rule been carried to three significant 
figures. Computation machines and the 20-inch slide rule have 
been generally used. All computations are carefully checked. 

After the computations have been completed they are entered in 
tables and carefully studied and intercompared to eliminate or 
account for all gross errors so far as possible. Missing periods are 
filled in, so far as feasible, by means of comparison with records for 
adjacent streams. The attempt is made to complete years or periods 
of discharge, thus eliminating fragmentary and disjointed records. 
Full notes accompanying such estimates follow the daily and monthly 
discharge tables. 

EXPLANATION OF TABLES. 

For each regular current-meter gaging station are given in general 
the following data: Description of station, list of discharge measure- 
ments, table of daily gage height, table of daily discharge, table of 
monthly and yearly discharge, and run-off in acre-feet. For stations 
located at weirs or dams the gage-height table is omitted. 

All rates of flow are expressed as second-feet, because distances and 
depths are measured in feet, and velocities in feet per second. The 
flow is thus obtained in cubic feet per second, or more briefly in 
" second-feet." The term " million gallons per 24 hours" is not used 
except in a few tables where data have been furnished in these 
units by private corporations. "Million gallons per 24 hours" is 
not a primary but a derived unit. To convert second-feet into 
million gallons per 24 hours multiply by 0.646. 

In addition to statements regarding the location and installation 
of current-meter stations, the descriptions give information in regard 
to any conditions which may affect the constancy of the relation of 
gage height to discharge, covering such points as shifting channels and 
backwater; also information regarding diversions which decrease the 
total flow at the measuring section. Statements are also made regard- 
ing the accuracy and reliability of the data. 

The discharge-measurement table gives the results of the discharge 
measurements made during the year, including the date, name of 
hydrographer, gage height, and discharge in second-feet. 

The table of daily gage height records the daily fluctuations of the 
surface of the river as found from the mean of the gage readings taken 



EXPLANATION OF TABLES. 23 

each day. At most stations the gage is read in the morning and in 
the evening unless a continuous record is obtained by means of an 
automatic instrument. The gage height given in the table represents 
the elevation of the surface of the water above the zero of the gage. 
All gage heights affected by shifting conditions of flow or by back- 
water from obstructions are published as recorded, with suitable foot- 
notes. The rating table is not applicable for such periods unless the 
proper corrections to the gage heights are known and applied. Atten- 
tion is called to the fact that the zero of the gage is placed at an arbi- 
trary datum and has no relation to zero flow or the bottom of the river. 
In general the zero is located somewhat below the lowest known 
flow, so that negative readings shall not occur. 

The discharge measurements and gage heights are the base data 
from which rating tables, daily discharge tables, and monthly dis- 
charge tables are computed. 

The rating table gives, either directly or by interpolation, the 
discharge in second-feet corresponding to every stage of the river 
recorded during the period for which it is applicable. It is not pub- 
lished in this report, but can be determined from the daily gage 
heights and daily discharges, for the purpose of verifying the pub- 
lished results as follows: 

First plot the discharge measurements on cross-section paper with 
gage height in feet as ordinates and discharge in second-feet as 
abscissas. Then tabulate a number of gage heights taken from the 
daily gage-height table for the complete range of stage given and the 
corresponding discharges for the days selected from the daily discharge 
table and plot the values on cross-section paper. The last points 
plotted will define the rating curve used and will lie among the plotted 
discharge measurements. After drawing the rating curve, a table 
can be prepared by scaling off the discharge in second-feet for each 
tenth foot of gage height. These values should be so adjusted that 
the first differences shall always be increasing or constant, except for 
known conditions of backwater. 

The table of daily discharge gives the discharge in second-feet cor- 
responding to the observed gage height as determined from the rating 
table, the number of significant figures used varying with the size 
of the discharge. For quantities below 0.5 second-foot the daily 
discharge is carried to hundredths; from 0.5 to 9.9 second-feet, to 
tenths only; from 10 to 99 second-feet all decimals are omitted, and 
above 100 second-feet only three significant figures are used. 

In the table of monthly discharge the column headed "Maximum" 
gives the mean flow, as determined from the rating table, for the day 
when the mean gage height was highest. As the gage height is the 
mean for the day, it does not indicate correctly the stage when the 
water surface was at crest height, and the corresponding discharge 



24 WATER RESOURCES OF HAWAII, 1912. 

was consequently larger than given in the maximum column. Like- 
wise in the column of " Minimum" the quantity given is the mean 
flow for the day when the mean gage height was lowest. The column 
headed "Mean" is the average flow in cubic feet for each second dur- 
ing the month. On this the computations for the remaining columns, 
which are defined on page 17, are based. 

ACCURACY AND RELIABILITY OF FIELD DATA AND 
COMPARATIVE RESULTS. 

Practically all discharge measurements made under fair conditions 
are well within 5 per cent of the true discharge at the time of obser- 
vation. Inasmuch as the errors of meter measurements are largely 
compensating, the mean rating curve, when well defined, is much 
more accurate than the individual measurements. Numerous tests 
and experiments have been made to test the accuracy of current- 
meter work. These show that it compares very favorably with the 
results from standard weirs, and, owing to simplicity of methods, 
usually gives results that are much more reliable than those from 
the ordinary weir used under conditions widely different from those 
under which the weir formula was derived. 

The work is, of course, dependent on the reliability of the observers. 
With relatively few exceptions, the observers perform their work 
honestly. Care is taken, however, to watch them closely and to 
inquire into any discrepancies. It is, of course*, obvious that one 
gage reading a day does not always give the mean height for that 
day. As an almost invariable rule, however, errors from this source 
are compensating and virtually negligible in a period of one month, 
although a single day's reading may, when taken by itself, be con- 
siderably in error. 

In order to give engineers and others information regarding the 
probable accuracy of the computed results, footnotes are added to the 
daily discharge tables, stating the probable accuracy of the rating 
tables used, and an accuracy column is inserted in the monthly dis- 
charge table. For the rating tables "well defined" indicates in gen- 
eral that the rating is probably accurate within 5 per cent; " fairly 
well defined," within 10 per cent; "poorly defined" or "approxi- 
mate," within 15 to 25 per cent. These notes are very general and 
are based on the plotting of the individual measurements with refer- 
ence to the mean rating curve. 

DIVISION OF WORK. 

On account of the isolation of the different islands of the Territory 
an engineer or employee was assigned to take charge of the field work 
on each one of the four larger islands with temporary headquarters on 
that island. 



GAGING STATIONS. 

Persons in charge of field work. 



25 



Island. 


In charge. 


Temporary headquarters. 


Oahu 


W. F. Martin, district engineer (Jan. 1 to Mar. 27) 

C. H. Pierce, acting district engineer (Mar. 28 to 

Aug. 13). 
G. K. Larrison, district engineer (Aug. 14 to 

Dec. 31). 
W. V. Hardy, field assistant 


Honolulu (permanent). 




Waimea. 


Maui 


J. B. Stewart, clerk acting field assistant (Jan. 1 to 

Nov. 30). 
C. T. Bailey, assistant engineer (Dec. 1-31) 


Wailuku. 


Hawaii 


C. H. Pierce, assistant engineer (Jan. 1 to Mar. 27) 

E. 0. Christiansen, assistant engineer (July 10 to 
Dec. 31). 


Hilo. 



Office Engineer J. C. Dort, junior engineer, at Honolulu, October 
29 to December 31, assisted on Oahu field work. 

Ratings, applications, computations, etc., were made by G. K. 
Larrison, J. C. Dort, E. O. Christiansen, C. T. Bailey, W. V. Hardy, 
E. E. Goo, G. R. White, S. W. Dort, R. M. S. Goo, H. L. Book, H. H. 
Kennedy, H. M. Kennedy, and E. J. Howard. The report was edited 
by Mrs. B. D. Wood. 

GAGING STATIONS MAINTAINED IN HAWAII. 

The following list comprises the gaging stations maintained in 
Hawaii by the United States Geological Survey and cooperative 
parties. The stations are arranged by stream basins and appear in 
systematic order for the several islands, tributaries of main streams 
being indicated by indention. The date refers to the years or parts 
of years for which records are available. A dash following the date 
indicates that the station was being maintained December 31, 1912. 

KAUAI ISLAND. 

Waimea River near Waimea, 1910- 
Poomau River: 

Kawaikoi Stream near Waimea, 1909- 

Waiakoali Stream near Waimea, 1909- 
Mohihi Stream near Waimea, 1909- 
Waialae Stream near Waimea, 1910- 
Kekaha ditch at camp No. 1, near Waimea, 1910- 
Kekaha ditch at flume No. 2, near Waimea, 1910- 
Kekaha ditch at siphon, near Waimea, 1910- 
Kekaha ditch at tunnel No. 12 weir, near Waimea, 1910- 
Waimea ditch near Waimea, 1911- 
Kamenehune ditch near Waimea, 1911- 
Makaweli River near Waimea, 1911- 
Mokuone River: 

Halekua Stream near Waimea, 1912- 
Olokele River: 

Olokele ditch at tunnel No. 12, near Makaweli, 1910- 
Olokele ditch near Waimea, 1912- 
Poowaiomahaihai ditch near Waimea, 1911- 



26 WATER RESOURCES OF HAWAII, 1912. 

Hanapepe River at Hanapepe Falls, near Eleele, 1911- 
Hanapepe River at Kaula, near Eleele, 1910- 

Hanapepe ditch at Hanapepe Falls, near Eleele, 1911- 
Hanapepe ditch at Koula, near Eleele, 1910- 
Hanapepe ditch at weir, near Hanapepe, 1910- 

East Branch of Hanapepe River at Hanapepe Falls, near Eleele, 1911- 
Hiloa ditch at Hanapepe Falls, near Eleele, 1911- 
Huleia River, near Lihue, 1912- 
Hanamaula River at Kapaia near Lihue, 1911- 
Wailua River: 

South Fork of Wailua River at siphon, near Lihue, 1910-11. 
South Fork of Wailua River above Waiehu Falls, near Lihue, 1911- 
Lihue ditch near Lihue, 1910- 
Hanamaulu ditch near Lihue, 1910- 
North Fork of Wailua River near Lihue, 1910- 

East Branch of North Fork of Wailua River near Lihue, 1912- 
Uhau Iole Stream at 750-foot elevation, near Lihue, 1912- 
Keahua Stream at 750-foot elevation, near Lihue, 1912- 
Kawi Stream at 750-foot elevation, near Lihue, 1912- 
Kanaha ditch near Lihue, 1910- 
Konohiki Stream at Makakualele (mauka) weir, near Kapaa, 1911- 
Konohiki Stream at Makakualele (makai) weir, near Kapaa, 1912- 
Kaehulua Stream at Kainahola (mule stable) weir, near Kapaa, 1911- 
North Fork of Kaehulua Stream at Kuhinoa weir, near Kapaa, 1911- 
South Fork of Kaehulua Stream at Wainamuamu weir, near Kapaa, 1911- 
Kapaa River, at Kapahi, near Kapaa, 1910- 
Akulikuli Springs near Kapaa, 1909- 
Kapahi ditch at Kapahi, near Kapaa, 1909- 

Tunnel ditch at Kapahi, near Kapaa, 1909-11. 
Kapaa ditch at Kapahi, near Kapaa, 1909-11. 
Pipe ditch at Kapahi, near Kapaa, 1909-11. 
Kealia Stream: 

Kaneha ditch at weir near Kealia, 1909- 
Anahola River at 1,140-foot elevation, near Kealia, 1912- 
Anahola River above dam at Kiokala, near Kealia, 1910- 
Anahola River at Kiokala dam, near Kealia, 1910-11. 
Anahola ditch at Kiokala, near Kealia, 1909- 
Anahola ditch at makai weir, near Kealia, 1909-11. 
Kalihiwai River near Kilauea, 1912- 
Hanalei River near Hanalei, 1911- 
China ditch near Hanalei, 1911- 
Kuna ditch near Hanalei, 1912- 
Lumahai River near Wainiha, 1912- 
Wainiha River near Wainiha, 1911- 

Wainiha canal at intake, near Wainiha, 1910- 
Wainiha canal at tunnel No. 18, near Wainiha, 1911. 
Wainiha canal at tailrace, near Wainiha, 1911. 

OAHTT ISLAND. 

Palolo Stream: 

Waiomao Stream at 900-foot evelation, near Honolulu, 1911- 
Waiomao Stream above Pukele Stream, near Honolulu, 1911- 
Pukele Stream at Mahoe Springs, near Honolulu, 1912- 

Manoa Stream at upper end of valley, near Honolulu, 1910- 



GAGING STATIONS. 27 



Manoa Stream at College of Hawaii, near Honolulu, 1909-10; 1912- 

Manoa Stream at Waialae Road, near Honolulu, 1910-12. 

Pauoa Stream below Kahuawai Springs, near Honolulu, 1911- 

Kahuawai Spring, near Honolulu, 1912- 

Nuuanu Stream at Kuakini Street, Honolulu, 1911-12. 

Lulumaho ditch in Nuuanu Valley, near Honolulu, 1911- 
Luakaha weir in Nuuanu Valley, near Honolulu, 1910- 
Kaukonahua Stream: 

South Fork of Kaukonahua Stream, near Wahiawa, 1911. 
North Fork of Kaukonahua Stream, near Wahiawa, 1911. 
Wahiawa Reservoir ditch, near Wahiawa, 1910-11. 
Kaipapau Stream, near Hauula, 1906-7. 
Kaluanui Stream near Hauula, 1906-7. 
Punaluu Stream, near Hauula, 1906-7. 

Waikane Stream at lower Waikane Valley, near Waikane, 1912. 
Waiahole Stream at Manianiaula, near Waikane, 1911- 
Waiahole Stream at Waiahole, near Waikane, 1911- 
Waihi Stream, near Waikane, 1911. 
Halona Stream, near Waikane, 1911. 
Waianu Stream, near Waikane, 1911. 
Kahanaiki Stream near Waimanalo, 1912- 
Kailua Stream near Waimanalo, 1912- 
Pohakea Stream near Waimanalo, 1912- 
Kamakalepo Stream near Waimanalo, 1912- 
Kaimi Stream near Waimanalo, 1912- 
Makawao Stream near Waimanalo, 1912- 
Makawao ditch near Waimanalo, 1912- 
Wong Leong ditch near Waimanalo, 1912- 
Waimanalo ditch below reservoir, near Waimanalo, 1912- 
Pump ditch near Waimanalo, 1912- 

MATJI ISLAND. 
West Maui. 

Kahakuloa Stream at Kahakuloa, near Waihee, 1912- 
Waihee Stream near Waihee, 1910- 

Waihee canal near Waihee, 1910- 

Waihee canal at weir near Wailuku, 1911- 

Spreckels ditch near Waihee, 1910- 

Spreckels ditch at Waiale weir, near Wailuku, 1910-11. 
Waiehu Stream: 

North Waiehu Stream near Wailuku, 1911- 

North Waiehu ditch near Wailuku, 1910-11. 

South Waiehu Stream near Wailuku, 1910- 
Iao Stream near Wailuku, 1910- 

Maniania ditch near Wailuku, 1910- 
Waikapu Stream near Waikapu, 1910- 

South Side Waikapu ditch near Waikapu, 1910- 

Palolo (Everett) ditch near Waikapu, 1910- . 
Ukumehame Stream near Olowalu, 1911- 
Olowalu Stream: 

Olowalu ditch No. 1 near Olowalu, 1911- 
Launiupoko Stream near Lahaina, 1911- 



28 WATER RESOURCES OF HAWAII, 1912. 

Kauaula Stream near Lahaina, 1911- 

Kauaula ditch near Lahaina, 1911- 

Kauaula weir No. 1 near Lahaina, 1901. 

Kauaula weir No. 2 near Lahaina, 1901. 

Kauaula weir No. 3 near Lahaina, 1901. 
Lahainaluna Stream near Lahaina, 1911- 

Lahainaluna weir No. 1 near Lahaina, 1901. 

Lahainaluna weir No. 2 near Lahaina, 1901. 
Kahoma Stream near Lahaina, 1911- 

Kahoma Stream at weir No. 1, near Lahaina, 1901. 

Kahoma Stream at weir No. 2, near Lahaina, 1901. 

Kahoma ditch at weir near Lahaina, 1911-* 
Honokawai Stream near Lahaina, 1911. 

Honokawai ditch near Lahaina, 1912- 

Honokawai weir No. 1 near Lahaina, 1901. 
Honolua Stream near Honokahau, 1911. 

Honolua ditch near Honokahau, 1911- 
Honokahau Stream near Honokahau, 1911. 

Honokahau ditch at intake, near Honokahau, 1907- 

Honokahau ditch above Honolua Stream, near Honokahau, 1910-11. 

IJonokahau ditch at Honokawai weir, near Lahaina, 1910- 

East Maui. 
Koolau ditch region: 

Koolau ditch near Keanae, 1910- 

Koolau ditch at Alo division weir, near Huelo, 1908-1911. 
Spreckels ditch region: 

Haipuaena Stream near Huelo, 1910- 

Puohakamoa Stream near Huelo, 1910- 

Alo Stream near Huelo, 1910- 

Waikamoi Stream near Huelo, 1910- 

Oopuola Stream near Huelo, 1910- 

Spreckels ditch at station No. 1, near Huelo, 1910- 

Spreckels ditch at atstion No. 2, near Huelo, 1911- 

Spreckels ditch at station No. 3, near Huelo, 1910- 

Spreckels ditch at station No. 4, near Huelo, 1910- 

Spreckels ditch at station No. 5, near Huelo, 1911- 

Spreckels ditch at station No. 6, near Huelo, 1911- 

Spreckels ditch at station No. 7, near Huelo, 1911- 

Spreckels ditch at station No. 8, near Huelo, 191.1- 
Center ditch region: 

Center ditch near Huelo, 1910- 
Hamakua ditch region: 

Nailiilihaele Stream near Huelo, 1910- 

Kailua Stream near Huelo, 1910- 

Oanui Stream near Huelo, 1910-11. 

Hoolawaliilii Stream near Huelo, 1910- 

Hoolawanui Stream near Huelo, 1910- 

Honopou Stream near Huelo, 1910- 

Halehaku Stream at dam, near Huelo, 1910-11. 
Halehaku Stream weir near Huelo, 1910- 

Opana Stream near Huelo, 1910- 
Opana ditch near Huelo, 1910- 

New Hamakua ditch at Nailiilihaele weir, near Hueio, 1910- 



GEOGRAPHY OF THE HAWAIIAN ISLANDS. 29 

Hamakua ditch region — Continued. 

New Hamakua ditch at Halehaku weir, near Huelo, 1910- 
New Hamakua ditch at station No. 1, near Huelo, 1912- 
New Hamakua ditch at station No. 2, near Huelo, 1912- 
New Hamakua ditch at station No. 3, near Huelo, 1912- 
New Hamakua ditch at station No. 4, near Huelo, 1912- 
New Hamakua ditch at station No. 5, near Huelo, 1912- 
Old Hamakua ditch at Opana weir, near Huelo, 1910- 
Kaluanui ditch at Puuomalei near Hamakuapoko, 1910- 
Lowrie ditch at Opana weir, near Huelo, 1910- 
Haiku ditch at Peahi weir, near Huelo, 1910- 

„., HAWAII ISLAND. 

Hilo group: 

Wailuku River near Hilo, 1911- 
Honolii River at Kaiwiki, near Hilo, 1911- 
Honolii ditch at Kaiwiki, near Hilo, 1911. 
Kawainui River at Kawainui, near Pepeekeo, 1911- 
4 stations at Piihonua, near Hilo, 1912. 
81 stations at 2,700 feet level, in forest back of Hilo, 1911- 
Hamakua group: 

Kawainui Branch of Waipio River, near Waipio, 1911- 
Waipio River below Koiawe Stream, near Waipio, 1911- 
Waipio River below Waima Stream, near Waipio, 1911- 
Waipio River at 360 feet elevation, near Waipio, 1901-2. 
New Hamakua ditch at Waima Stream, near Waipio, 1912- 
New Hamakua ditch at main weir near Kukiuhaele, 1911- 
Kawainui Stream at 2,120 feet elevation, near Waipio, 1901-2. 
Kawainui Stream at 1,435 feet elevation, near Waipio, 1901-2. 
Kawainui Stream at 775 feet elevation, near Waipio, 1901-2. 

Branch No. 3 of Kawainui Stream at 1,700 feet elevation, near Waipio, 1901-2. 

Branch No. 2 of Kawainui Stream at 1,405 feet elevation, near Waipio, 1901-2. 

Branch No. 1 of Kawainui Stream at 1,380 feet elevation, near Waipio, 1901-2. 
Alakahi Stream at 1,200 feet elevation, near Waipio, 1901-2. 
Alakahi Stream at 730 feet elevation, near Waipio, 1901-2. 
Koiawe Stream at 1,120 feet elevation, near Waipio, 1901-2. 
Koiawe Stream at 610 feet elevation, near Waipio, 1901-2. 
Waima Stream at 790 feet elevation, near Waipio, 1901-2. 
Waima Stream at 385 feet elevation, near Waipio, 1901-2. j 

Kohala group: 

Honokane Stream: ■' '_ 

East Branch of Honokane Stream at 1,300 feet elevation, near Honokane, 1901. 

East Branch of Honokane Stream at 770 feet elevation, near Honokane, 1901. 

West Branch of Honokane Stream at 1,370 feet elevation, near Honokane, 1901. 

West Branch of Honokane Stream at 775 feet elevation, near Honokane, 1901. 

Kohala ditch near Kohala, 1907- 

GEOGRAPHY OF THE HAWAIIAN ISLANDS. 1 

The Hawaiian Islands are situated in the north Pacific Ocean due 
west of the central part of Mexico and about 2,100 miles southwest 
of San Francisco j from which Honolulu may be- reached in about 6 
days. Dutton 2 has described the group as consisting of 12 islands — 

Adapted from Dutton, C. E., Hawaiian volcanoes: V. S. GeoL Survey Tourth Ann. Rept., pp. 
81-212, 1884. 
8 Op. cit., p. 81. 



30 WATER RESOURCES OF HAWAII, 1912. 

eight inhabited and four mere barren rocks — lying between meridians 
154° 30' and 160° 30' west of Greenwich and between parallels 18° 40' 
and 22° 15' north; but northwest of this principal part of the group 
are a dozen smaller low islands and reefs which are shown on the 
charts and over which the Territorial government has authority. 
The westernmost of these, which are known as the Ocean Islands, lie 
about in longitude 178° 30' west — very nearly the antipodes of 
Greenwich — and 29° north. The archipelago, therefore, extends 
over nearly 25° of longitude, or about 1,800 miles/ its form being 
rudely crescentic and its general trend northwest-southeast. Hitch- 
cock * gives the following list of the islands in order from west to east 
with areas and extreme altitudes. 

Islands of the Hawaiian Archipelago. 

Low islands and reefs. 2 

Altitude 
(feet). 

Ocean Islands — 10 

Midway Islands 57 

Gambia Shoal. 

Pearl and Hermes reefs. 

Lisiansky Island ... 50 

Laysan Island 25 

Maro Reef. 
Dowsett's Reef. 

The lowest of the high islands. 

Gardiner Island 170 

French Frigate Shoal 120 

Necker Island 300 

Frost Shoal. 

Nihoa or Bird Island 903 

High inhabited islands, with area and highest point. 

Niihau (97 square miles) 1, 300 

Cinder cones adjoining, named Kaula and Lehua. 

Kauai (547 square miles; highest point, Waialeale) 3 5, 170 

Oahu (598 square miles; highest point, Kaala) 4, 030 

Molokai (261 square miles; highest point, Komokoa) 4, 958 

Lanai (139 square miles) 3, 400 

Maui (728 square miles; highest point, Haleakala) 3 10, 350 

Kahoolawe (69 square miles; highest point, Moaulu Hill) 1, 472 

Hawaii (4,015 square miles; highest point, Mauna Kea) 13, 825 

Of these, Hawaii, Maui, Oahu, Kauai, and Molokai are by far the 
most important in area and in number of inhabitants. 

All these islands are volcanic. No rocks other than volcanic are 
found on any of them except a few remnants of raised sea beaches 

1 Hitchcock, C. H., Hawaii and its volcanoes, p. 1, Honolulu, 1909. . . 

2 May be swept by storm waves. 

3 Hitchcock's figures, 5,250 and 10,032, revised from more recent maps. 



GEOGRAPHY OF THE HAWAIIAN ISLANDS. 31 

composed of consolidated coral sands. All the larger ones are very- 
mountainous and lofty. The culminating points of the island of 
Hawaii are Mauna Kea, 13,825 feet, and Mauna Loa, 13,675 feet 
above sea level. The summit of Haleakala, on East Maui, is 10,350 
feet, and the mountains of West Maui attain 5,900 feet. Oahu has 
a peak on the eastern side of the island 3,100 feet high, and another on 
the western side 4,030 feet high. The loftiest point of Kauai is about 
5,170 feet above the sea. Deep-sea soundings in the vicinity have 
disclosed the fact that these volcanic piles are only the summits of 
gigantic mountain masses rising abruptly from the bottom of the 
Pacific, which for many hundreds of miles around them is only 
moderately diversified. The slopes of Mauna Loa east, west, and 
south descend beneath the surface of the ocean with a gradient fully 
equal to if not greater than the visible slope of its flanks. The sub- 
marine slopes of all the other islands in directions perpendicular to- 
the principal axis of the group are equally great and possibly some-. 
what greater. The depths attained by these continuous slopes 
within 30 to 50 miles of the shores vary from 2,400 to 3,100 fathoms, 
or 14,000 to 19,000 feet. Mauna Loa and Mauna Kea, referred to 
their true bases at the bottom of the Pacific, are therefore mountains 
not far from 30,000 feet in height. In general the island group con- 
sists of the summits of a gigantic submarine mountain chain, pro- 
jecting its loftier peaks and domes above the water. 

On the island of Hawaii the volcanic forces are still in operation. 
On the eastern portion of Maui they have rested at a very recent 
epoch. In the other islands they have long been extinct, and the 
piles they built up have been greatly ravaged by erosion. On 
Hawaii the large volcano Hualalai, just west of Mauna Loa, gave 
forth three eruptions in the early part of the present century, but 
has been dormant since 1811. Mauna Kea gives evidence of having 
reposed for many centuries — or throughout a period that, histo- 
rically considered, may have lasted some thousands of years; though, 
if we value time by the geologic scale, the date of its last activity 
would be regarded as very recent. Haleakala, on Maui, gives 
indications of considerably greater recency in its last eruptions 
than Mauna Kea, but the natives have no traditions of any out- 
break from it, and we may infer that it has been quiet for several 
hundred years. With regard to the other volcanic centers, we have 
no means of judging the antiquity of their final action except the prog- 
ress made by erosion in demolishing them, and this progress is, in every 
instance, considerable. It is most conspicuous on Kauai and Oahu, 
and almost equally so on Molokai and West Maui. From this it is 
inferred that the western islands of the group have longest enjoyed 
immunity from eruption. Kauai, especially, is frequently spoken of 



32 WATER RESOURCES OF HAWAII, 1912. 

as the oldest island of the group, and, judging from the amount of 
destruction wrought upon it by the eroding forces, the statement 
is in some measure apparently justified, but only to this extent, the 
period which has elapsed since the cessation of eruption has probably 
been longer there than in the other islands. It does not follow, 
however, that the eruptions began there any earlier than on Hawaii. 

The one continuously active volcanic vent of the islands is Kilauea, 
far down on the eastern flank of Mauna Loa — "the great mountain.' ' 
No other volcano in the world approaches Mauna Loa in the vastness 
of its mass or in the magnitude of its eruptive activity. There are 
many volcanic peaks higher in the air, but most of them are planted 
upon elevated platforms, where they appear as mere cones of greater 
or less size. We do not know at what level the base of Mauna Loa is 
situated. We only know that it is below sea level, and probably far 
below it. But on the other hand, it may not be so low as the adjoin- 
ing depths of the Pacific. 

Mauna Kea — "the white mountain" — is also a colossus among 
volcanoes. The summit of Mauna Kea is a trifle higher than that 
of Mauna Loa, but its slopes are steeper and its base is therefore 
much smaller. The magnitude of Mauna Loa is due chiefly to the 
great area of its base, which is nearly elliptical in shape, with a major 
diameter of 74 miles and a minor of 53 miles, measured at sea level. 

In the aggregate of its eruptions Mauna Loa is also unrivalled. 
Some of the volcanoes of Iceland have been known to disgorge at a 
single outbreak masses of lava fully equal to them. But in that 
island such intravasations are infrequent, and a century has elapsed 
since any of such magnitude have been emitted, though several of 
minor extent have been outpoured. The eruptions of Mauna Loa 
are all of great volume, and occur irregularly, with an average in- 
terval of about eight years. Taking the total quantity of material 
disgorged during the past century, no other volcano is at all com- 
parable to it. 

Mauna Loa and Kilauea are in many important respects abnormal 
volcanoes. Most notable is the singularly quiet character of their 
eruptions. Earely are these portentous events attended by any of 
that extremely explosive action which is characteristic of nearly all 
other volcanoes. Only once or twice within the historic period have 
they been accompanied by earthquakes or subterranean rumblings. 
The vast jets of steam blown miles high, hurling stones, cinders, and 
lapilli far and wide, filling the heavens with vapor and smoke, and 
hailing down ashes and fragments over the surrounding regions, have 
never been observed here. Some action of this sort is indeed repre- 
sented, but only in a feeble way. The lava wells forth like water 
from a hot, bubbling spring, but so mild are the explosive forces that 



GEOGRAPHY OF THE HAWAIIAN ISLANDS. 33 

the observer may stand to the windward of the grandest eruption, 
and so near the source that the heat will make the face tingle, yet 
without danger. Ordinarily the outbreak takes place without warn- 
ing and without the knowledge of the inhabitants, who first become 
aware of it at nightfall, when the sky is aglow and the fiery fountains 
are seen playing. As the news spreads, hundreds of people flock to 
it to witness the sublime spectacle and display almost as much eager- 
ness to approach the scene of an eruption as the people of other 
countries show to get away from one. 

The great magnitude of the individual eruptions of Mauna Loa 
and Kilauea, and the absence of fragmental products, supply an 
explanation of their abnormally flat profiles. Fragmental ejecta 
pile up around the vents from which they are projected; but great 
streams of fluent lava run far away from their sources. The large 
pits or so-called craters which are sunken in the summits Kilauea and 
Mauna Loa, and the still more remarkable one on Haleakala, are not 
entirely unparalleled, though their analogues in other regions are very 
uncommon. 

In all those portions of the islands where quiet has long prevailed 
the scenery has habitudes of extreme boldness and animation. Cliffs, 
crags, and canyons are carved in the mountains with as much sharp- 
ness and spirited detail as in the plateau country of North America. 
In West Maui and Kauai may be found walled valleys and amphi- 
theaters which almost rival Yosemite. The windward fronts of 
Oahu and Molokai stand 3,000 to 4,000 feet high, and are carved in 
a manner which is rarely surpassed by the finest sculpture in the 
valley of the Colorado. On the weather sides of Hawaii and Maui 
the gentle slopes of the mountains terminate on the ocean in walls 
a few hundred feet high, and the platforms are gashed with canyon 
valleys that are marvels of beauty. 

The climate of the islands presents considerations of very great 
interest. It is difficult to find anywhere any greater constancy of 
atmospheric conditions than those prevailing over the ocean within 
the heart of the trade- wind belt. The temperature varies but little 
from winter to summer, and the general drift of the atmosphere is 
rarely interfered with by storms and cyclones. And yet upon the 
islands themselves it may be said that there are almost as many 
climates as there are square leagues. And the differences of climatal 
condition exhibited by localities separated only half a dozen miles 
are extreme. As a general rule the windward sides are excessively 
rainy, the precipitation may exceed 400 inches in a year. The lee- 
ward sides are generally arid, but to this there are some striking 
exceptions, especially under the lee of Mauna Loa, where the rainfall 
is almost as great as on the weather side. 
14694°— wsp 336—14 3 



34 



WATER RESOURCES OF HAWAII, 1912. 



STATION RECORDS. 

ISLAND OF KAUAI. 

WAIMEA RIVER BASIN. 
WAIMEA RIVER NEAR WAIMEA, KAUAI. 

Location. — About 2 miles north of Waimea and 250 feet above ford. 
Records available. — July 9, 1910, to December 31, 1912. 
Gage. — Vertical and inclined staff read once daily; datum unchanged. 
Channel. — Bottom covered with sand and bowlders; seems fairly permanent. 
Discharge measurements. — Made from a wire suspension bridge. 
Accuracy. — Records fair. 

Discharge measurements of Waimea River near Waimea, Kauai, in 1912. 
[Hydrographer, W. V. Hardy.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 




Feet. 
5.55 
3.77 
5.07 
3.67 
4.80 
6.25 


Sec.-ft. 
178 
5.45 
87.2 
.78 
53.7 
441 


Dec. 1 


Feet. 
6.05 
5.77 
7.60 
7.10 
8.10 
4.18 


Sec.-ft. 
350 


July 13 


Do 


232 


July 14 


Dec. 2. 


1,320 
927 


Sept. 30 


Do 


Nov. 30 


Do 


1,760 
15.6 


Dec. 1 


Dec. 10 









Daily gage height, in feet, of Waimea River near Waimea. Kauai, for 1912. 
[T. Mokuahakea, observer.] 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


5.03 


3.90 


6.01 


5.30 


3.64 


3.80 


3.70 


3.80 


4.00 


3.80 


4.00 


4.34 


3.90 


6.08 


5.07 


3.75 


3.70 


3.70 


3.80 


5.30 


3.80 


3.97 


4.01 


4.01 


6.52 


4.81 


3.80 


3.65 


3.70 


3.69 


4.20 


3.80 


3.90 


3.85 


4.75 


5.25 


4.01 


3.80 


3.70 


3.70 


3.60 


3.90 


3.79 


3.83 


3.82 


4.01 


4.24 


6.03 


4.00 


3.70 


3.70 


3.60 


3.80 


3.75 


3.81 


3.80 


3.93 


5.70 


6.00 


3.80 


3.65 


3.70 


3.69 


7.40 


3.81 


3.80 


3.91 


3.70 


6.10 


6.20 


3.80 


3.62 


3.70 


3. 69 


4.90 


3.80 


3.80 


3.89 


3.70 


4.00 


6.00 


3.75 


3.60 


3.70 


3.71 


4.00 


3.70 


3.70 


3.90 


3.70 


5.80 


7.50 


3.72 


3.65 


3.75 


4.10 


3.96 


3.67 


6.30 


3.90 


3.90 


6.50 


7.00 


3.70 


3.65 


5.35 


4.00 


3.93 


3.60 


4.20 


3.90 


3.81 


6.10 


6.98 


3.70 


3.60 


4.01 


4.00 


3.85 


3.60 


3.80 


3.85 


3.80 


6.00 


5.70 


3.70 


3.60 


3.89 


3.90 


3.81 


3.60 


3.80 


3.80 


3.80 


4.90 


5.50 


3.70 


3.70 


3.85 


5.50 


3.72 


3.80 


3.70 


4.08 


3.80 


5.00 


4.91 


3.70 


3.69 


6.40 


6.20 


3.70 


3.89 


3.70 


3.88 


3.82 


4.50 


4.13 


5.70 


3.67 


4.30 


6.04 


3.70 


3.90 


3.98 


3.85 


3.89 


4.30 


5.90 


4.20 


3.60 


3.90 


4.40 


3.75 


4.40 


4.00 


3.80 


3.90 


4.10 


7.00 


3.90 


3.60 


3.90 


3.90 


3.68 


4.37 


3.99 


3.81 


3.80 


4.00 


5.00 


3.84 


3.60 


3.89 


3.90 


3.65 


4.30 


3.93 


3.80 


3.80 


3.90 


4.30 


3.75 


3.60 


3.80 


3.90 


3.60 


5.21 


3.90 


3.80 


3.81 


4.50 


4.15 


3.73 


3.65 


3.80 


3.90 


3.60 


5.02 


3.81 


3.80 


4.80 


4.30 


4.00 


3.70 


3.68 


3.90 


3.70 


3.70 


4.00 


3.80 


3.89 


6.03 


4.10 


3.80 


3.70 


3.72 


3.88 


3.80 


3.70 


6.00 


3.71 


3.81 


4.90 


4.00 


3.80 


3.80 


3.65 


3.80 


3.80 


3.70 


5.80 


3.70 


5.30 


5.80 


3.90 


3.80 


4.30 


3.63 


3.75 


4.30 


3.70. 


3.90 


3.70 


4.00 


4.22 


7.30 


3.80 


5.40 


3.90 


3.70 


3.70 


3.70 


4.81 


3.70 


3.80 


4.01 


4.50 


3.95 


3.80 


3.81 


3.70 


3.65 


3.70 


7.00 


3.70 


3.90 


5.09 


4.08 


3.90 


3.75 


3.80 


3.60 


5.80 


3.70 


5.60 


3.70 


3.80 


3.91 


3.90 


3.80 


7.50 


3.71 


3.69 


4.80 


3.70 


3.95 


3.70 


3.80 


6.20 


3.85 


3.75 


5.30 


3.90 


3.67 


3.90 


3.81 


3.90 


3.70 


3.93 




3.70 


3.75 


4.01 


3.70 


3.65 


6.20 


3.67 


4.00 


4.25 


3.88 




5.50 




3.85 




4.10 


5.60 




4.60 





Dec. 



1 

2 
3 
4 
5 

6 
7 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 

18 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



6.10 

7.73 
7.60 
5.50 
4.90 



4.50 
4.40 
4.30 
4.18 

4.00 
3.95 
3.85 
3.80 
3.75 

3.70 
3.70 
3.79 
3.85 
4.10 

6.90 
4.70 
4.87 
4.90 
5.00 

4.30 
4.10 
3.99 
3.90 
3.87 
3.85 



ISLAND OF KAUAI. 35 

Daily discharge, in second-feet, of Waimea River near Waimea, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


84 

21 
6.9 
3.2 
2.6 

2.2 
4.4 
3.9 
4.1 
4.1 

4.1 
3.2 
2.2 
9.3 
3.7 

3.2 
2.2 
2.4 
2.2 
2.2 

2.2 
3.9 
2.4 
130 
6.6 

2.2 
4.1 
2.2 
2.2 
4.8 
3.7 


4.1 

4.1 
6.9 
52 
6.9 

4.8 
1.0 
1.0 
1.0 
4.1 

2.4 
2.2 
2.2 
2.2 
2.6 

3.9 
4.1 
2.2 
2.2 
2.4 

57 
331 

68 
255 

15 

6.9 
92.6 
44 
397 


324 
350 ! 
551 
120 
16 

226 
357 

6.6 
255 
540 

357 
320 

68 

80 

30 

19 

10 
6.6 
4.1 

30 

19 

10 
6.6 
4.1 
1,070 

30 
9.3 
4.1 
3.2 
1.0 
174 


130 

89 

58 
6.9 
331 

320 

397 

320 

1,230 

850 

836 

226 

174 
69.2 
11.2 

286 
850 

80 

19 

12 

6.6 
2.2 
2.2 

2.2 
2.2 

5.4 
4.1 
2.2 
1.6 
1.6 


0.5 
1.6 
2.2 
2.2 
6.6 

2.2 
2.2 
1.6 
1.2 
1.0 

1.0 
1.0 
1.0 
1.0 
226 

14 
4.1 
3.0 
1.6 
1.4 

1.0 
1.0 
2.2 
19 
151 

2.2 
1.6 
1,230 
130 
6.9 
3.2 


2.2 
1.0 
0.6 
1.0 
1.0 

.6 
.4 
.2 
.6 
.6 

.2 

.2 

1.0 

.9 

.8 

.2 
.2 
.2 
.2 
.6 

.8 

1.2 

.6 

.4 

4.1 

2.4 
2.2 
1.1 
4.1 
1.0 


1.0 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.6 
140 

6.9 
3.9 
3.2 

489 
19 

4.1 
4.1 
3.9 
2.2 
2.2 

4.1 
3.7 
2.2 
1.6 
1.0 

1.0 
.2 
.9 
.8 
.6 
10 


2.2 

2.2 

.9 

.2 

.2 

.9 
.9 

1.1 
10 

6.6 

6.6 
4.1 

174 

397 

335 

24 
4.1 
4.1 
4.1 
4.1 

1.0 
2.2 
2.2 
19 
1.0 

.6 

255 

57 

4.1 

397 

199 


6.6 
130 
14 
4.1 
2.2 

1,150 

68 
6.6 

5.6 

4.8 

3.2 
2.4 
1.2 
1.0 
1.0 

1.6 
.8 
.6 
.2 
.2 

1.0 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 

2.4 
.8 


2.2 
2.2 
2.2 
2.1 
1.6 

2.4 

2.2 

1.0 

.8 

.2 

.2 

.2 
2.2 
3.9 
4.1 

24 

22 

19 

113 

82 

6.6 
320 
255 

4.1 
58.1 

850 

199 
5.4 
4.1 
6.6 
38 


6.6 
5.8 
4.1 
2.8 
2.4 

2.2 
2.2 
1.0 
441 
14 

2.2 
2.2 
1.0 
1.0 
6.1 

6.6 
6.4 
4.8 
4.1 
2.4 

2.2 
1.1 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
16 


357 


2 


1,430 


3 


1,310 


4 


174 


5 


68 


6 


57 


7 


30 


8 


24 


9 


19 


10 


13 


11 


6.6 


12 


5.4 


13 


3.2 




2.2 


15 


1.6 


16 


1.0 


17 


1.0 


18 


2.1 


19 


3.2 


20 


10 


21 


780 


22 


47 


23 


64 


24 


68 


25 


80 


26 


19 


27 


10 


28 


6.4 


29 


4.1 


30 


3.5 


31 


3.2 







Note.— Daily discharge determined from a rating curve well defined between 10 and 2,000 second-feet 
but owing to the rapid fluctuation of the stream the monthly means have a low accuracy. 

Monthly discharge of Waimea River near Waimea, Kauai, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu 


Maximum. 


Minimum. 


Mean. 


racy. 




130 

397 

1,070 

1,230 

1,230 

4.1 

489 

397 
1,150 

850 

441 
1,430 


2.2 

1.0 

1.0 

1.6 

' .5 

.2 

.2 

.2 

.2 

.2 

1.0 

1.0 


10.8 
47.5 

161 

211 
58.8 

1.02 
23 
62 
47.2 
65.7 
18.2 

149 


664 
2,730 
9,900 

12,600 

"3,620 
60.7 
1,410 
3,810 
2,810 
4.040 
1,080 
9,160 


C. 


February 


C. 


March 


B. 


ApriJ 


B. 


May 


C. 


June 


D. 


July 


D. 


August 


C. 


September 


D. 


October 


D. 


November 


D. 


December 


C. 






The year 


1,430 


.2 


71.4 


51,900 









KAWAIKOI STREAM NEAR WAIMEA, KAUAI. 

Location. — About 8 miles northeast of Knudsen's mountain house; reached from 

Waimea by horse trail. 
Records available.— April 3, 1909, to December 31, 1912. 
Gage. — A 34-day Barrett & Lawrence clock register; datum unchanged. 
Channel. — Practically permanent. 

Discharge measurements. — Made from a wire suspension bridge. 
Accuracy.— Records good. 



36 WATER RESOURCES OF HAWAII, 1912. 

Discharge measurements of Kawaikoi Stream near Waimea, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 2 
Aug. 7 
Oct. 6 


W. V. Hardy 


Feet. 
1.54 
1.67 
1.50 


Sec.-ft. 
3.90 


....do 


6.30 


....do 


3.42 









Daily gage height, in feet, of Kawaikoi Stream near Waimea, Kauai, for 1912. 
[United States Geological Survey, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 . ... 


1.75 
1.70 
1.79 
1.70 
1.69 

1.69 

1.73 
1.74 
1.71 

1.65 
1.62 
1.61 
1.65 
1.60 

1.65 
1.63 
1.65 
1.67 
1.64 

1.64 
1.62 
1.82 
2.05 
2.00 

2.00 
2.00 
1.90 
2.04 
2.38 
1.95 


2.49 
3.32 
2.40 
2.11 
2.11 

2.11 
2.05 
1.90 
1.95 
2.35 

2.04 

2.00 
2.00 
2.00 
2.05 

2.05 
2.42 
3.10 
2.80 
3.24 

3.59 
3.83 
2.70 
2.50 
2.90 

2.75 
2.30 
2.33 
3.40 


2.90 
2.58 
3.38 
2.70 
2.70 

2.90 
3.08 
2.42 
2.95 
3.38 

3.60 
2.95 
2.45 
2.40 
2.20 

2.10 
2.04 
1.98 
1.97 
2.56 

2.27 
2.00 
1.95 
1.94 
5.05 

3.60 
3.15 
3.08 
3.10 
3.05 
3.13 


3.00 
2.45 
2.28 
2.30 
2.60 

3.07 
3.50 
2.77 
3.57 
2.45 

2.35 
2.50 
2.70 
2.70 
2.22 

2.20 
2.70 
2.50 
2.17 
2.09 

2.00 
1.95 
1.90 
1.88 
1.92 

1.87 
1.80 
1.80 
1.80 
1.80 


1.80 
1.80 
1.80 
1.85 
1.85 

1.78 
1.80 
2.10 
1.90 
1.77 

1.70 
1.70 
1.70 
3.10 
2.63 

2.18 
2.30 
1.92 
1.80 
1.85 

1.80 
1.90 
2.80 
2.00 
2.00 

1.95 

1.95 
1.90 
1.90 
1.85 
1.80 


1.80 
1.80 
1.77 
1.87 
1.84 

1.75 
1.70 
1.70 
1.72 
1.92 

1.78 
1.70 
1.70 
1.88 
1.88 

1.85 
1.80 
1.77 
1.75 
1.70 

1.75 
1.78 
1.75 
1.78 
1.85 

1.80 
1.80 
1.70 
1.62 
1.55 


1.55 
1.58 
1.58 
1.57 
1.55 

1.52 
1.55 
1.80 
2.88 
1.98 

1.80 
1.90 
1.75 
2.00 
2.00 

2.00 
2.00 
2.00 
2.00 
2.00 

2.00 
2.00 
2.00 
2.00 
2.00 

2.00 
2.00 
2.00 
2.00 
2.00 
2.00 


2.00 
2.00 
2.00 
2.00 
2.20 

2.20 
2.20 
2.20 
2.25 
2.28 

2.25 
2.95 
5.30 
5.20 
4.65 

2.90 
2.50 
2.37 
2.30 
2.30 

2.30 
2.30 
2.30 
2.30 
2.30 

2.30 
2.30 
2.30 
2.30 
2.30 
2.30 


2.30 
2.30 
2.30 
2.30 
2.30 

2.30 
2.25 
2.02 
1.92 
1.97 

1.80 
1.70 
1.70 
1.70 
1.70 

1.70 
1.70 
1.70 
1.70 
1.70 

1.70 
1.70 
1.70 
1.70 
1.70 

1.70 
1.70 
1.70 
1.70 
1.70 


1.70 
1.70 
1.70 
1.50 
1.52 

1.54 
1.52 
1.51 
1.81 
1.80 

1.70 
1.70 






2 




3.96 


3. 




4 




3.10 


5 




6. 






7. 






8. 






9. 






10... 






11 






12 






13. 






14. 








15. . 








16 








17 








18. 








19. 








20. 








21 








22 








23 








24 








25 








26. 








27... 








28.... 








29 








30 








31. 



















Note. — Gage heights are means for 24 hours computed from Barrett & Lawrence record sheets. Clock 
stopped Sept. 12 to Oct. 3, but record showed that the water surface fluctuated not more than 0.35, the 
mean gage height for the period being estimated at 1.70. 



ISLAND OF KAUAI. 37 

Daily discharge, in second-feet, of Kawaihoi Stream near Waimea, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


8.5 
7.0 
9.7 
7.0 
6.8 

6.8 
6.8 
7.9 
8.2 
7.3 

6.0 
5.4 
5.2 
6.0 
5.0 

6.0 
5.6 
6.0 
6.4 
5.8 

5.8 

5.4 

10.8 

20.5 

18.0 

18.0 
18.0 
14.0 
20.0 
38.8 
16.0 


45.4 
127.0 
40.0 
23.5 
23.5 

23.5 
20.5 
14.0 
16.0 
37.0 

20.0 
18.0 
18.0 
18.0 
20.5 

20.5 
41.2 
99.0 
69.0 
116.0 

166.0 

202.0 

61.0 

46.0 

78.0 

65.0 
34.0 
35.8 
138.0 


78.0 
51.6 
135.0 
61.0 
61.0 

78.0 
96.8 
41.2 
83.0 
135.0 

167.0 
83.0 
43.0 
40.0 
28.0 

23.0 
20.0 
17.2 
16.8 
50.2 

32.2 

18.0 

16.0 

15.6 

438.0 

167.0 
105.0 
96.8 
99.0 
93.5 
103.0 


88.0 
43.0 
32.8 
34.0 
53.0 

95.7 
152.0 

66.6 
162.0 

43.0 

37.0 
46.0 
61.0 
61.0 
29.2 

29.2 
61.0 
46.0 
26.5 
22.5 

18.0 
16.0 
14.0 
13.2 
14.8 

12.8 
10.0 
10.0 
10.0 
10.0 


10.0 
10.0 
10.0 
12.0 
12.0 

9.4 
10.0 
23.0 
14.0 

9.1 

7.0 

7.0 

7.0 

99.0 

55.4 

27.0 
34.0 
14.8 
10.0 
12.0 

10.0 
14.0 
69.0 
18.0 
18.0 

16.0 
16.0 
14.0 
14.0 
12.0 
10.0 


10.0 
10.0 
9.1 

12.8 
11.6 

8.5 
7.0 
7.0 
7.6 
14.8 

9.4 

7.0 

7.0 

13.2 

13.2 

12.0 

10.0 

9.1 

8.5 

7.0 

8.5 
9.4 
8.5 
9.4 
12.0 

10.0 

10.0 

7.0 

5.4 

4.2 


4.2 
4.7 
4.7 
4.6 
4.2 

3.8 
4.2 
10.0 
76.2 
17.2 

10.0 
14.0 
8.5 
18.0 
18.0 

18.0 
18.0 
18.0 
18.0 
18.0 

18.0 
18.0 
18.0 
18.0 
18.0 

18.0 
18.0 
18.0 
18.0 
18.0 
18.0 


18.0 
18.0 
18.0 
18.0 
28.0 

28.0 
28.0 
28.0 
31.0 
32.8 

31.0 
83.0 
500.0 
475.0 
350.0 

78.0 
46.0 
38.2 
34.0 
34.0 

34.0 
34.0 
34.0 
34.0 
34.0 

34.0 
34.0 
34.0 
34.0 
34.0 
34.0 


34.0 
34.0 
34.0 
34.0 
34.0 

34.0 
31.0 
19.0 
14.8 
16.8 

10.0 
7.0 
7.0 
7.0 
7.0 

7.0 
7.0 
7.0 
7.0 
7.0 

7.0 
7.0 
7.0 
7.0 
7.0 

7.0 
7.0 
7.0 
7.0 
7.0 


7.0 
7.0 
7.0 
3.5 
3.8 

4.1 
3.8 
3.6 
10.4 
10.0 

7.0 
7.0 






2 




223.0 


3 




4 




99.0 


5 




6 






7 






8* 






g 






10 






11 






12 












14 
























17 
















19 
















21 








22 
















24 
















26.. 








27 








28 .. 








29 
















31 



















Monthly discharge of Kawaihoi Stream near Waimea, Kauai, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 

(total in 

acre-feet.) 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


January 


38.8 

202.0 

438.0 

162.0 

99.0 

14.8 

76.2 

500.0 

34.0 


5.0 

14.0 

15.6 

10.0 

7.0 

4.2 

3.8 

18.0 

7.0 


10.30 
67.20 
80.40 
43.90 
19.50 

9.31 
15.80 
73.90 
14.30 

6.18 


633 

3,870 

4,940 

2,610 

1,200 

554 

972 

4,540 

851 

147 


A. 


February 


A. 


Marcb 


A. 


April 


A. 


May 


A. 


June 


A. 


July 


A. 


August 


A. 


September 


B. 


October 1-12 




November 








December 2 and 4 






161. 00 


639 












The period 








21,000 















WAIAKOALI STREAM NEAR WAIMEA, KAXTAI. 

Location. — About 10 miles northeast of Knudsen's mountain house; reached from 

Waimea. 
Records available.— April 13, 1909, to December 31, 1912. 
Gage. — Vertical staff read at irregular times; datum unchanged. 
Channel. — Permanent. 
Discharge measurements. — Made from footbridge 75 feet below trail crossing; 

low- water measurements made by wading 50 feet above gage. 



38 WATEK EESOURCES OF HAWAII, 1912. 

Discharge measurements of Waiakoali Stream near Waimea, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 2 


W. V. Hardv 


Feet. 
2.31 
2.28 
2.20 


Sec.-ft. 
0.94 


Aug. 6 
Oct. 5 


do 

do 






.98 




.84 








Daily gage height, in feet, of Waiakoali Stream near Waimea, Kauai, for 1912 . 


Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug- 


Sept. 


Oct. 


Nov. 


Dec. 


1 








3.00 
2.60 






2.31 
2.31 












2 


















2.10 


4.02 


3 


















7.90 


4 
























3.98 


5 
















2.28 

2.28 
2.28 


"2. 59" 
2.48 


2.20 
2,20 






6 




















7 




















8 






















9 
























10 


























11.. 


























12 


























13 


























14 


























15 


























16 


























17 


























18 


























19 


























20 












2.35 
2.35 














21 
























22 
























23 


























24 


























25 


























26 


























27 


2.40 
2.50 
























28 
























29 
























30 
























31 
















1 
























1 









Note. — Miscellaneous gage readings. 

MOHIHI STREAM NEAR WAIMEA, KAUAI. 

Location. — About 12 miles northeast of Knudsen's mountain house; reached by 
saddle horse from Waimea 1J days' travel. 

Records available. — April 13, 1909, to December 31, 1913. 

Drainage area. — 2.20 square miles. 

Gage. — A vertical staff; datum unchanged. 

Channel. — One at gage, two at low- water measurement section; practically perma- 
nent. 

Discharge measurements. — Made from suspension bridge. 



ISLAND OF KAUAI. 39 

Discharge measurements of Mohihi Stream near Waimea, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 2 
Aug. 6 
Oct. 5 


W. V. Hardy 


Feet. 
3.68 
3.64 
3.61 


Sec.-ft. " 
1.49 


do 


1.12 


do 


.71 









The following gage readings were made: January 28, gage height, 4.0; April 2, gage 
height, 4.10; December 3, gage height, 7.10. 

WAIALAE STREAM NEAR WAIMEA, EAUAI. 

Location. — About 3 miles by trail northeast of F. Gay's mountain house; reached by 

saddle horse from Waimea in about one day's ride. 
Records available. — August 1, 1910, to December 31, 1912. 
Gage. — Barrett & Lawrence hydro-chronograph. 
Channel. — Practically permanent. 

Discharge measurements. — Made from a cable and car. 
Accuracy. — Records good. 

Discharge measurements of Waialae Stream near Waimea, Kauai, in 1912. 



Date. 



Hydrographer. 



Gage 
height. 



Dis- 
charge. 



July 5 



W. V. Hardy. 
do 



Feet. 
1.41 
1.19 



Sec.-ft. 
17. < 
5.1 



Daily gage height, in feet, of Waialae Stream near Waimea, Kauai, for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


1.18 


1.40 


1.40 


1.37 


1.20 


1.21 


1.18 


1.40 


1.59 


1.20 


1.50 


1.18 


1.39 


1.51 


1.31 


1.21 


1.20 


1.20 


1.40 




1.20 


1.40 


1.18 


1.46 


1.77 


1.24 


1.20 


1.20 


1.29 


1.40 




1.22 


1.36 


1.26 


1.45 


1.81 


1.24 


1.20 


1.20 


1.35 


1.40 


1.19 


1.29 


1.32 


1.60 


1.30 


1.52 


1.28 


1.20 


1.20 


1.38 


1.40 


1.11 


1.24 


1.35 


1.50 


1.24 


2.05 


1.57 


1.27 


1.20 


1.34 


1.36 


2.10 


1.24 


1.45 


1.40 


1.20 


1.61 


1.78 


1.25 


1.20 


1.58 


1.32 


1.58 


1.25 


1.40 


1.40 


1.20 


1.41 


1.63 


1.25 


1.20 


1.61 


1.31 


1.45 


1.25 


1.42 


1.40 


1.20 


1.76 


1.85 


1.23 


1.20 


1.74 


1.30 


1.41 


1.29 


2.40 


1.40 


1.24 


1.63 


1.42 


1.21 


1.20 


1.73 


1.30 


1.38 


1.29 


1.71 


1.39 


1.39 


2.01 


1.39 


1.20 


1.20 


2.15 


1.21 


1.40 


1.30 


1.49 


1.33 


1.29 


1.82 


1.34 


1.20 


1.19 


1.69 


1.23 


1.38 


1.29 


1.40 


1.40 


1.20 


1.65 


1.35- 


1.20 


1.24 


2.00 


1.22 


1.31 


1.28 


1.39 


1.42 


1.20 


1.63 


1.33 


1.28 


1.36 


1.89 


1.73 


1.24 


1.25 


1.39 


1.39 


1.19 


1.40 


1.32 


1.78 


1.29 


1.73 


1.63 


1.22 


1.21 


1.34 


1.32 


1.13 


1.33 


1.30 


1.41 


1.25 


1.60 


1.30 


1.20 


1.20 


1.33 


1.30 


1.10 


1.31 


1.42 


1.28 


1.21 


1.54 


1.22 


120 


1.68 


1.28 


1.26 


1.05 


1.30 


1.58 


1.20 


1.20 


1.50 


1.20 


1.20 


1.66 


1.35 


1.22 


1.03 


1.24 


1.32 


1.19 


1.20 


1.49 


1.21 


1.20 


1.82 


1.57 


1.21 


1.01 


1.20 


1.24 


1.16 


1.20 


1.42 


1.18 


1.20 


1.61 


1.58 


1.30 


1.03 


1.20 


1.22 


1.14 


1.20 


1.40 


1.10 


1.20 


2.04 


2.01 


1.25 


1.65 


1.20 


1.21 


1.31 


1.23 


1.41 


1.19 


1.20 


1.81 


1.78 


1.26 


1.64 


1.19 


1.20 


1.33 


1.20 


1.47 


1.20 


1.20 


1.59 


1.64 


1.64 


1.57 


1.15 


1.20 


1.30 


1.35 


1.50 


1.26 


1.20 


1.40 


1.45 


1.40 


1.31 


1.77 


1.29 


1.31 


1.38 


1.49 


1.22 


1.20 


1.33 


1.34 


1.34 


1.29 


1.36 


1.40 


1.20 


1.26 


1.44 


1.21 


1.20 


1.99 


1.30 


1.35 


1.20 


1.24 


1.32 


1.26 


1.24 


1.43 


2.06 


1.20 


1.69 


1.26 


1.30 


1.21 


1.35 


1.29 


1.88 


1.22 


1.43 


1.46 


1.20 


1.42 


1.22 


1.30 


1.20 


1.32 


1.22 


1.79 


1.20 


1.40 


1.17 


1.20 


1.53 


1.52 


1.28 




1.28 


1.21 


1.40 


1.19 


1.39 


1.09 


1.20 


1.42 


1.67 


1.51 




1.40 




1.29 




1.40 


1.07 




1.54 





Dec. 



1 
2 
3 
4 
5 

6 

7 
8 
9 
10 

11 
12 
13 
14 
15 

16, 
17. 

18. 
19 
20. 

21. 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



2.12 
3.18 
3.28 
2.02 
1.70 

1.58 
1.50 
1.55 
1.45 
1.40 

1.34 
1.30 
1.21 
1.20 
1.21 

1.20 
1.20 
1.20 
1.20 
1.50 

1.46 
1.82 
1.88 
1.58 
1.72 

1.59 

1.42 
1.30 
1.27 
1.20 
1.20 



40 WATER RESOURCES OF HAWAII, 1912. 

Daily discharge, in second-feet, of Waialae Stream near Waimea, Kauai, for 1912. 

Day. 



l 
2 
3 
4 
5 

6 

7 
8 
9 
10 

11 

12 
13 
14 
15 

16 
17 
18 
19 
20 

21 
22 

23 
24 
25. 

26, 
27, 
28, 
29 
30 
31. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


5.8 


17.0 


17.0 


15.2 


6.3 


6.8 


5.8 


17.0 


29.3 


6.3 


23.0 


5.8 


16.4 


23.7 


11.6 


6.8 


6.3 


6.3 


17.0 


21.6 


6.3 


17.0 


5.8 


20.6 


43.6 


8.2 


6.3 


6.3 


10.5 


17.0 


13.9 


7.2 


14.6 


9.1 


20.0 


46.8 


8.2 


6.3 


6.3 


14.0 


17.0 


6.1 


10.5 


12.2 


30.0 


11.0 


24.4 


10.1 


6.3 


6.3 


15.8 


17.0 


4.2 


8.2 


14.0 


23.0 


8.2 


67.0 


27.9 


9.6 


6.3 


13.4 


14.6 


71.0 


8.2 


20.0 


17.0 


6.3 


30.8 


44.4 


8.7 


6.3 


28.6 


12.2 


28.6 


8.7 


17.0 


17.0 


6.3 


17.6 


32.4 


8: 7 


6.3 


30.8 


11.6 


20.0 


8.7 


18.2 


17.0 


6.3 


42.8 


50.0 


7.7 


6.3 


41.2 


11.0 


17.6 


10.5 


97.0 


17.0 


8.2 


32.4 


18.2 


6.8 


6.3 


40.4 


11.0 


15.8 


10.5 


38.8 


16.4 


16.4 


63.8 


16.4 


6.3 


6.3 


75.5 


6.8 


17.0 


11.0 


22.4 


12.8 


10.5 


47.6 


13.4 


6.3 


6.1 


37.2 


7.7 


15.8 


10.5 


17.0 


17.0 


6.3 


34.0 


14.0 


6.3 


8.2 


63.0 


7.2 


11.6 


10.1 


16.4 


18.2 


6.3 


32.4 


12.8 


10.1 


14.6 


53.2 


40.4 


8.2 


8.7 


16.4 


16.4 


6.1 


17.0 


12.2 


44.4 


10.5 


40.4 


32.4 


7.2 


6.8 


13.4 


12.2 


4.7 


12.8 


11.0 


17.6 


8.6 


30.0 


11.0 


6.3 


6.3 


12.8 


11.0 


4.0 


11.6 


18.2 


10.1 


6.8 


25.8 


7.2 


6.3 


36.4 


10.1 


9.1 


3.6 


11.0 


28.6 


6.3 


6.3 


23.0 


6.3 


6.3 


34.8 


14.0 


7.2 


3.6 


8.2 


12.2 


6.1 


6.3 


22.4 


6.7 


6.3 


47.6 


27.9 


6.8 


3.5 


6.3 


8.2 


5.4 


6.3 


18.2 


5.8 


6.3 


30.8 


28.6 


11.0 


3.6 


6.3 


7.2 


4.9 


6.3 


17.0 


4.0 


6.3 


66.2 


63.8 


8.6 


34.0 


6.3 


6.8 


11.6 


7.7 


17.6 


6.1 


6.3 


46.8 


44.4 


9.1 


33.2 


6.1 


6.3 


12.8 


6.3 


21.2 


6.3 


6.3 


29.3 


33.2 


33.2 


27.9 


5.2 


6.3 


11.0 


14.0 


23.0 


9.1 


6.3 


17.0 


20.0 


17.0 


11.6 


43.6 


10.5 


11.6 


15.8 


22.4 


7.2 


6.3 


12.8 


13.4 


13.4 


10.5 


14.6 


17.0 


6.3 


9.1 


19.4 


6.8 


6.3 


62.1 


11.0 


14.0 


6.3 


8.2 


12.2 


9.1 


8.2 


18.8 


67.8 


6.3 


37.2 


9.1 


11.0 


6.8 


14.0 


10.5 


52.4 


7.2 


18.8 


20.6 


6.3 


18.2 


7.2 


11.0 


6.3 


12.2 


7.2 


45.2 


6.3 


17.0 


5.6 


6.3 


25.1 


24.4 


10.1 




10.1 


6.8 


17.0 


6.1 


16.4 


3.9 


6.3 


18.2 


35.6 


23.7 




17.0 




10.5 




17.0 


3.7 




25.8 





Monthly discharge of Waialae Stream near Waimea, Kauai, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


January 


33.2 

34.0 
67.0 
50.0 
52.4 
15.8 
75.5 
67.8 
71.0 
66.2 
97.0 
175.0 


5.8 
3.5 
5.2 
6.3 
4.9 
6.1 
5.8 
3.7 
4.2 
6.3 
7.2 
6.3 


14.1 
11.2 
23.7 
15.5 
12.4 
7.68 
25.9 
13.5 
12.7 
20.9 
23.8 
32.0 


867 

644 

1,460 

922 

762 

457 

1,590 

830 

756 

1,290 

1,420 

1,970 


B. 


February 


B. 


March 


B. 




A. 


May 


A. 


June 


B. 


July 


A. 


August 


A. 




B. 


October 


B. 


November 


B. 


December 


B. 








175.0 


3.5 


17.8 


13, 000 









KEKAHA DITCH AT CAMP NO. 1,1 NEAR WAIMEA, KAUAI. 

Location. — About 8 miles north of Waimea at camp No. 1 and a short distance below 

the diversion dam. 
Records available. — January 1, 1910, to December 31, 1912. 
Gage. — Vertical staff ; read once a day; datum unchanged. 
Discharge measurements. — Made with an 8-foot sharp-crested weir. 
Cooperation. — Gage heights furnished by the Kekaha Sugar Co. 



Described in Water-Supply Paper 318 as Kekaha ditch at intake near Waimea. 



ISLAND OF KAUAI. 



41 



The following discharge measurement was made by W. V. Hardy at the United 
States Geological Survey gage, about 200 feet above the Kekaha Sugar Co.'s weir: 
March 8, 1912: Gage height, 3.64 feet; discharge, 85.3 second-feet. 

Daily discharge, in second-feet, of Kekaha ditch at camp No. 1, near Waimea, Kauai, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


62.0 
57.0 
55.0 
57.0 
85.0 

87.5 
62.0 
53.0 
71.0 
80.0 

57.0 
53.0 
71.0 
90.0 
64.0 

53.0 
49.0 
45.0 
43.0 
43.0 

75.0 
53.0 
47.0 
90.0 
90.0 

62.0 
53.0 
55.0 
57.0 
53.0 
90.0 


80.0 
75.0 
90.0 
90.0 
90.0 

73.0 
62.0 
66.0 
59.5 
55.0 

90.0 
75.0 
59.5 
53.0 
49.0 

47.0 
47.0 
45.0 
53.0 
58.2 

90.0 
90.0 
90.0 
90.0 
90.0 

90.0 
90.0 
90.0 
80.0 


90.0 
90.0 
90.0 
90.0 
90.0 

90.0 
90.0 
90.0 
90.0 
90.0 

90.0 
91.2 
91.2 
91.2 
91.2 

91.2 
90.0 
82.5 
77.5 
77.5 

91.2 
91.2 
80.0 
66.0 
90.0 

91.2 
91.2 
91.2 
91.2 
91.2 
91.2 


91.2 
91.2 
91.2 
85.0 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 

n 

85.0 
90.0 

90.0 
90.0 
82.5 
82.5 
82.5 

85.0 
80.0 
75.0 
71.0 
67.2 

87.5 
90.0 
75.0 
71.0 
62.0 


57.0 
54.0 
55.0 
53.0 

87.5 

80.0 
57.0 
53.0 
77.5 
57.0 

51.0 
49.0 
49.0 
47.0 
85.0 

85.0 
85.0 
66.0 
53.0 
49.0 

49.0 
53.0 
80.0 
75.0 
90.0 

100.0 
53.0 
90.0 

87.5 
87.5 
66.0 


53.0 
49.0 
47.0 
59.5 
57.0 

49.0 
43.0 
43.0 
41.0 
43.0 

45.0 
41.0 
41.0 
80.0 
57.0 

51.0 
49.0 
45.0 
53.0 
66.0 

49.0 
66.0 
49.0 
53.0 
85.0 

57.0 
85.0 
57.0 
43.0 
37.0 


37.0 
37.0 
35.5 
35.5 
35.5 

35.5 
41.0 
53.0 
41.0 
90.0 

90.0 
90.0 
57.0 
90.0 
90.0 

71.0 
53.0 
64.0 
47.0 
43.0 

37.0 
37.0 
35.5 
35.5 
53.0 

41.0 
60.8 
41.0 
35.5 
35.5 
75.0 


47.0 
37.0 
35.5 
34.0 
34.0 

62.0 
41.0 
37.0 
75.0 
75.0 

47.0 
75.0 
53.0 
71.0 
90.0 

82.5 
49.0 
41.0 
37.0 
34.0 

34.0 

57.0 
85.0 
90.0 
66.0 

53.0 
90.0 
90.0 
62.0 
90.0 
90.0 


90.0 
90.0 
90.0 
82.5 
57.0 

53.0 
90.0 
80.0 
62.0 
53.0 

49.0 
49.0 
49.0 
45.0 
39.0 

37.0 

35.5 
34.0 
41.0 
35.5 

34.0 
34.0 
34.0 
32.0 
32.0 

32.0 
30.0 
30.0 
30.0 
30.0 


45.0 
37.0 
35.5 
47.0 
35.5 

32.0 
30.0 
30.0 
37.0 
45.0 

45.0 
37.0 
37.0 
34.0 
30.0 

30.0 
30.0 
90.0 
90.0 
90.0 

90.0 
90.0 
90.0 
71.0 
49.0 

90.0 
90.0 
71.0 
90.0 
53.0 
95.0 


92.5 
57.0 
43.0 
37.0 
41.0 

57.0 
41.0 
37.0 
90.0 
92.5 

66.0 
53.0 
45.0 
41.0 
37.0 

82.5 
55.0 
45.0 
95.0 
80.0 

90.0 
90.0 
92.5 
100.0 
73.0 

57.0 
49.0 
45.0 
47.0 
100.0 


92.5 


2 


92.5 


3 


85.0 


4 


85.0 


5 


90.0 


6 


90.0 


7 


90.0 


8 


90.0 


9 


90.0 


10 


80.0 


11 


80.0 


12 


66.0 


13 


62.0 


14 


53.0 


15 


53.0 


16 


57.0 


17 


59.5 


18 


53.0 


19 


53.0 


20 


92.5 


21 


85.0 


22 


92.5 


23 


92.5 


24 


92.5 


25 


92.5 


26 


92.5 


27 


92.5 


28 


75.0 


29 


62.0 


30 


57.0 


31 


53.0 







a Ditch dry Apr. 5-13. 



3 

Note. — Discharge computed from Francis's formula: Q=3.33 LH where L=8 ft. 

Monthly discharge of Kekaha ditch at camp No. 1, near Waimea, Kauai, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Maximum. 


Minimum. 


Mean. 


January 


90.0 
90.0 
91.2 
91.2 

100.0 
85.0 
90.0 
90.0 
90.0 
90.0 

100.0 
92.5 


43.0 
45.0 
66.0 
62.0 
47.0 
37.0 
35.5 
34.0 
30.0 
30.0 
37.0 
53.0 


63.3 
73.0 

88.4 
a 82.1 
67.1 
53.1 
52.3 
60.1 
49.3 
57.0 
64.4 
• 77.5 


3,890 
4,200 
5,440 
3,420 
4,130 
3,160 
3,220 
3,700 
2,930 
3,500 
3,830 
4,770 


February 


March 


April 


May 


June 


July 


August 




October 


November 


December 




The year 


100.0 


30.0 


6 65.2 


46,200 





a Ditch was dry Apr. 5-13; mean for the month is mean of 21 days. 
b Mean fo'r the year is mean of 357 days. 



42 



WATER RESOURCES OF HAWAII, 1912. 



KEKAHA DITCH AT FLUME NO. JM NEAR WAIMEA, KAUAI. 

Location. — About 6 miles north of Waimea and 2 miles below intake. 

Records available. — December 1, 1910, to December 31, 1912. 

Gage. — Vertical staff; read twice daily, at 7 a. m. and 5 p. m.; datum unchanged. 

Channel. — Probably permanent. 

Discharge measurements. — Made from tie beam 2 feet above gage. 

Cooperation. — Station maintained in cooperation with Kekaha Sugar Co. 

The following discharge measurement was made by W. V. Hardy: 
March 8, 1912: Gage height, 2.80 feet; discharge, 84.6 second-feet. 

Daily gage height, in feet, of Kekaha ditch at flume No. 2, near Waimea, Kauai, for 1912. 

[Manuel Arruda, observer.] 



Day. 



1 
2 
3 
4 
5 

6 

7. 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 

18 
19 
20 

21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



Jan. 



2.08 
2.01 
2.01 
2.11 
2.78 

2.52 
2.08 
2.25 
2.30 
2.38 

2.00 
1.95 
2.52 
2.66 
2.06 

1.88 
1.78 
1.70 
1.65 
.1.65 

2.34 

1.88 
2.28 
2.80 
2.64 

2.15 
2.00 
2.16 
2.02 
2.14 
2.80 



Feb. 



2.42 
2.68 
2.82 
2.80 
2.69 

2.26 
2.12 
2.28 
2.04 
2.14 

2.80 
2.40 
2.12 
1.98 
1.85 

1.80 
1.80 
1.76 
2.12 
2.05 

2.85 
2.86 
2.85 
2.85 
2.80 

2.85 

2.88 
2.85 
2.52 



Mar. 



2.86 
2.85 
2.85 
2.86 
2.86 

2.85 
2.85 
2.82 
2.85 
2.86 

2.86 
2.87 
2.86 
2.85 
2.85 

2.85 
2.75 
2.58 
2.53 
2.70 

2.85 
2.72 
2.48 
2.25 
2.85 

2.85 
2.85 
2.86 
2.85 
2.85 
2.85 



Apr. 



2.85 
2.85 
2.85 
2.70 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 

(<0 
(a) 

2.50 
2.60 

2.60 
2.60 



2.60 
2.46 
2.37 
2.25 
1.98 



May. 



1.93 
1.85 
1.85 
2.22 
2.60 

2.28 
1.95 
2.08 
2.25 
1.95 

1.82 
1.75 
1.70 
1.62 
2.65 

2.65 
2.46 
2.12 
1.80 
1.70 

1,70 
2.28 
2.36 
2.52 
2.52 

1.95 

2.26 
2.60 
2.60 
2.60 
2.11 



June. 



1.88 
1.66 
1.60 
2.02 
1.95 

1.65 
1.55 
1.52 
1.50 
1.55 

1.55 
1.50 
1.50 
2.32 
1.90 

1.74 
1.68 
1.62 
2.06 
2.06 

1.78 
2.05 
1.67 
2.30 
2.46 

1.92 
2.30 
1.80 
1.53 
1.50 



July. 



1.38 
1.38 
1.35 
1.35 
1.35 



2.70 
2.52 
1.92 
2.70 
2.70 

2.16 

1.88 
2.00 
1.65 
1.48 

1.42 



Aug. 



1.55 
1.38 
1.35 
1.30 
1.58 

1.85 
1.45 
2.05 
2.40 
2.20 

1.90 
2.25 
2.22 
2.50 
2.70 

2.26 
1.71 
1.45 
1.38 
1.30 

1.35 
2.10 
2.65 
2.38 
2.15 

1.74 
2.70 
2.52 
1.98 
2.70 
2.70 



Sept. 



2.60 
2.70 
2.72 
2.32 
1.92 

2.32 
2.75 
2.36 
2.04 
1.90 

1.84 
1.87 
1.84 
1.65 
1.42 

1.38 
1.32 
1.40 
1.45 
1.35 

1.30 
1.30 
1.28 
1.25 
1.25 

1.22 
1.20 
1.20 
1.20 
1.25 



Oct. 



1.50 
1.35 
1.30 
1.48 
1.28 

1.20 
1.15 
1.20 
1.40 
1.60 

1.55 
1.35 
1.32 
1.22 
1.18 

1.15 
1.95 
2.32 
2.75 
2.38 

2.75 
2.75 
2.75 
2.02 
2.16 

2.75 
2.75 
2.08 
2.42 
2.28 
2.85 



Nov. 



2.52 
1.75 
1.48 
1.35 
1.35 

1.72 
1.45 
2.08 
2.80 
2.78 

2.04 
1.75 
1.45 
1.42 
2.15 

2.28 

1.78 
2.20 
2.85 
2.72 

2.75 
2.75 
2.82 
2.78 
2.15 

1.85 
1.70 
1.60 
2.95 
2.92 



Dec. 



2.80 
2.70 
2.60 
2.68 
2.75 

2.75 
2.75 

2.75 
2.75 
2.50 

2.35 
2.08 
1.98 
1.80 
1.82 

1.95 
1.95 
1.80 
1.75 
2.75 

2.68 
2.80 
2.80 
2.80 
2.80 

2 80 
2.65 
2.28 
1.98 
1.88 
1.80 



a Ditch dry Apr. 5 to 13. 
KEKAHA DITCH AT SIPHON NEAR WAIMEA, KAUAI. 

Location. — About 4 miles north of Waimea, 50 feet above upper end of siphon where 

ditch crosses Waimea River. 
Records available. — December 1, 1910, to December 31, 1912. 
Gage. — Vertical staff; read twice daily, at 7 a. m. and 5 p.m.; datum unchanged. 
Channel. — Probably permanent. 

Discharge measurements. — Made from a temporary foot bridge. 
Cooperation. — Station maintained- in cooperation with Kekaha Sugar Co. 

The following discharge measurement was made by W. V. Hardy: 
March 8, 1912: Gage height, 4.43 feet; discharge, 74.4 second-feet. 



i Described in Water Supply Paper 318, p 62, as " Kekaha 'ditch at flume No. 3." 



ISLAND OF KAUAI. 



43 



Daily gage height, in feet, of Kekaha ditch at siphon near Waimea, Kauai, for 1912. 

[Manuel Arruda, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.82 
1.75 
1.70 
1.75 
3.40 

2.75 
1.85 
1.85 
1.88 
2.08 

1.70 
1.60 
3.05 
3.42 
1.80 

1.65 
1.52 
1.45 
1.40 
1.60 

2.30 
1.65 
2.42 
4.35 
3.45 

1.78 
1.70 
1.82 
1.68 
1.80 
4.28 


2.05 

3.52 
4.30 
4.65 
4.25 

2.00 

1.80 
1.85 
1.72 
1.80 

4.70 
2.10 
1.75 
1.62 
1.52 

1.50 
1.50 
1.50 
1.68 
1.70 

4.22 
5.00 
4.70 
4.50 
4.40 

4.50 

4.75 
4.15 
2.58 


4.45 
4.60 
4.90 
4.88 
4.45 

4.88 
4.80 
4.62 
4.80 
4.50 

4.55 
5.05 
5.10 
4.90 
4.92 

4.72 
3.45 
2.48 
2.12 
3.52 

4.70 
3.20 
2.05 
1.90 
5.30 

5.10 
4.62 
4.68 
4.55 
4.35 
4.68 


4.65 
4.65 
4.40 
3.00 

"'3."60' 
5.28 

5.25 
5.20 
5.20 
5.30 
4.92 

5.15 
3.95 
2.98 
2.25 
2.10 

4.75 
4.15 
2.95 
2.08 
1.82 


1.72 
1.68 
1.68 
3.02 
5.28 

2.35 
1.75 
1.88 
2.70 
1.75 

1.62 
1.60 
1.60 
2.80 
5.30 

5.30 

5.20 
1.90 
1.68 
1.60 

1.60 
3.50 
3.05 
4.65 
4.90 

1.85 
1.80 
5.30 
5.20 
4.90 
1.90 


1.68 
1.55 
1.50 
1.82 
1.65 

1.55 
1.45 
1.42 
1.40 
1.48 

1.42 
1.40 
1.40 
3.20 
1.70 

1.62 
1.55 
1.75 
1.80 
1.95 

1.56 
1.96 
1.60 
2.94 
2.65 

1.68 
2.15 
1.68 
1.42 
1.30 


1.25 
1.25 
1.25 
1.25 
1.25 

1.40 
1.40 
1.60 
1.38 
5.30 

5.00 
3.60 
1.80 
5.20 
5.10 

1.88 
1.70 
1.75 
1.52 
1.38 

1.30 
1.25 
1.25 
1.25 
1.58 

1.30 
1.65 
1.32 
1.25 
1.38 
3.00 


1.40 
1.25 
1.25 
1.20 
1.40 

1.65 
1.34 
3.29 
4.40 
3.10 

1.70 
3.12 
3.12 
3.65 
5.20 

3.18 
1.52 
1.34 
1.26 
1.20 

1.25 
1.88 
4.90 
3.50 
1.90 

1.58 
5.15 
3.68 
1.75 
5.30 
5.30 


5.05 
5.50 
5.50 
4.08 
1.75 

3.58 
5.50 
2.92 
1.80 
1.70 

1.52 
1.52 
1.45 
1.35 
1.30 

1.30 
1.30 
1.32 
1.28 
1.22 

1.20 
1.20 
1.15 
1.15 
1.15 

1.15 
1.10 
1.10 
1.10 
1.15 


1.42 
1.50 
1.22 
1.45 
1.22 

1.18 
1.10 
1.12 
1.25 
1.52 

1.70 
1.30 
1.25 
1.20 
1.15 

1.10 
1.10 
3.28 
4.75 
2.85 

5.15 
5.50 
5.45 
1.88 
1.50 

4.92 
4.45 
1.80 
2.60 
2.50 
4.25 


3.20 
1.52 
1.30 
1.25 
1.25 

1.52 
1.30 
1.30 
5.50 
5.50 

1.85 
1.55 
1.45 
1.32 
1.30 

2.38 
1.55 
1.45 
5.00 
2.02 

5.50 
5.50 
5.50 
5.50 
1.95 

1.68 
1.52 
1.45 
3.45 
5.50 


5.50 


2 


5.50 


3 


3.75 


4 


3.60 


5 


5.00 


6 


5.00 


7 


5.50 


8 


5.50 


9 


4.65 


10 


3.55 


11 


2.90 


12 


1.92 


13 


1.78 


14 


1.82 


15 


1.75 


16 


1.70 


17 


1.72 


18 


1.65 


19 


1.50 


20 


4.85 


21 


4.70 


22 


5.30 


23... 


5.50 


24 


5.50 


25 


5.50 


26 


5.30 


27 


4.50 


28 


2.25 


29 


1.80 


30 


1.68 


31 


1.60 







KEKAHA DITCH AT TUNNEL No. 12, NEAR WAIMEA, KAUAI. 

Location. — About 2 miles north of Waimea, and one-fourth mile below mouth of 

tunnel No. 12. 
Records available. — January 1, 1910, to December 31, 1912. 
Gage. — Vertical staff; read once daily; datum unchanged. 
Discharge measurements. — Computed from flow over 6-foot weir with end con- 

• tractions. 
Cooperation. — Gage heights furnished by Kekaha Sugar Co. 

Daily gage height, in inches, of Kekaha ditch at tunnel No. 12, near Waimea, Kauai, for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1 
2 
3 
4 
5 

6 

8 
9 
10 

11 
12 
13 
14 
15 



25 
22| 
21 1 
21 

27i 



25 

24J 

25 



21 
23 

27! 
25| 



28| 
24£ 
28! 
28! 
28| 

26 

23! 

23! 

23 

21i 



27 
23 
21| 
20J 



29 



29| 

29| 
30J 



29J 

29J 

30 



29! 



30J 
29! 
30 
30 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 



(a) 
(a) 
(a) 

28! 

29 



23! 

22! 

22! 

22 

30! 

29 
24 
23 
26 
24 



22 

22 

21! 

20 

30 



23 
22 
21 
21 
23 

21 

20! 

20! 

21! 

19! 



19! 

19! 

18! 

30 

24! 

a Ditch dry Apr. 5-13 



19 
16! 

16! 
16! 
16! 

22! 
19i 
23 
18 



20 

23 

18 
17! 



29 

29 

29! 

28 

22! 

21 

29! 

24 

24 

21 

19 

19! 

18 

18 

17 



19 

18-! 
16! 
20 
16! 



16 
16! 
16! 
19 

18! 

17! 

18 

17! 

15! 



27 
20 
17 
16 
16 

21! 

16 

16 

31 

29! 



21! 
19! 
16 
16 



30 
30 
18 
26 
30 

31! 
31 
29! 
30! 

28! 



25! 

24 

23! 



44 



WATEB RESOURCES OF HAWAII, 1912. 



Daily gage height, in inches, of Kekaha ditch at tunnel No. 12, near Waimea, Kauai, for 

1912— Continued. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



16 
17 
18. 
19 
20 

21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



21 

20| 

191 

18* 

18J 

27J 
22 



29 

231 

214 

21 

221 

201 

27 



19§ 
19 

191 

21 

23 

27 

30* 

284 

29 

291 

29i 
281 
29 
28| 



30 
291 

28 
27| 



30 
261 
26 
32 

31* 

30* 

29! 

31 

28i 

311 



271 

241 

221 

30 

30 

30 

27 



22 

221 

211 

22 

26 

23 

251 
231 
24 
281 

24 

24 
24 
20 
20 



181 

18 

171 

18 

221 

18 
22 
18 
17 
17 



29 
22 
18 
17 
161 

16 



241 

191 

171 

291 

24 

29 

291 



17 
17 

181 

17 

161 

16 
16 
16 
16 
151 

151 
151 
151 
151 
151 



15 
151 
281 
25 



28f 

31 

30 

27 

18 

28 
28 
26 
24 
20 
28 



211 
181 
29 
27 

31 

31 

30 

291 

27 

221 

20 

19 

17 

291 



Daily discharge, in second-feet, of Kekaha ditch at tunnel No. 12, near Waimea, Kauai, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June.' 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


57.0 
49.2 
46.2 
44.0 
64.5 

60.0 
57.0 
55.0 
57.0 
60.0 

48.5 
44.0 
50.0 
64.5 
58.5 

44.0 
42.5 
40.0 
37.5 
37.5 

64.5 
47.0 
61.5 
71.5 
70.0 

51.5 
45.5 
44.0 
48.5 
43.2 
63.0 


69.0 
55.0 
68.0 
68.0 
69.0 

60.0 
51.5 
51.5 
50.0 
45.5 

66.0 
63.0 
50.0 
45.5 
41.8 

40.0 
39.0 
39.5 
44.0 
50.0 

63.0 
75.0 
68.0 
70.0 
71.5 

70.8 
68.0 
70.0 
69.0 


70.0 
73.0 
72.2 
73.0 
72.2 

72.2 
74.0 
71.5 
71.5 
71.5 

71.5 
.73.0 
73.0 
72.2 
71.5 

73.0 
71.5 
66.0 
65.2 
73.0 

73.0 
73.0 
61.5 
60.0 
80.0 

78.5 
75.0 
72.2 
77.0 
67.0 
78.5 


75.0 
72.2 
73.0 
73.0 
(a) 

raj 

(a) 

(°) 

(a) 

(*) 

00 

(a) 
(a) 
68.0 
70.0 

70.0 
71.5 
77.0 
77.0 
75.0 

75.0 
72.2 
69.0 
64.5 
58.5 

71.5 
73.0 
70.0 
63.0 
57.0 


51.5 

48.5 
48.5 
47.0 
75.0 

70.0 
53.0 
50.0 
60.0 
53.0 

47.0 
47.0 
45.5 
41.0 
73.0 

73.0 
70.0 
63.0 
48.5 
44.0 

44.0 
47.0 
66.0 
66.0 
64.5 

55.0 
48.5 
73.0 
73.0 
73.0 
63.0 


50.0 
47.0 
44.0 
44.0 
50.0 

44.0 
42.5 
42.5 
45.5 
40.0 

40.0 
40.0 
37.5 
73.0 
55.0 

47.0 
48.5 
45.5 
47.0 
60.0 

50.0 
58.5 
51.5 
53.0 
68.0 

53.0 
53.0 
53.0 
41.0 
41.0 


39.0 
32.5 
32.5 
32.5 
32.5 

48.5 
40.0 
50.0 
36.0 
73.0 

73.0 
77.0 
57.0 
73.0 
70.0 

60.0 
47.0 
53.0 
44.0 
41.0 

37.5 
36.0 
35.0 
36.0 
48.5 

36.0 
47.0 
36.0 
34.0 
34.0 
73.0 


41.0 
35.0 
34.0 
32.5 
31.0 

50.0 
36.0 
35.0 
70.0 
66.0 

50.0 
60.0 
47.0 
63.0 
73.0 

70.0 
47.0 
36.0 
34.0 
32.5 

31.0 

47.0 
64.5 
69.0 
55.0 

40.0 
35.0 
71.5 
53.0 
70.0 
71.5 


70.0 
70.0 
71.5 
66.0 

48.5 

44.0 
71.5 
53.0 
53.0 
44.0 

39.0 
40.0 
36.0 
36.0 
34.0 

34.0 
34.0 
37.5 
34.0 
32.5 

31.0 
31.0 
31.0 
31.0 
30.0 

30.0 
30.0 
30.0 
30.0 
30.0 


39.0 
37.5 
32.5 
41.0 
32.5 

31.0 
31.0 
32.5 
32.5 
39.0 

37.5 
35.0 
36.0 
35.0 
30.0 

29.0 
30.0 
68.0 
57.0 
66.0 

69.0 
77.0 
73.0 
63.0 
36.0 

66.0 
66.0 
60.0 
53.0 
41.0 
66.0 


63.0 
41.0 
34.0 
31.0 
31.0 

45.5 
31.0 
31.0 
77.0 
71.5 

60.0 
45.5 
40.0 
31.0 
31.0 

66.0 
45.5 
37.5 
70.0 
63.0 

77.0 
77.0 
73.0 
71.5 
63.0 

48.5 
41.0 
39.0 
34.0 
71.5 


73.0 


2 


73.0 


3 


36.0 


4 


60.0 


5 


73.0 


6 


78.5 


7 


77.0 


8 


71.5 


9 „ 


75.0 


10 


68.0 


11 


68.0 


12 


61.5 


13 


58.5 


14 


53.0 


15 


51.5 


16 


51.5 


17 


51.5 


18 


50.0 


19 


44.0 


20 


60.0 


21 


73.0 


22 i 


77.0 


23 


77.0 


24 


77.0 


25 


71.5 


26 


71.5 


27 


71.5 


28 


63.0 


29 


63.0 


30 


50.0 


31 


50.0 







a Ditch dry Apr. 5-13. 



ISLAND OF KAUAI. 45 

Monthly discharge of Kekaha ditch at tunnel No. 12, near Waimea, Kauai, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Maximum. 


Minimum. 


Mean. 




71.5 
75.0 
80.0 
77.0 
75.0 
73.0 
77.0 
73.0 
71.5 
77.0 
77.0 
78.5 


37.5 
39.0 
60.0 
57.0 
41.0 
37.5 
32.5 
31.0 
30.0 
29.0 
31.0 
36.0 


52.5 

58.3 
71.8 
a 70. 3 
57.5 
48.8 
47.2 
50.0 
41.8 
46.5 
51.4 
63.8 


3,230 




3,350 




4,410 




2,930 


May 


3,540 


June 


2,900 


July. 


2,900 




3,070 




2,490 




2,860 




3,060 


December 


3,920 








80.0 


29.0 


&54.6 


38,700 







a Ditch dry Apr. 5-13. Mean for the month is the mean of 21 days. 
ft Mean for the year is the mean of 357 days. 

WAIMEA DITCH NEAR WAIMEA, KAUAI. 

Location. — About 4 miles north of Waimea and 300 feet below intake. 

Records available. — November 4, 1911, to December 31, 1912. 

Gage. — Vertical staff; read once each day, at 7 a. m.; datum unchanged. 

Channel. — Fairly permanent. 

Discharge measurements. — Made from a pole bridge 8 feet long, and graduated in 

1-foot sections from to 5.7 feet. 
Diversions. — A lateral diverts water from the left bank of the ditch about 25 feet 

below the gage. 
Accuracy. — Record fair. 

Discharge measurements of Waimea ditch near Waimea, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 8 


W.V.Hardy 


Feet. 
2.29 
1.63 
1.66 


Sec.-ft. 
10.5 


July 13 


do 


6.92 


Sept. 30 


do 


3.61 







Daily gage height, in feet, of Waimea ditch near Waimea, Kauai, for 1912. 
[Honke, observer.] 



Day. 



1 
2 
3 
4 
5 

6 

7 
8 
9 
10 

11 
12 
13 
14 
15 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 



2.10 
2.00 
1.90 
2.50 
2.20 

2.20 
2.10 
1.95 
2.00 
2.20 



2.30 
2.20 
2.20 



2.20 
2.20 
2.20 
2.20 
2.20 

2.20 
2.20 
2.08 
2.15 
2.03 

2.20 
2.20 
2.00 
2.02 
2.01 



2.20 
2.20 
2.20 
2.25 
2.20 

2.40 
2.40 
2.30 
2.30 
2.40 

2.40 
2.40 
2.40 
2.40 
2.40 



2.30 
2.30 
2.30 
2.30 
2.40 

2.40 
2.40 
2.40 
2.40 
2.40 

2.60 
2.6a 
2.50 
2.50 
2.50 



1.80 
1.71 
1.85 
1.90 
2.43 

2.20 
1.70 
1.70 
1.78 
1.60 

1.78 
1.60 
1.80 

1.78 
2.60 



1.73 
1.60 
1.65 
1.80 
1.72 

1.72 
1.71 
1.72 
1.70 
1.71 

1.70 
1.70 
1.70 
2.00 
1.50 



1.50 
1.42 
1.50 
1.50 
1.50 

1.50 
1.50 
1.42 
1.40 
2.20 

1.20 
1.20 
1.53 
2.20 
2.10 



1.43 
1.42 
1.40 
1.40 
1.43 

1.40 
1.45 
1.42 
1.93 
2.00 

1.51 
1.70 
1.63 
1.93 
2.20 



2.20 
2.20 
2.20 
2.20 

1.88 

2.20 
2.20 
2.10 



1.72 
1.72 
1.72 
1.71 
1.71 



1.72 
1.72 
1.70 
1.72 
1.72 

1.70 
1.67 
1.65 
1.60 
1.60 

1.65 
1.70 
1.70 
1.70 
1.70 



2.60 
1.95 
1.98 
1.95 
1.82 

1.82 
1.80 
1.72 
2.75 
2.70 



1.79 
1.70 
1.65 
1.62 



1.90 
2.10 
1.70 
1.55 
1.30 

1.40 
1.70 
1.80 
1.80 
1.80 

1.60 
1.50 
1.34 
1.72 
1.72 



46 

Daily gage height, in feet, of Waimea ditch near Waimea, Kauai, for 1912 — Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16.. „ 


1.96 

2.00 
1.70 
1.55 
2.03 

2.20 
2.00 
1.88 
2.20 
2.20 

2.05 
1.98 


2.00 
1.99 
1.90 
19.0 
2.05 

2.13 
2.20 
2.20 
2.20 

2.20 
2.20 
2.20 
2.20 


2.40 
2.30 
2.30 
2.10 
2.00 

2.40 
2.20 
2.02 
2.20 
2.30 

2.30 
2.30 
2.30 
2.30 
2.30 
2.30 


2.20 
2.22 
2.50 
2.09 
2.00 

2.10 
1.80 
1.08 
1.05 
1.01 

2.60 
2.20 
1.85 
1.81 
1.71 


2.40 
2.60 
1.82 
1.80 
1.80 

1.80 
1.80 
2.20 
2.20 
2.51 

1.90 
1.80 
2.40 
2.20 
2.10 
1.70 


1.70 
1.70 
1.70 
1.70 
1.70 

1.70 
1.40 
1.40 
1.40 
1.90 

1.80 
1.53 
1.59 
1.52 
1.51 


2.00 
1.70 
1.60 
1.70 
1.50 

1.42 
1.51 
1.50 
1.50 
1.48 

1.48 
1.40 
1.40 
1.40 
1.40 
2.25 


2.15 
1.72 
1.70 
1.60 
1.62 

1.65 
1.50 
2.30 
2.30 
1.70 

1.70 
2.30 
2.20 
1.75 
2.20 
2.20 


1.69 
1.70 
1.70 
1.70 
1.40 

1.42 
1.40 
1.40 
1.40 
1.39 

1.25 
1.25 
1.30 
1.60 
1.67 


1.70 
1.70 
2.20 
2.20 
2.20 

2.55 

2.55 
2.70 
2.10 
1.90 

2.90 
2.60 
2.20 
2.20 
2.20 
2.75 


2.12 
1.90 
1.66 
2.70 
2.18 

2.70 
2.61 
2.65 
2.00 
1.91 

1.79 
1.75 
1.76 
1.71 
1.70 


1.70 


17 


1.65 


18 


1.61 


19 


1.60 


20 

21 


1.60 
1.90 


22 


2.05 


23 


2.20 


24 


2.00 


25 


1.92 


26 


1.50 


27... 


1.32 


28 


1.31 


29 


2.13 
2.08 
2.40 


1.50 


30 


1.50 


31 


1.50 







Note. — Gage was read without closing headgate for lateral whenever it might be in use, hence the dis- 
charge for some days will be too small. 

Daily discharge, in second-feet, of Waimea ditch near Waimea, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


7.8 
6.6 
5.5 
13.7 
9.2 

9.2 
7.8 
6.0 
6.6 
9.2 

4.5 
6.4 
10.6 
9.2 
9.2 

6.2 
6.6 
3.6 
2.6 

7.0 

9.2 
6.6 
5.3 
9.2 
9.2 

7.2 
6.4 
7.3 
8.2 
7.6 
12.1 


9.2 
9.2 
9.2 

9.2 

9.2 

9.2 
9.2 
7.6 

8.5 
7.0 

9.2 
9.2 
6.6 
6.8 
6.7 

6.6 
6.5 
5.5 
5.5 

7.2 

8.2 
9.2 
9.2 
9.2 
9.2 

9.2 
9.2 
9.2 
9.2 


9.2 
9.2 
9.2 
9.9 
9.2 

12.1 
12.1 
10.6 
10.6 
12.1 

12.1 
12.1 
12.1 
12.1 
12.1 

12.1 
10.6 
10.6 

7.8 
6.6 

12.1 
9.2 
6.8 
9.2 

10.6 

10.6 
10.6 
10.6 
10.6 
10.6 
10.6 


10.6 
10.6 
10.6 
10.6 
12.1 

12.1 
12.1 
12.1 
12.1 
12.1 

15.3 
15.3 
13.7 
13.7 
13.7 

9.2 
9.5 
13.7 

7.7 
6.6 

7.8 

4.5 

.8 

.7 

.6 

15.3 
9.2 
5.0 
4.5 
3.7 


4.5 
3.7 
5.0 
5.5 
12.6 

9.2 
3.6 
3.6 
4.3 
2.9 

4.3 
2.9 
4.5 
4.3 
15.3 

12.1 

15.3 

4.7 

4.5 

4.5 

4.5 
4.5 
9.2 
9.2 
13.9 

5.5 

4.5 

12.1 

9.2 

7.8 
3.6 


3.9 
2.9 
3.2 

4.5 
3.8 

3.8 
3.7 
3.8 
3.6 
3.7 

3.6 
3.6 
3.6 
6.6 

2.4 

3.6 
3.6 
3.6 
3.6 
3.6 

3.6 
1.9 
1.9 
1.9 
5.5 

4.5 
2.6 
2.8 
2.5 

2.4 


2.4 
2.0 
2.4 
2.4 
2.4 

2.4 
2.4 
2.0 
1.9 
9.2 

1.1 
1.1 

2.6 
9.2 

7.8 

6.6 
3.6 
2.9 
3.6 
2.4 

2.0 
2.4 
2.4 
2.4 
2.3 

2.3 
1.9 
1.9 
1.9 
1.9 
9.9 


2.0 
2.0 
1.9 
1.9 
2.0 

1.9 
2.2 
2.0 
5.8 
6.6 

2.4 
3.6 
3.1 
5.8- 
9.2 

8.5 
3.8 
3.6 
2.9 
3.0 

3.2 

2.4 
10.6 
10.6 

3.6 

3.6 
10.6 
9.2 
4.0 
9.2 
9.2 


9.2 
9.2 
9.2 
9.2 
5.3 

9.2 
9.2 
7.8 
3.9 
3.9 

3.8 
3.8 
3.8 
3.7 

3.7 

3.5 
3.6 
3.6 
3.6 
1.9 

2.0 
1.9 
1.9 
1.9 
1.9 

1.3 
1.3 
1.5 
2.9 

3.4 


3.8 
3.8 
3.6 
3.8 
3.8 

3.6 
3.4 
3.2 
2.9 
2.9 

3.2 
3.6 
3.6 
3.6 

3.6 

3.6 
3.6 
9.2 
9.2 
6.6 

14.5 
14.5 
16.9 
7.8 
5.5 

20.3 
15.3 
9.2 
9.2 
9.2 
17.7 


15.3 
6.0 
6.4 
6.0 

4.7 

4.7 
4.5 
3.8 
17.7 
16.9 

4.5 
4.4 
3.6 
3.2 
3.0 

8.1 
5.5 
3.3 
16.9 
8.9 

16.9 
15.5 
16.1 
6.6 
5.6 

4.4 
4.0 
4.1 
3.7 
3.6 


5.5 


2 


7.8 


3 


3.6 


4 


2.6 


5 


1.5 


6 


1.9 


7 


3.6 


8.. 


4.5 


9 


4.5 


10 


4.5 


11 


2.9 


12 


2.4 


13 


1.7 


14 


3.8 


15 


3.8 


16 


3.6 


17 


3.2 


18 


3.0 


19 


2.9 


20 


2.9 


21 


5.5 


22 


7.2 


23 


9.2 


24 


6.6 


25 


5.7 


26 


2.4 


27 


1.6 


28 


1.5 


29 


2.4 


30 


2.4 


31 


2.4 







Note. — A lateral diverts water from the left bank of ditch about 25 feet below gage. Daily discharge 
determined from a rating curve prepared from measurements made when lateral was dry. When lateral 
is carrying water the main ditch carries more water than is indicated by rating table. 



ISLAND OF KAUAI. 

Monthly discharge of Waimea ditch near Waimea, Kauai, for 1912. 



47 



Month. 



January... 

February 

March 

April 

May 

June 

July 

August. 

September 

October 

November 

December 

The year 



Discharge in second-feet. 



Maximum. Minimum 



13.7 
9.2 
12.1 
15.3 
15.3 



10.6 
9.2 
20.3 
17.7 
9.2 



20.3 



2.6 
5.5 
6.6 
.6 
2.9 
1.9 
1.1 
1.9 
1.3 
2.9 
3.0 
1.5 



Mean. 



7.61 

8.24 
10.40 
9.52 
6.82 
3.48 
3.28 
4.85 
4.37 
7.25 
7.60 
3.78 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



474 
640 
566 
419 
207 
202 
298 
260 
446 
452 
232 



4,660 



KAMENEHUNE DITCH NEAR WAIMEA, KATJAI. 

Location. — About 3 miles above Waimea and 200 feet below wire suspension bridge 
across Waimea River; reached by wagon road up the right side of Waimea River. 
Records available. — October 9, 1911, to December 31, 1912. 
Gage. — Vertical staff; read once daily, at irregular hours; datum unchanged. 
Channel. — Probably shifting. 

Discharge measurements. — Made from plank across ditch. 
Accuracy. — Data insufficient for estimate of discharge. 

Discharge measurements of Kamenehune ditch near Waimea, Kauai, in 1912. 
[Hydrographer, -^ y Hardy.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 




Feet. 

1.23 

.92 

1.38 

.48 


Sec.-ft. 

3.04 

2.65 

5.01 

.27 


Nov. 30 


Feet. 
1.10 
1.02 
1.45 


Sec.-ft. 
3.33 


July 13 


30 


3.04 


14 


Dec. 2 


5.19 


Sept. 30 











Daily gage height, in feet, of Kamenehune ditch near Waimea, Kauai, for 1912. 
[P. Mokuahakea, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.30 

1.10 

.70 

.50 

.50 

.40 

.88 
.82 
.81 
.81 

.81 

.75 

.70 

1.01 

.85 


1.00 
.81 
1.00 
1.20 
1.10 

1.02 
.90 
.80 
.80 

1.00 

.72 
.60 
.60 
1.00 
.94 


1.09 
1.10 
1.40 
1.23 
1.12 

1.30 
1.30 
1.20 
1.25 
1.31 

1.30 
1.30 
1.15 
1.30 
1.10 


1.38 
1.30 
1.20 
.87 
1.52 

1.48 
1.40 
1.32 
1.50 
1.40 

1.30 
1.30 
1.24 
1.20 
1.01 


0.40 
.45 
.40 
.40 

1.10 

.80 
.80 
.80 
.82 
.80 

.80 
.80 
.80 
.80 
1.50 


0.90 
.92 
.80 
.60 
.90 

.50 
.50 
.48 
.45 
.55 

.57 
.59 
.59 
.60 
.62 


0.50 
.50 
.50 
.50 
.50 

.50 
.50 
.50 

L45 

1.28 
1.01 
.81 
1.60 
1.19 


0.40 
.40 
.50 
.40 
.50 

.40 
.41 
.48 
.70 
.65 

.60 
.70' 

1.31 
.40 

1.21 


1.10 
1.25 
1.00 

.85 
.64 

1.60 

1.55 

1.10 

.96 

.72 

.50 
.45 
.41 
.37 
.34 


0.44 
.57 
.54 
.51 
.65 

.64 

!70 
.70 

.78 

.99 
.98 
.72 
.70 
.45 


1.20 

1.00 

.85 

.80 

.60 

.50 

.50 

.49 

1.50 

1.10 

.70 
.65 
..61 
.54 
.52 


1.51 


2 


1.48 


3 


1.60 


4 


.39 


5 


.39 


6 


.40 


7 


.41 


8 


.52 


9 


.55 


10 


.49 


11 


.70 


12 


.75 


13 


.59 


14 


.70 


15.. 


.65 



48 WATER RESOURCES OF HAWAII, 1912. 

Daily gage height, in feet, of Kamenehune ditch near Waimea, Kauai, for 1912 — Continued. 



Day. 



16 
17 

18. 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 



Jan. 



0.71 
.80 
.81 

.75 

.77 

.90 

.95 

.91 

1.23 

1.10 

1.00 
1.30 

.90 
1.00 

.95 



Feb. 



0.80 
.80 
.70 
.70 
.73 

1.39 
1.54 
1.33 
1.35 
1.11 

1.10 
1.20 
1.40 



Mar. 



1.10 
1.10 
1.00 
.85 
1.30 

1.10 
.90 
.75 
.65 

1.40 

1.30 
1.00 
1.00 
.85 
.80 
1.43 



Apr. 



1.00 

1.31 

1.10 

.91 

.65 
.75 



1.00 
1.00 



May. 



1.30 

1.20 

1.20 

.58 

.51 

.50 

.50 

.90 

1.42 

1.58 

.90 

.75 

1.50 

1.40 

.93 



June. 



0.50 
.50 
.50 
.50 
.55 



.43 

.40 

1.00 

1.10 

1.09 

.97 

.93 

.62 



July. 



1.13 

1.11 

.94 

.58 

.47 

.40 
.40 
.35 
.35 
.31 

.30 
.30 
.40 
.40 
.39 
1.20 



Aug. 



1.00 
.90 
.40 
.40 



.35 

.30 

.30 

1.25 



Sept. 



0.31 
.37 
.32 
.30 
.30 

.45 
.45 
.45 
.45 
.45 

.45 
.45 
.45 
.57 



Oct. 



0.48 

.90 

1.20 

1.00 



40 



1.61 
1.20 
1.00 
.95 
1.30 
1.40 



Nov. 



1.60 
1.40 
1.25 



.70 
.70 
.65 
.50 
.40 



.40 
.40 
.84 
.40 



Dec. 



0.95 

.87 

.80 

.98 

1.00 

1.30 
.79 
.70 

.75 



.50 



.70 
.64 



MAKAWELI RIVER BASIN. 
MAKAWELI RIVER NEAR WAIMEA, KAUAI. 

Location. — About 2 miles northeast of Waimea; reached by wagon road up Maka- 

weli River. 
Records available. — October 6, 1911 3 to December 31, 1912. 
Gage. — Vertical staff gage; read daily at noon; datum unchanged. 
Channel. — Practically permanent. 

Discharge measurements. — Made from a wire suspension bridge. 
Accuracy. — Records good. 

Discharge measurements of Mahaweli River near Waimea, Kauai, in 1912. 
[Hydrographer, W. V. Hardy.] 



Date. 



Mar. 4. 

July 13 
13 
13 
13 
13 



Gage 
height. 



Feet. 
3.55 
7.40 
6.80 
5.98 
5.56 
5.40 



Dis- 
charge. 



Sec.-ft. 
29.8 
2,080 
1,360 

744 

524 

427 



Date. 



July 14 

Sept. 3( 

Dec. 3 . 

4. 

10. 



Gage 
height. 



Feet. 
3.90 
3.18 
8.35 
4.38 
3.36 



Dis- 
charge. 



Sec.-ft. 
64.1 
10.2 

2,930 
171 
18.8 



ISLAND OF KAUAI. 



49 



Daily gage height, in feet, of Makaweli River near Waimea, Kauai, for 1912. 
[Taguchi Umeichi, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


3.30 
3.32 
3.28 
3.28 
3.30 

3.28 
3.20 
3.30 
3.22 
3.28 

3.30 
3.32 
3.38 
3.28 
3.25 

3.20 
3.38 
3.40 
3.35 
3.28 

3.25 
3.22 
3.22 
3.28 
4.50 

4.30 

3.28 
3.25 
3.22 
3.22 
3.28 


3.30 

3.28 
3,22 
3.60 
3.70 

3.50 
3.25 
3.32 
3.30 
3.28 

3.55 

3.58 
3.55 
3.55 
3.52 

3.52 
3.52 
3.55 
3.55 
3.58 

3.52 

4.00 
5.70 
4.32 
4.05 

3.70 
3.55 
3.52 
3.52 


3.35 

3.58 
4.52 
4.25 
4.78 

4.92 

4.20 
4.28 
4.42 
4.58 

5.85 
5.58 
5.42 
5.35 
5.15 

4.82 
4.58 
4.35 
4.28 
4.00 

4.10 
3.82 
3.75 
3.72 
3.85 

3.78 
3.75 
3.58 
3.45 
3.38 
3.35 


3.30 
3.22 
3.22 
3.30 
3.25 

3.42 

5.50 
3.50 
5.40 
3.50 

* 3. 45 

3.40 
3.38 
3.32 
3.30 

3.30 
3.55 
3.48 
3.30 
3.32 

3.30 
3.35 
3.32 
3.50 
3.45 

3.40 
3.38 
3.38 
3.35 
3.32 


3.30 
3.35 
3.32 
3.55 
3.62 

3.50 

3.48 
3.45 
3.52 
3.42 

3.40 
3.35 
3.30 
3.58 
3.52 

3.50 
3.45 
3.40 
3.35 
3.28 

3.60 
3.52 
3.40 
3.25 
3.22 

3.20 

3.35 
3.58 
3.45 
3.42 
3.38 


3.30 
3.28 
3.22 
3.55 
3.40 

3.38 
3.28 
3.25 
3.22 
3.22 

3.35 
3.32 
3.52 
3.48 
3.38 

3.35 
3.32 
3.32 
3.35 
3.32 

3.30 

3.30 
3.38 
3.32 
3.62 

3.48 
3.45 
3.42 
3.38 
3.35 


3.40 
3.30 
3.30 
3.35 
3.40 

3.30 
3.30 
3.32 
3.30 
3.28 

3.25 
3.20 
6.50 
4.55 
3.58 

3.32 
3.35 
3.35 
3.30 
3.22 

3.20 
3.28 
3.55 
3.52 
3.48 

3.35 
3.35 
3.32 
3.38 
3.35 
3.30 


3.30 

3.28 
3.22 
3.20 
3.20 

3.48 
3.30 
3.30 
3.35 
3.32 

3.40 
3.38 
3.35 
3.35 
3.38 

3.38 
3.35 
3.32 
3.32 
3.30 

3.48 
3.35 
3.35 
3.30 
3.30 

4.58 
4.22 
4.00 
3.55 
3.40 
3.32 


3.30 
3.28 
3.30 
4.58 
4.32 

4.10 
3.80 
3.55 
3.30 
3.38 

3.32 
3.32 
3.28 
3.35 
3.35 

3.32 

3.38 
3.35 
3.30 
3.30 

3.28 
3.20 
3.35 
3.35 
3.32 

3.32 

3.30 
3.30 
3.25 
3.12 


3.20 
3.28 
3.80 
3.30 
3.15 

3.10 

3.08 
3.08 
3.05 
3.02 

3.05 
3.10 
3.10 
3.15 
3.15 

3.10 

3.45 
3.22 
3.35 
3.28 

3.25 
3.25 
3.50 
3.45 
3.30 

3.30 
3.55 
3.50 
3.45 
3.40 
3.40 


3.35 

3.32 
3.58 
3.45 
3.38 

3.43 

3.45 
3.70 
3.60 
3.38 

3.32 
3.30 
3.28 
3.28 
3.22 

3.22 

3.28 
3.25 
3.22 
3.88 

3.52 

3.38 
3.60 
3.38 
3.20 

3.20 
3.35 
3.32 
3.38 
3.35 


5.75 


2 


7.45 


3 


7.40 


4 


4.30 


5 


4.10 


6 


4.00 


7 


3.60 


8 


4.10 


9 


3.30 


10 


3.33 


11 


3.28 


12 


3.20 


13 


3.20 




3.10 


15 


3.10 


16 


3.00 


17 


3.00 


18 


3.00 




3.00 


20 


4.00 


21 


4.70 


22 


4.90 


23 


4.08 


24 


4.20 


25 


3.50 


26 


3.40 




3.38 


28 


3.38 




3.32 


30 


3.32 




3.15 







Daily discharge, in second-feet, of Makaweli River near Waimea, Kauai, for 1912. 



Day. 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec, 



14.0 
15.2 
13.2 
13.2 
14.0 

13.2 

10.0 
14.0 
10.8 
13.2 

14.0 
15.2 
18.8 
13.2 
12.0 

10.0 

18.8 
20.0 
17.0 
13.2 

12.0 
10.8 
10.8 
13.2 
190.0 

143.0 
13.2 
12.0 
10.8 
10.8 
13.2 



14.0 
13.2 
10.8 
34.0 
44.0 

26.0 
12.0 
15.2 
14.0 
13.2 

30.0 
32.4 
30.0 
30.0 
27.6 

27.6 
27.6 
30.0 
30.0 
32.4 

27.6 

84.0 
595.0 
148.0 

93.0 

44.0 
30.0 
27.6 
27.6 



17.0 

32.4 

195.0 

132.0 

260.0 

298.0- 
122.0 
139.0 
171.0 
209.0 

674.0 
537.0 
466.0 
438.0 
366.0 

270.0 
209.0 
154.0 
139.0 
84.0 

102.0 
57.8 
49.5 
46.2 
62.0 

52.8 
49.5 
32.4 
23.0 
18.8 
17.0 



14.0 
10.8 
10.8 
14.0 
12.0 

21.2 
500.0 

26.0 
458.0 

26.0 

23.0 

20.0 
18.8 
15.2 
14.0 

14.0 
30.0 
24.8 
14.0 
15.2 

14.0 
17.0 
15.2 
26.0 
23.0 

20.0 

18.8 
18.8 
17.0 
15.2 



14.0 
17.0 
15.2 
30.0 
36.0 

26.0 
24.8 
23.0 
27.6 
21.2 

20.0 
17.0 
14.0 
32.4 
27.6 

26.0 
23.0 
20.0 
17.0 
13.2 

34.0 
27.6 
20.0 
12.0 
10.8 

10.0 
17.0 
32.4 
23.0 
21.2 
18.8 



14.0 
13.2 
10.8 
30.0 
20.0 

18.8 
13.2 
12.0 
10.8 
10.8 

17.0 
15.2 
27.6 
24.8 
18.8 

17.0 
15.2 
15.2 
17.0 
15.2 

14.0 
14.0 
18.8 
15.2 
36.0 

24.8 
23.0 
21.2 
18.8 
17.0 



20.0 
14.0 
14.0 
17.0 
20.0 

14.0 
14.0 
15.2 
14.0 
13.2 

12.0 

10.0 

1,110.0 

202.0 

32.4 

15.2 
17.0 
17.0 
14.0 
10.8 

10.0 
13.2 
30.0 
27.6 
24.8 

17.0 
17.0 
15.2 
18.8 
17.0 
14.0 



14.0 
13.2 
10.8 
10.0 
10.0 

24.8 
14.0 
14.0 
17.0 
15.2 

20.0 

18.8 
17.0 
17.0 
18.8 

18.8 
17.0 
15.2 
15.2 
14.0 

24.8 
17.0 
17.0 
14.0 
14.0 

209.0 
126.0 
84.0 
30.0 
20.0 
15.2 



14.0 

13.2 

14.0 

209.0 

148.0 

102.0 
55.0 
30.0 
14.0 
18.8 

15.2 
15.2 
13.2 
17.0 
17.0 

15.2 
18.8 
17.0 
14.0 
14.0 

13.2 
10.0 
17.0 
17.0 
15.2 

15.2 
14.0 
14.0 
12.0 



10.0 
13.2 
55.0 
14.0 
8.0 

6.0 
5.4 
5.4 
4.5 
3.6 

4.5 
6.0 
6.0 
8.0 
8.0 

6.0 
23.0 
10.8 
17.0 
13.2 

12.0 
12.0 
26.0 
23.0 
14.0 

14.0 
30.0 
26.0 
23.0 
20.0 
20.0 



17.0 
15.2 
32.4 
23.0 
18.8 

21.8 
23.0 
44.0 
34.0 
18.8 

15.2 
14.0 
13.2 
13.2 
10.8 

10.8 
13.2 
12.0 
10.8 
66.2 

27.6 
18.8 
34.0 
18.8 
10.0 

10.0 
17.0 
15.2 
18.8 
17.0 



621.0 

2, 020. 

1, 970. 

143.0 

102.0 

84.0 
34.0 
102.0 
14.0 
15.8 

13.2 
10.0 
10.0 
6.0 
6.0 

3.0 
3.0 
3.0 
3.0 
84.0 

239.0 
292.0 

98.4 
122.0 

26.0 

20.0 
18.8 
18.8 
15.2 
15.2 
8.0 



14694°— wsp 336—14- 



50 WATER RESOURCES OP HAWAII, 1912. 

Monthly discharge of Makaweli River near Waimea, Kauai, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



190.0 

595.0 

674.0 

500.0 

36.0 

36.0 

1, 110. 

209.0 

209.0 

55.0 

66.2 

2,020.0 



10.0 
10.8 
17.0 
10.8 
10.0 
10.8 
10.0 
10.0 
10.0 

3.6 
10.0 

3.0 



23.3 
54.2 

175.0 
4§.9 
21.7 
18.0 
58.1 
28.6 
30.3 
14.4 
20.5 

198.0 



2,020.0 



3.0 



57.8 



1,430 
3,120 

10,800 
2,910 
1,330 
1,070 
3,570 
1,760 
1,800 
885 
1,220 

12, 200 



42, 100 



HALEKUA STREAM NEAR WAIMEA, KAUAI. 

Location. — About 12 miles northeast of Waimea; station reached by saddle horse 
over trail from Waimea via Gay's mountain house; two days required for round 
trip; a guide is necessary. 

Records available. — October 11, 1912, to December 31, 1912. 

Gage. — Barrett & Lawrence automatic register. 

Channel. — Practically permanent. 

Discharge measurements. — Measurements are made by wading. 

Cooperation. — Station maintained in cooperation with Hawaiian Sugar Co. 

Discharge measurements of HaleTcua Stream near Waimea, Kauai, in 1912. 



Hydrographer. 



Gage 
height. 



Dis- 
charge. 



Oct. 12 
Nov. 18 



W. V. Hardy 
do 



Feet. 
3.52 



Sec.-ft. 
0.48 
1.50 



OLOKELE DITCH AT TUNNEL NO. 12, NEAR MAKAWELI, KAUAI. 

Location. — About 12 miles northeast of Waimea ; about 9 miles, straight-line 
measurement, northeast of Makaweli; and about 2 miles below intake. 

Records available. — January 1, 1910, to December 31, 1912. 

Gage. — A vertical staff gage; datum unchanged. 

Channel. — Permanent. 

Discharge measurements. — Made from a plank which is thrown across ditch when 
measurement is taken. 

Accuracy. — Very good. 

Cooperation. — Gage is the property of the Hawaiian Sugar Co., which furnishes gage 
heights at the end of the year. 

Discharge measurements of Olokele ditch at tunnel No. 12, near Makaweli, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Feb. 10 


W. V. Hardy ' 


Feet. 
2.72 
3.01 
2.04 


Sec.-ft. 
69.1 




. . .do 


78.8 


Nov. 28 


. . .do 


45.3 









ISLAND OF KAUAI. 



51 



Daily gage height, in feet, ofOlohele ditch at tunnel No. 12, near Mahaweli, Kauai, for 1912. 

[Hawaiian Sugar Co., observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


2.40 
2.40 
2.60 
2.40 
2.50 

2.90 
2.60 
3.50 
3.50 
2.70 

2.50 
2.40 
3.10 
3.20 
2.50 

2.40 
2.40 
2.30 
2.30 
2.30 

2.50 
2.40 
2.40 
2.80 
2.50 

2.40 
2.40 
2.40 
2.30 
2.30 
2.80 


2.40 
-2.80 
2.50 
2.60 
2.40 

2.30 
2.30 
2.30 
2.30 
2.51 

2.60 
2.30 
2.30 
2.30 
2.20 

2.20 
2.20 
2.20 
2.20 
2.20 

2.40 
3.50 
3.50 
3.50 
3.00 

2.60 
2.80 
2.60 
2.40 


3.10 
2.90 
3.50 
3.00 
2.50 

3.00 
3.22 
2.60 
3.50 
3.20 

3.50 
3.50 
3.50 
3.30 
2.70 

2.50 
2.40 
2.80 
2.40 
2.40 

2.50 

2.50 
2.30 
2.20 
3.50 

2.50 
2.30 
2.90 
2.40 
2.30 
2.60 


2.40 
2.50 
2.30 
2.60 
2.40 

2.40 
3.50 
3.30 
3.50 
3.00 

3.00 
2.40 
2.50 
3.40 
2.30 

2.50 
2.40 
3.20 
2.40 
2.80 

2.40 
2.40 
2.70 
2.40 
2.90 

3.50 
2.40 
2.50 
2.30 
2.20 


2.20 
2.40 
3.50 
3.50 
3.50 

2.50 
2.30 
3.50 
2.40 
2.20 

2.20 
2.10 
2.20 
3.50 
3.50 

2.50 
2.40 
2.20 
2.10 
2.30 

2.60 
3.50 
3.50 
3.50 
2.50 

2.30 
3.50 
3.50 
3.50 
2.90 
2.40 


2.30 
2.20 
2.10 
2.40 
2.30 

2.20 
2.10 
2.10 
2.70 
2.40 

2.20 
2.10 
3.20 
3.50 
2.50 

2.90 
2.20 
2.90 
3.50 
2.50 

3.50 
3.30 
3.10 
3.50 
2.60 

2.30 
2.50 
2.20 
2.20 
2.10 


2.10 
2.20 
2.10 
2.50 
2.10 

2.50 
3.50 
2.40 
2.10 
2.70 

3.50 
2.70 
3.10 
3.30 
3.50 

2.50 
3.50 
2.60 
2.40 
2.20 

2.50 
2.60 
3.50 
3.50 
2.50 

3.50 

2.40 
2.20 
2.30 
2.50 
2.20 


2.20 
2.10 
2.10 
2.00 
2.10 

2.10 
2.10 
3.50 
3.20 
2.40 

3.20 
2.40 
2.50 
3.50 
3.30 

2.30 
2.30 
2.10 
2.10 
2.10 

2.40 
2.30 
2.30 
2.30 
2.30 

2.30 
3.50 
2.90 
2.40 
3.50 
3.40 


2.80 
3.50 
3.40 
3.20 
2.50 

3.50 
3.50 
2.70 
2.40 
2.30 

2.20 
2.30 
2.20 
2.20 
2.10 

2.10 
2.90 
2.20 
2.40 
2.20 

2.30 
3.40 
2.20 
2.10 
2.00 

2.00 
2.00 
2.00 
2.20 
3.50 


2.30 
2.50 
3.50 
2.20 
2.50 

2.60 
2.30 
3.20 
2.90 
3.40 

2.20 
2.20 
2.10 
2.10 
2.10 

2.40 
2.20 
2.60 
3.50 
2.60 

3.50 
3.30 
3.50 
2.40 
2.20 

3.50 
3.30 
3.50 
3.10 
3.40 
3.00 


2.90 
2.30 
2.40 
2.60 
3.80 

2.90 

2.90 
2.30 
3.80 
2.70 

2.40 
2.20 
2.20 
2.10 
2.10 

2.10 
2.10 
2.40 
3.60 
2.30 

. 3.70 
3.00 
2.70 
2.50 
2.20 

2.20 
2.10 
2.02 
3.70 
2.60 


3.80 


2 


3.60 


3 


3.70 


4 


3.00 


5 


3.50 


6 


2.70 


7 


2.60 


8 


3.70 


9 


2.40 


10 


2.60 


11 


2.40 


12 


2.20 


13 


2.10 




2.20 


15 


2.30 


16 


2.80 


17 


2.10 


18 


2.20 


19 


2.20 


20 


3.70 


21 


3.00 


22 


3.30 


23 


3.70 




3.70 


25.. 


3.70 


26 


3.70 




2.90 


28 


3.00 




2.50 


30 


3.00 




2.40 







in second-feet, of Olohele ditch at tunnel No. 12, near Mahaweli, Kauai, 
for 1912. 



Jan. 



Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 



90 



57 



61 



57 



94 



90 



75 
54 
57 
64 
110 

75 
75 
54 
110 



57 
50 
50 
47 

47 

47 
47 
57 
102 
54 

106 
79 
68 
61 
50 

50 
47 
44 
106 
64 



110 
102 
106 
79 



64 
106 
57 
64 

57 
50 
47 
50 
54 

71 
47 
50 
50 
106 

79 
90 
106 
106 
106 

106 
75 
79 
61 
79 
57 



52 



Monthly discharge ofOlokele ditch at tunnel iVb. 12, near Makaweli, Kauai, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



110 
110 



110 



44 



63.9 
62.0 
72.7 
67.5 
72.0 
64.2 
67.8 
63.2 
62.7 
71.2 
65.8 
76.8 



67.5 



3,930 
3,570 
4,470 
4,020 
4,430 
3,820 
4,170 
3,890 
3,730 
4,380 
3,920 
4,720 



49,000 



OLOKELE DITCH AT WEIR NEAR WAIMEA, EA.UAI. 

Location. — About 8 miles northeast of Waimea and 1 mile east of Camp 9. 

Records available. — January 1 to December 31, 1912. 

Gage. — A vertical staff gage spiked to the right side of ditch. Zero on gage is equal 

to crest of weir. 
Discharge measurements. — Made from plank over ditch and by a 12-foot weir with 

end contractions. 
Accuracy. — Conditions and records are good. 
Cooperation. — Station is the property of and records are furnished by the Hawaiian 

Sugar Co. 

Daily discharge, in second-feet, ofOlohele ditch at weir near Waimea, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


56.6 
56.6 
64.4 
60.1 
79.6 

82.9 
64.4 
74.9 
74.9 
81.2 

60.1 
57.3 
70.3 
68.2 
65.9 

55.8 
55.8 
54.5 
53.1 
53.1 

61.5 
55.8 
54.5 
81.2 
61.5 

55.8 
54.5 
54.5 
53.1 
53.1 
71.9 


60.1 
63.0 
63.0 
70.3 
51.7 

49.0 

47.7 
47.7 
46.4 
46.4 

67.4 
57.3 
51.7 
51.0 
50.4 

50.4 
50.4 
50.4 
50.4 
50.4 

53.1 
68.9 
92.5 
94.2 
78.0 

70.3 
68.9 
65.9 
57.3 


58.7 
82.9 
74.9 
87.6 
61.5 

70.3 
79.6 
73.4 
78.0 
87.6 

92.5 
92.5 
92.5 
92.5 
70.3 

64.4 
57.3 
65.9 
58.7 
54.5 

64.4 
57.3 
57.3 
50.4 
71.9 

74.9 
54.5 
60.1 
58.7 
54.5 
64.4 


63.0 
64.4 
54.5 
51.7 
67.4 

57.3 
87.6 
92.5 
87.6 
87.6 

78.0 
61.5 
63.0 
68.9 
57.3 

54.5 
61.5 
80.4 
64.4 
55.8 

70.3 
55.8 
64.4 
64.4 
53.1 

82.9 
64.4 
61.5 
58.7 
50.4 


47.7 
49.0 
58.7 
76.5 
89.3 

67.4 
55.8 
60.1 
76.5 
50.4 

47.7 
46.4 
46.4 
50.4 
90.9 

84.5 
54.5 
50.4 
47.7 
51.7 

51.7 
79.6 
71.9 
74.9 
78.0 

58.7 
70.3 
92.5 
94.2 
84.5 
58.7 


53.1 
50.4 

47.7 
50.4 
58.7 

50.4 
47.7 
46.4 
55.8 
61.5 

46.4 
47.7 
50.4 
89.3 
65.9 

67.4 
57.3 
50.4 
70.3 
70.3 

64.4 
89.3 
64.4 
76.5 
84.5 

55.8 
60.1 
53.1 
47.7 
46.4 


46.4 

58.7 
50.4 
46.4 
49.0 

76.5 
64.4 
76.5 
50.4 
60.1 

68.9 
86.0 
61.5 
89.3 
87.6 

74.9 
64.4 
81.2 
58.7 
53.1 

53.1 
70.3 
65.9 
63.0 
70.3 

57.3 
73.4 
51.7 
55.8 
55.8 
54.5 


51.7 
46.4 
45.1 
44.4 
43.8 

50.4 
49.0 
80.4 
76.5 
74.9 

58.7 
63.0 
53.1 
61.5 
92.5 

70.3 
51.0 

47.7 
46.4 
45.1 

46.4 
53.1 
64.4 

58.7 
67.4 

51.7 
78.0 
89.3 
67.4 
74.9 
91.7 


81.2 
82.9 
90.9 
84.5 
65.9 

70.3 
92.5 
70.3 
63.0 
53.1 

50.4 
55.2 
54.5 

47.7 
45.1 

45.1 
64.4 
61.5 

47.7 
51.7 

51.7 
51.7 
61.5 
45.1 
44.4 

41.2 

42.5 
42.5 
49.0 
62.2 


64.4 
65.9 
57.3 
64.4 
51.7 

51.7 
51.7 
64.4 
64.4 
57.3 

56.6 
51.7 
47.7 
46.4 
49.0 

50.4 
50.4 
79.6 
76.5 
82.9 

74.9 
90.9 
76.5 
64.4 
51.7 

73.4 
91.7 
67.4 
89.3 
61.5 
76.5 


79.6 
56.6 
50.4 
64.4 
58.7 

76.5 
70.3 
55.8 
81.2 
78.0 

58.7 
53.1 
49.0 
46.4 
45.1 

46.4 
46.4 
46.4 
78.0 
60.8 

78.0 
74.9 
81.2 
78.0 
51.7 

46.4 
45.1 
43.8 
58.7 
76.5 


86.0 


2 


92.5 


3 


81.2 


4 


60.1 


5 


84.5 


6 


73.4 


7 


60.1 


8 


70.3 


9 


70.3 


10 


65.9 


11 


64.4 


12 


51.7 


13 


47.7 


14 


50.4 


15 


50.4 


16 


73.4 


17 


53.1 


18 


46.4 


19 


46.4 


20 


70.3 


21 


76.5 


22 


90.9 


23 


94.2 


24 


95.8 


25 


95.8 


26 


94.2 


27 


81.2 


28 


71.9 


29 


63.0 


30 


58.7 


31 


60.1 







Note.— Discharge computed from Francis's formula, Q=3,33 (L— 2 H) H* when L=12 feet. 



ISLAND OF KAUAI. 53 

Monthly discharge of Olokele ditch at weir near Waimea, Kauai, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 

(total in 

acre-feet). 


Maximum. 


Minimum. 


Mean. 


January 


82.9 
94.2 
92.5 
92.5 
94.2 
89.3 
89.3 
92.5 
92.5 
91.7 
81.2 
95.8 


53.1 
46.4 
50.4 
50.4 
46.4 
46.4 
46.4 
43.8 
41.2 
46.4 
43.8 
46.4 


62.8 
59.3 
69.8 
66.2 
65.1 
59.3 
63.7 
61.1 
59.0 
64.6 
61.2 
70.3 


3,860 


February 


3,420 


March 


4,290 




3,940 
4,000 
3,530 


May 




July 


3,920 




3,760 


September 


3,510 


October 


3,970 


November 


3,640 


December 


4,320 






The year 


95.8 


41.2 


63.6 


46, 000 







POOWAIOMAHAIHAI DITCH NEAR WAIMEA, KAUAI. 

Location. — About 2 miles northeast of Waimea, 250 feet below intake and 110 feet 

below bridge station on Makaweli River. 
Records available.— October 27, 1911, to December 31, 1912. 
Gage.— A vertical staff gage spiked to tree on left bank of ditch; read at noon each 

day. 
Channel. — Permanent. 

Discharge measurements. — Made from timber bridge 15 feet above gage. 
Accuracy. — Good . 

Discharge measurements of Poowaiomahaihai ditch near Waimea, Kauai, in 1912. 
[Hydrographer, W. V. Hardy.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Mar. 4 


1.12 
1.58 
1.12 
1.86 


9.17 
12.4 

5.62 
14.7 


Dec. 3 


3.05 
1.36 
1.21 


47.3 


July 14 


4 

10 


7.23 


Sept. 30 


5.52 


Nov. 30 











Daily gage height, in feet, of Poowaiomahaihai ditch near Waimea, Kauai, for 1912. 
[Taguchi Umeichi, observer.] 



Day. 



1. 
2. 
3. 
4. 
5. 

6. 

7. 
8. 
9. 
10. 

11. 
12. 
13 
14. 
15. 

16 
17 

18. 
19 
20 



Jan. 



1.20 
1.21 
1.19 
1.19 
1.20 

1.18 
1.17 
1.20 
1.21 
1.30 

1.22 
1.20 
1.20 
1.24 
1.10 

1.00 
1.10 
1.25 
1.15 
1.12 



Feb. 



1.00 



1.20 
1.21 

1.10 

.99 

1.08 

1.00 



1.08 
1.12 
1.08 
1.08 



.98 



Mar. 



0.99 
1.19 
1.20 
1.10 
1.29 

1.35 
1.20 
1.10 
1.40 
1.52 

1.78 
1.65 
1.60 
1.53 
1.50 

1.48 
1.35 
1.30 
1.27 
1.23 



Apr. 



0.90 
.80 
.80 
.80 

.78 



.90 
1.50 
1.00 
L.40 
LOO 

.90 
.90 



1.10 

1.00 

.90 

.90 



May. 



0.90 
1.00 
.90 
1.10 
1.20 

1.10 
1.00 

.90 
1.20 

.90 

.90 

.80 

.70 

1.10 

1.10 

1.00 
.90 
.90 



June. 



0.80 

.70 

.70 

1.20 

1.00 

.80 
.70 
.70 
.70 
.70 



1.20 
1.10 
1.00 



.80 



July. 



1.20 
1.00 
1.00 
1.10 
1.20 

.90 
.90 
1.00 
.90 
.90 

1.50 
1.40 
2.30 
1.57 
1.20 

1.10 

1.10 

1.00 

.90 

.80 



Aug. 



1.00 
.90 
.80 
.80 

1.00 

1.20 
1.00 
1.10 
1.10 
1.20 

1.20 
1.10 
1.00 
1.10 
1.10 

1.20 
1.20 
1.20 
1.20 
1.00 



Sept. 



1.00 
.90 
1.00 
1.60 
1.50 



1.20 
1.20 
1.00 
1.10 
1.10 



1.10 
1.10 
1.10 
1.00 
1.00 



Oct. 



1.10 
1.10 
1.60 
1.30 
1.20 

1.10 
1.10 
1.10 
1.00 
1.00 



1.00 
1.30 
1.25 
1.30 
1.20 



Nov. 



1.20 
1.10 
1.40 
1.30 
1.20 

1.42 
1.30 
1.60 
1.50 
1.20 

1.20 
1.10 
1.10 
1.10 
1.00 

1.00 
1.10 
1.00 
1.10 
1.70 



Dec. 



3.10 
3.40 
3.22 
1.40 
1.30 

1.32 
1.20 
1.30 



1.20 
1.10 
1.10 
1.00 
1.00 

.90 
.90 
.90 
.90 
1.30 



54 WATER RESOURCES OF HAWAII, 1912. 

Daily gage height, in feet, of Poowaiomahaihai ditch near Waimea, Kauai, for 1912 — Con. 
Day. 



21 
22 
23 
21 

25 

26 
27 
28 
29 
30 
31 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


1.11 


0.97 


1.19 


0.90 


1.30 


0.70 


0.80 


1.00 


0.90 


1.20 


1.40 


1.10 


1.20 


1.14 


1.00 


1.20 


.70 


.80 


1.30 


.80 


1.20 


1.20 


1.00 


1.40 


1.12 


.90 


1.10 


.90 


1.20 


1.30 


1.10 


1.40 


1.50 


1.10 


1.23 


1.10 


1.10 


.80 


.80 


1.10 


1.20 


1.10 


1.30 


1.20 


1.30 


1.10 


.90 


1.00 


.80 


1.30 


1.00 


1.20 


1.10 


1.20 


1.10 


1.25 


1.09 


.95 


1.00 


.70 


1.10 


.90 


1.50 


1.00 


1.20 


1.10 


1.00 


.98 


.92 


.90 


.80 


1.00 


.90 


1.40 


1.20 


1.60 


1.20 


.98 


.97 


.92 


.90 


1.20 


.80 


.90 


1.40 


1.12 


1.40 


1.20 


.97 


.97 


.83 


.80 


1.00 


1.00 


.90 


1.30 


1.10 


1.30 


1.30 


.97 




.81 


.70 


.90 


.90 


.80 


1.20 


1.10 


1.20 


1.58 


1.00 




.80 




.90 




.80 


1.30 




1.20 





Daily discharge, in second-feet, of 


Poowaiomahaihai ditch near W 


aimea, 


Kauai, for 


1912. 


Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


6.2 
6.3 
6.1 
6.1 
6.2 

6.0 
5.9 
6.2 
6.3 
7.3 

6.4 
6.2 
6.2 
6.6 
5.2 

4.3 
5.2 
6.8 

5.7 
5.4 

5.3 
5.2 
4.3 
5.2 
7.3 

6.8 
4.3 
4.1 
4.1 
4.1 
4.3 


4.3 
4.1 
4.1 
6.2 
6.3 

5.2 
4.2 
5.0 
4.3 
4.1 

5.0 
5.4 
5.0 
5.0 
4.2 

4.1 
4.1 
4.2 
4.1 
4.2 

4.1 
6.2 
8.5 
6.5 
5.2 

5.1 
4.1 
4.1 
4.1 


4.2 
6.1 
6.2 
5.2 
7.2 

7.9 
6.2 
5.2 

8.5 
10.1 

14.2 
12.0 
11.2 
10.2 
9.8 

9.5 
7.9 
7.3 
7.0 
6.5 

6.1 
5.6 
5.4 
5.2 
3.5 

3.9 
3.7 
3.7 
3.0 
2.9 
2.8 


3.5 
2.8 
2.8 

2.8 
2.7 

3.5 
9.8 
4.3 

8.5 
4.3 

3.5 
3.5 
3.4 
3.4 

2.8 

2.8 
5.2 
4.3 
3.5 
3.5 

3.5 
4.3 
3.5 
5.2 
4.3 

4.3 
3.5 
3.5 
2.8 
2.3 


3.5 
4.3 
3.5 
5.2 
6.2 

5.2 
4.3 
3.5 
6.2 
3.5 

3.5 
2.8 
2.3 
5.2 
5.2 

4.3 
3.5 
3.5 
2.8 
2.3 

7.3 
6.2 

5.2 

2.8 
2.8 

2.3 
2.8 
6.2 
4.3 
3.5 
3.5 


2.8 
2.3 
2.3 
6.2 
4.3 

2.8 
2.3 
2.3 
2.3 
2.3 

2.8 
2.8 
6.2 
5.2 
4.3 

2.8 
2.8 
2.8 
2.8 
2.8 

2.3 
2.3 
3.5 

2.8 
7.3 

5.2 
4.3 
2.8 
4.3 
3.5 


6.2 
4.3 
4.3 
5.2 
6.2 

3.5 
3.5 
4.3 
3.5 
3.5 

9.8 
8.5 
25.0 
10.8 
6.2 

5.2 
5.2 
4.3 
3.5 
2.8 

2.8 
2.8 
6.2 
5.2 
4.3 

3.5 
3.5 
3.5 

3.5 

2.8 
2.8 


4.3 
3.5 

2.8 
2.8 
4.3 

6.2 
4.3 
5.2 
5.2 
6.2 

6.2 
5.2 
4.3 
5.2 
5.2 

6.2 
6.2 
6.2 
6.2 
4.3 

4.3 
7.3 
7.3 
6.2 
6.2 

9.8 
8.5 
8.5 
7.3 
6.2 
7.3 


4.3 

3.5 

4.3 

11.2 

9.8 

8.5 
7.3 
7.3 
6.2 
7.3 

6.2 
6.2 
4.3 
5.2 
5.2 

5.2 
5.2 
5.2 
4.3 
4.3 

3.5 

2.8 
5.2 
5.2 
5.2 

4.3 
6.2 

5.4 
5.2 
5.2 


5.2 
5.2 
11.2 
7.3 
6.2 

5.2 
5.2 
5.2 
4.3 
4.3 

4.3 
5.2 
5.2 
6.2 
6.2 

4.3 
7.3 
6.8 
7.3 
6.2 

6.2 
6.2 
8.5 
7.3 
6.2 

6.2 
11.2 

8.5 
7.3 
6.2 
6.2 


6.2 
5.2 
8.5 
7.3 
6.2 

8.8 
7.3 
11.2 
9.8 
6.2 

6.2 
5.2 
5.2 
5.2 
4.3 

4.3 
5.2 
4.3 
5.2 
12.8 

8.5 
6.2 
9.8 
6.2 
5.2 

5.2 
6.2 

6.2 

7.3 

10.8 


49.0 


2 


60.0 


3 


52.8 


4 


8.5 


5 


7.3 


6 


7.5 


7 


6.2 


8 


7.3 


9 


6.2 


10 


6.2 


11 


6.2 


12 


5.2 


13 


5.2 


14 


4.3 


15 


4.3 


16 


3.5 


17 


3.5 


18 


3.5 


19 


3.5 


20 


7.3 


21 


36.0 


22 


27.0 


23 


8.5 


24 


9.8 


25 


11.2 


26.. 


7.3 


27 


7.3 


28 

29 


7.3 
6.2 


30 


6.2 


31 


4.3 







Monthly discharge of Poowaiomahaihai ditch near Waimea 


, Kauai, 


for 1912. 




Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 




7.3 

8.5 

14.2 

9.8 

7.3 

7.3 

25.0 

9.8 

11.2 

11.2 

12.8 

60.0 


4.1 
4.1 
2.8 
2.3 
2.3 
2.3 
2.8 
2.8 
2.8 
4.3 
4.3 
3.5 


5.66 
4.86 
6.72 
3.94 
4.12 
3.45 
5.38 
5.77 
5.64 
6.40 
6.87 
12.50 


348 
280 
413 
234 
253 
205 
331 
355 
336 
394 
409 
769 


C. 




C. 




c. 




c. 




c. 




c. 


July 


B. 




B. 




B. 




B. 




A. 




A. 








60.0 


2.3 


5.96 


4,330 









ISLAND OF KAUAI. 



55 



HANAPEPE RIVER BASIN. 
EAST BRANCH OF HANAPEPE RIVER i AT HANAPEPE FALLS, NEAR ELEELE, KAUAI. 

Location. — About 8 miles north of Eleele and a short distance below Hanapepe Falls. 
Records available. — November 22, 1911, to December 31, 1912. 
Gage. — Vertical staff; datum unchanged. 

Discharge measurements. — Made by wading on crest of masonry dam; crest 3 feet 
wide and 75 feet long. 

Daily gage height, in feet, of East Branch of Hanapepe River at Hanapepe Falls, near 

Eleele, Kauai, for 1912. 











[S.W. 


Holmer 


, observer.] 












Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


























2 


















0.20 
.05 






0.85 


3 






















1.18 


4 








0.02 


0.55 


0.03 












5 


0.35 














0.16 


.05 


6 
















.22 




.01 


7 
















0.02 








g 


.10 
.10 






.25 

.20 
.50 


.05 










.45 
.05 




9 




0.10 






.28 






0.5 


10 














11 . 






1.00 
.35 
.60 
.22 
.15 

.05 






0.40 












12 






















13 










.32 


.20 












14 


.18 






.13 
.09 


.50 
.02 










15 


.03 


.34 

.17 
.42 
.10 

.05 










16 






.12 








17 












0.15 






18 


















.05 




19 












.15 






.24 




20 








.25 












21 










.04 








.38 


"""."38" 

.20 


.95 


22 










.02 
.05 
.22 




.01 






23 


.22 

.16 
.20 

.20 


0.50 














.70 


24 








.10 








.76 


25 






.70 












26 










.02 






.70 




.20 










.70 
.05 




.05 




.10 


28... 














.05 




.06 


















30 














.65 
.13 




.02 
.05 


.20 


.02 
















.03 





















Note 
heights on week days indicates that all the water was diverted at the dam 



Gage heights represent water flowing over dam; station not visited Sundays, but lack of gage 
die: 



HANAPEPE RIVER AT KOTTLA, NEAR ELEELE, KAUAI. 

Location. — About 5 miles north of Eleele. 

Records available.— August 18, 1910, to December 31, 1912. 

Drainage area. — 12.63 square miles. 

Gage. — Friez automatic register; datum unchanged. 

Channel. — Fairly permanent. 

Discharge measurements. — Made from cable and car. 

Accuracy. — Records good. 

Discharge measurements of Hanapepe River at Koula, near Eleele, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 6 


W. V. Hardy 


Feet. 
1.06 
1.20 


Sec.-ft. 
17.8 


Dec. 16 


do ..; 


20.9 









i Described in Water-Supply Paper 318, p. 77, as Hanapepe River at Hanapepe Falls, near Eleele 
Kauai. 



56 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, of Hanapepe River at Koula, near Eleele, Kauai, for 1912. 

[S. W. Holmer, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.10 
1.12 
1.18 
1.25 
1.67 

1.21 
1.20 
1.52 
1.47 
1.21 

1.15 
1.19 
1.49 
1.64 
1.17 

1.15 
1.10 
1.09 
1.07 
1.14 

1.05 
1.05 
1.50 
1.52 
1.30 

1.35 
1.35 
1.33 
1.09 
1.18 
1.18 


1.05 
1.05 
1.05 
1.07 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 

1.08 
1.31 
2.55 
1.88 
1.25 

1.13 
1.02 
1.00 
1.06 


1.07 
1.08 
1.20 
1.07 
1.00 

1.05 
1.15 
1.06 
1.91 
1.57 

3.00 

2.35 
2.80 
1.90 
1.50 

1.27 
1.25 
1.35 
1.10 
1.10 

1.10 
1.10 
1.08 
1.12 
1.55 

1.13 
1.05 
1.06 
1.05 
1.05 
1.07 


1.05 
1.00 
1.00 
1.20 
1.10 

1.49 
2.70 
1.75 
2.27 
, 1.47 

1.35 
1.15 
1.11 
1.20 
1.08 

1.18 
1.60 
1.28 
1.05 
1.42 

1.06 
1.18 
1.27 
1.10 
1.50 

1.31 
1.15 
1.10 
1.05 
1.05 


1.05 
1.05 
1.46 
1.64 
1.50 

1.14 
1.07 
1.36 
1.07 
1.06 

1.08 
1.05 
1.07 
1.46 
1.80 

1.22 
1.08 
1.05 
1.08 
1.07 

1.14 
1.34 
1.37 
1.55 
1.24 

1.18 
1.81 

2.82 
2.07 
1.52 
1.08 


1.15 
1.10 
1.11 
1.36 
1.38 

1.21 
1.11 
1.13 
1.21 
1.07 

1.05 
1.06 
1.65 
1.37 

1.28 

1.20 
1.08 
1.18 
1.34 
1.12 

1.57 
1.32 
1.25 
1.78 
1.23 

1.17 
1.22 
1.11 
1.09 
1.05 


1.07 
1.05 
1.04- 
1.02 
1.18 

1.11 
1.34 
1.04 
1.10 
1.38 

1.92 
1.21 
2.74 
2.48 
2.05 

1.52 
2.44 
1.58 
1.36 
1.20 

1.37 
1.04 
1.03 
1.54 
1.19 

1.39 
1.16 
1.12 
1.19 
1.18 
1.22 


1.19 
1.07 
1.09 
1.23 
1.21 

1.19 
1.22 
1.49 
1.55 
1.11 

1.10 
1.06 
1.04 
2.19 
1.55 

1.19 
1.10 
1.05 
1.07 
1.07 

1.14 
1.38 
1.24 
1.64 
1.38 

1.55 
2.58 
1.58 
1.47 
2.50 
1.81 


1.82 
1.81 
1.71 
1.40 
1.28 

2.48 
1.61 
1.42 
1.34 

1.18 

1.24 
1.30 
1.19 
1.17 
1.14 

1.19 
1.18 
1.04 
1.14 
1.11 

1.12 
1.29 
1.13 
1.08 
1.06 

1.04 
1.03 
1.07 
1.15 
1.19 


1.23 
1.12 
1.38 
1.10 
1.19 

1.20 
1.19 
1.37 
1.19 
1.20 

1.13 
1.17 
1.12 
1.13 

1.11 

1.12 
1.41 
1.42 
1.98 
1.52 

2.21 
1.68 
1.57 
1.21 
1.59 

2.53 
1.75 
1.81 
1.56 
1.48 
1.52 


1.29 
1.18 
1.16 
1.15 
1.61 

1.26 
1.20 
1.96 
2.03 
1.31 

1.18 
1.12 
1.10 
1.09 
1.10 

1.10 
1.09 
1.30 
1.29 
1.16 

1.36 
1.51 
1.69 
1.25 
1.17 

1.10 
1.07 
1.09 
1.41 
1.42 


1 71 


2. 


4 18 


3 


4 70 


4 


2.38 


5 


1.61 


6 


1 39 


7 


1 29 


8 


2.05 


9 


1.50 


10 


1.31 


11 


1.22 


12 


1 10 


13 


1 12 


14 


1.12 




1.09 




1.29 


17 


1 10 




1 12 


19 


1.15 


20 


1.83 


21 


2.79 


22 


2.98 


23 


2 82 


24 


3 81 




2.87 




1.89 


27 


1 61 




1.44 
1 35 


29 




1 29 


31 


1.27 







Daily discharge, in second-feet, of Hanapepe River at Koula, near Eleele, Kauai, for 1912. 



Day. 



1 
2 
3 
4 
5 

6 
7 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 
18 
19 
20 

21 
22 
23 
24 
25 

26 
27 
28. 
29. 
30. 
31. 



Jan. 



18.0 
19.0 
22.0 
26.5 
68.1 

23.7 

23.0 
50.2 
45.0 
23.7 

20.5 
22.5 
47.0 
64.2 
21.5 

20.5 
18.0 
17.5 
16.5 
20.0 

15.5 
15.5 
48.0 
50.2 
30.0 

34.0 
34.0 
32.4 
17.5 
22.0 
22.0 



Feb. 



15.5 
15.5 
15.5 
16.5 
13.0 

13.0 
13.0 
13.0 
13.0 
13.0 

13.0 
13.0 
13.0 
13.0 
13.0 

13.0 
13.0 
13.0 
13.0 
13.0 

17.0 
30.8 
225.0 
100.0 
26.5 

19.5 
14.0 
13.0 
16.0 



Mar 



16.5 
17.0 
23.0 
16.5 
13.0 

15.5 
20.5 
16.0 
105.0 
55.7 

320.0 
186.0 
277.0 
103.0 
48.0 

27.9 
26.5 
34.0 
18.0 
18.0 

18.0 
18.0 
17.0 
19.0 
53.5 

19.5 
15.5 
16.0 
15.5 
15.5 
16.5 



Apr. 



15.5 
13.0 
13.0 
23.0 
18.0 

47.0 
256.0 

79.5 
170.0 

45.0 



17.0 

22.0 
59.0 
28.6 
15.5 
40.0 

16.0 
22.0 
27.9 
18.0 
48.0 

30.8 
20.5 
18.0 
15.5 
15.5 



May. 



15.5 
15.5 
44.0 
64.2 
48.0 

20.0 
16.5 
34.8 
16.5 
16.0 

17.0 
15.5 
16.5 
44.0 
87.0 

24.4 
17.0 
15.5 
17.0 
16.5 

20.0 
33.2 
35.6 
53.5 
25.8 

22.0 

88.6 
281.0 
133. 
50.2 
17.0 



June. 



20.5 
18.0 
18.5 
34.8 
36.4 

23.7 

18.5 
19.5 
23.7 
16.5 

15.5 
16.0 
65.5 
35.6 



23.0 
17.0 
22.0 
33.2 
19.0 

55.7 
31.6 
26.5 
84.0 
25.1 

21.5 

24.4 
18.5 
17.5 
15.5 



July. 



16.5 
15.5 
15.0 
14.0 
22.0 

18.5 
33.2 
15.0 
18.0 
36.4 

106.0 
23.7 
264.0 
211.0 
129.0 

50.2 
203.0 
56.8 
34.8 
23.0 

35.6 
15.0 
14.5 
52.4 
22.5 

37.2 
21.0 
19.0' 
22.5 
22.0 
24.4 



Aug. 



22.5 
16.5 
17.5 
25.1 
23.7 

22.5 
24.4 
47.0 
53.5 
18.5 

18.0 
16.0 
15.0 
155.0 
53.5 

22.5 

18.0 
15.5 
16.5 
16.5 

20.0 
36.4 
25.8 
64.2 
36.4 

53.5 
231.0 
56.8 
45.0 
215.0 



Sept. 



90.2 
88.6 
73.5 
38.0 
28.6 

211.0 
60.3 
40.0 
33.2 
22.0 

25.8 
30.0 
22.5 
21.5 
20.0 

22.5 
22.0 
15.0 
20.0 
18.5 

19.0 
29.3 
19.5 
17.0 
16.0 

15.0 
14.5 
16.5 
20.0 
22.5 



Oct. 



25.1 
19.0 
36.4 
18.0 
22.5 

23.0 
22.5 
35.6 
22.5 
23.0 

19.5 
21.5 
19.0 
19.5 
18.5 

19.0 
39.0 
40.0 
117.0 
50.2 

159.0 
69.4 
55.7 
23.7 
57.9 

221.0 
79.5 
88.6 
54.6 
46.0 
50.2 



Nov. 



29.3 
22.0 
21.0 
20.5 
60.3 

27.2 

23.0 
113.0 
125.0 

30.8 

22.0 
19.0 
18.0 
17.5 
18.0 

18.0 
17.5 
30.0 
29.3 
21.0 

34.8 
49.1 
70.7 
26.5 
21.5 

18.0 
16.5 
17.5 
39.0 
40.2 



Dec. 



73.5 
581.0 
701.0 
191.0 

60.3 

37.2 

29.3 
129.0 
48.0 
30.8 

24.4 
18.0 
19.0 
19.0 
17.5 

29.3 

18.0 
19.0 
20.5 
91.8 

275.0 



292 



101.0 
60.3 
42.0 
34.0 
29.3 
27.9 



ISLAND OF KAUAI. 57 

Monthly discharge of Hanapepe River near Eleele, Kauai, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 




68.1 
225.0 
320.0 
256.0 
281.0 

84.0 
264.0 
231.0 
211.0 
221.0 
125.0 
701.0 


15.5 
13.0 
13.0 
13.0 
15.5 
15.5 
14.0 
15.0 
14.5 
18.0 
16.5 
17.5 


29.3 
25.3 
51.0 
39.7 
42.6 
27.5 
51.3 
48.1 
36.4 
48.9 
33-9 
133.0 


1,800 
1,460 
3,140 
2,360 
2,620 
1.640 
3, 150 
2,960 
2.170 
3,010 
2,020 
8,180 


B. 




B. 




B. 




B. 




B. 




B. 


July , 


B. 




B. 




B. 




B. 




B. 




B. 








701.0 


13.0 


47.5 


34, 500 









HANAPEPE DITCH AT HANAPEPE FALLS, NEAR ELEELE, KATJAI. 

Location. — About 8 miles northeast of Eleele, near Hanapepe Falls, and 400 feet 

below the intake. 
Records available. — November 22, 1911, to December 31, 1912. 
Gage. — Vertical staff; read onCe daily (at irregular hour), except Sundays; datum 

unchanged. 
Channel. — Probably permanent. 
Discharge measurements. — Measurements made from cross timber of flume 4 feet 

above gage. 
Accuracy. — Records good. 

Discharge measurements of Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 6 


W. V. Hardy 


Feet. 
0.82 
1.08 


Sec.-ft. 
10.5 


Nov. 7 


Larrison and Hardy 


15.9 









Daily gage height, in feet, of Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai, for 

1912. 

[S. W. Holmer, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


-Oct. 


Nov. 


Dec. 


1 




0.90 
.89 
.89 

"\*86" 

.85 
.85 
.85 
,90 
.86 

'"".*84" 
.83 
.82 

.81 

.81 
.83 

'"'.'so" 

.80 


0.90 

.85 

""".'86' 
.83 

.82 

.83 

.90 

1.33 

....... 

1.69 
1.43 
1.55 
1.24 
1.20 

1.17 

"i.*24' 
1.11 
1.11 


0.91 
.88 

.87 

1.38 

.92 

.92 

"i.~37* 
1.32 
1.26 

1.23 
1.14 
1.06 

'"i.'02' 

1.02 
1.10 
1.10 
.99 
1.55 


0.96 

.97 

1.20 

1.60 

1.04 
1.08 
1.14 
1.10 
1.02 

1.00 

"Oo" 

1.45 
1.44 

1.16 
1.04 
1.01 

"\*96" 


1.15 

""i'08* 
1.40 
1.14 

1.07 
1.05 
1.05 

""i.'oo' 

.99 
1.14 
1.60 
1.37 
1.40 

"i'65' 

1.18 
1.50 
1.15 


1.05 

.97 
.94 


1.00 
.98 
.95 


"i.'so' 

1.43 
1.34 
1.28 

1.52 
1.20 

"i'26' 

- 1.17 

1.12 
1.15 
1.10 
1.05 

1.46 
1.09 
1.00 
1.32 
1.07 


1.28 
.95 

1.18 
.98 
.95 

"lA2 
1.22 
1.02 
1.00 

.94 
1.07 

""i.'io' 

.92 

.94 
1.42 
1.00 
1.50 


1.27 
1.16 

"".'95" 
1.48 

1.21 
1.06 
1.62 
1.43 

1.14 
1.08 
1.02 
1.00 
.99 

.95 

'"i."42" 
1.10 
1.02 




2.... 5 

3 


1.10 
1.10 
1.07 
1.35 

1.13 


1.82 
1.37 


4 




5 


1.20 
.91 

""."92.' 

1.14 
1.22 

1.60 
1.16 
1.30 

"i."20" 

1.17 
1.24 
1.14 
1.12 
1.27 


1.23 

1.09 
1.39 
1.37 
1.54 
1.15 

"i"05* 

1.04 
1.62 
1.40 

1.20 
1.01 

'"htt 

1.10 


1.40 


6. .. 

7 


1.35 
1.32 


8 


1.25 
1.25 
1.18 

1.10 
1.10 
1.10 
.70 
1.05 

1.02 
1.01 
1.00 
.98 
1.15 




9 

10 


1.42 
1.33 


11 


1.20 


12. 


1.16 


13 


1.29 


14 

15 


1.09 


16 


1.10 


17 


1.02 


18 


1.00 


19.... 


.98 


20 


1.28 



58 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, of Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai, 

for 1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


21 




0.90 
1.20 
1.50 
1.27 

1.00 
.91 

.88 
.87 


1.11 

1.05 

.98 

"\.2b 

1.04 
.96 
.95 
.93 
.92 
.94 


"i'22' 
1.37 

1.05 
1.67 

1.32 
1.15 

"*i."6i" 

.97 


1.00 
1.37 
1.43 
1.50 
1.22 

""i'56' 
1.43 
1.28 
1.28 
1.20 


1.42 
1.25 

"i.'33' 
1.12 

1.07 
1.07 
1.02 
1.02 
.97 


1.10 

1.30 
1.10 

1.38 
1.10 

"i.'05* 
1.18 
1.03 


1.10 
1.40 
1.08 
1.22 

1.21 
1.54 
1.42 
1.22 
1.90 
1.48 


1.05 

"".'99" 
.96 
.94 

.92 

.92 

1.00 

"l.'28" 


1.60 
1.38 
1.30 
1.13 
1.11 

1.68 

"i.*43* 
1.33 
1.41 
1.43 


1.12 
1.58 
1.49 

"i.'04" 

1.00 

.96 

.94 

1.15 

1.50 


1.84 


22 


0.95 

1.34 

.55 

.14 

.14 
.14 




23 


1.40 


24 


1.45 


25 




26 


1.28 


27 


1.22 


28 


1.22 


29 


.88 
.86 
.90 




30 


1.18 


31 


1.20 







Daily discharge, in second-feet, of Hanapepe ditch at Hanapepe Falls, near Eleele,. Kauai, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


16.0 
160 
16.0 
15.4 
22.0 

16.9 
18.6 
20.0 
20.0 
18.4 

16.0 
16.0 
16.0 
8.3 
15.0 

14.4 
14.2 
14.0 
13.6 

17.5 

15.2 
13.0 
21.8 
57.5 
.9 

.9 
.9 
10.4 
11.6 
11.2 
12.0 


12.0 
11.8 
11.8 
11.5 
11.2 

11.0 
11.0 
11.0 
12.0 
11.2 

11.0 
10.8 
10.6 
10.4 
10.2 

10.2 
10.6 
10.3 
10.0 
10.0 

12.0 
19.0 
25.0 
20.4 
17.2 

14.0 
12.2 
11.6 
11.4 


12.0 
11.0 
11.1 
11.2 
10.6 

10.4 
10.6 
12.0 
21.6 

25.7 

29.8 
23.6 
26.5 
19.8 
19.0 

18.1 
19.4 
19.8 
16.3 
16.3 

16.3 
15.0 
13.6 
16.8 
20.0 

14.8 
13.2 
13.0 
12.6 
12.4 
12.8 


12.2 
11.6 
11.4 
22.6 
12.4 

12.4 
17.4 
22.4 
21.4 
20.2 

19.6 
17.2 
15.2 
14.8 
14.4 

14.4 
16.0 
16.0 
13.8 
26.5 

23.0 
19.4 
22.4 
15.0 
29.4 

21.4 
17.5 
15.8 
14.2 
13.4 


13.2 
13.4 
19.0 
28.0 
21.4 

14.8 
15.6 
17.2 
16.0 
14.4 

14.0 
16.5 
19.0 
24.0 
23.8 

17.8 
14.8 
14.2 
13.7 
13.2 

14.0 
22.4 
23.6 
25.0 
19.4 

22.2 

25.0 
23.6 
20.6 
20.6 
19.0 


17.5 
16.6 
15.6 
23.0 
17.2 

15.4 
15.0 
15.0 
14.5 
14.0 

13.8 
17.2 
28.0 
22.4 
23.0 

19.0 
15.0 
18.4 
25.0 
17.5 

23.4 
20.0 
20.8 
21.6 
16.6 

15.4 
15.4 
14.4 
14.4 
13.4 


15.0 
13.4 
12.8 
15.9 
19.0 
12.2 
12.3 
12.4 
17.2 
19.4 

*28.0 
17.8 
21.0 
20.0 
19.0 

16.1 
19.8 
17.2 
16.6 
20.4 

19.0 
17.5 
16.0 
21.0 
16.0 

22.6 
16.0 
15.5 
15.0 
18.4 
14.6 


14.0 
13.6 
13.0 
16.3 
19.6 

15.8 
22.8 
22.4 
26.2 
' 17.5 

16.2 
15.0 
14.8 
28.4 
23.0 

19.0 
14.2 
15.6 
16.9 
16.0 

16.0 
23.0 
15.6 
19.4 
19.3 

19.2 
26.2 
23.4 
19.4 
34.0 
24.6 


24.8. 
25.0 
23.6 
21.8 
20.6 

25.6 
19.0 
19.0 
19.0 
18.1 

16.6 
17.5 
16.0 
15.0 
19.6 

24.2 
15.8 
14.0 
21.4 
15.4 

15.0 
14.4 
13.8 
13.2 
12.8 

12.4 
12.4 
14.0 
17.3 
20.6 


20.6 
13.0 
18.4 
13.6 
13.0 

14.8 
16.6 
19.4 
14.4 
14.0 

12.8 
15.4 
15.7 
16.0 
12.4 

12.8 
23.4 
14.0 
25.0 
26.5 

28.0 
22.6 
21.0 
16.9 
16.3 

29.6 
26.6 
23.6 
21.6 
23-2 
23.6 


20.4 
17.8 
15.4 
13.0 
24.6 

19.2 
15.2 
28.4 
23.6 
20.4 

17.2 
15.6 
14.4 
14.0 
13.8 

13.0 
18.2 
23.4 
16.0 
14.4 

16.6 
27.4 
24.8 
19.8 
14.8 

14.0 
13.2 
12.8 
17.5 
25.0 


28.7 


2 


32.4 


3 


22.4 


4 


22.7 


5 


23.0 


6 


22.0 


7 


21.4 


8 


22.4 


9 


23.4 


10 


21.6 


11 


19.0 


12 


17.8 


13 


20.8 


14 


15.8 


15 


15.9 


16 


16.0 


17 


14.4 


18 


14.0 


19 


13.6 


20 


20.6 


21 


32.8 


22 


27.9 


23 


23.0 


24 


24.0 


25 


22.3 


26 


20.6 


27 


19.4 


28 


19.4 


29 


18.9 


30 


18.4 


31 


19.0 







Note.— Discharge interpolated for days for which gage heights are missing. 
Monthly discharge of Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


January 


57.5 
25.0 
29.8 
29.4 
28.0 
28.0 
28.0 
34.0 
25.6 
29.6 
28.4 
32.8 


0.9 
10.0 
10.4 
11.4 
13.2 
13.4 
12.2 
13.0 
12.4 
12.4 
12.8 
13.6 


15.5 
12.5 
16.3 
17.4 
18.7 
18.0 
17.3 
19.4 
17.9 
18.9 
18.1 
21.1 


953 
719 
1,000 
1,040 
1,150 
1,070 
1,060 
1,190 
1,070 
1,160 
1,080 
1,300 


B. 


February 


B. 


March 


B. 


April 


B. 


May 


B. 


June 


B. 


July 


B. 


August 


B. 




B. 


October 


B. 


November 


B. 


December 


B. 






The year 


57.5 


.9 


17.6 


12,800 









ISLAND OF KAUAI. 



59 



HANAPEPE DITCH AT KOTTLA, NEAR ELEELE, KAUAI. 

Location. — About 4 miles north of Eleele, and 4 miles below intake. 

Records available. — January 1, 1910, to December 31, 1912. 

Gage. — Vertical staff; read once daily; datum unchanged. 

Channel. — Permanent. 

Discharge measurements. — Made from cross timber of flume. 

Accuracy. — Good . 

Cooperation. — Station maintained in cooperation with Hawaiian Sugar Co. 

Discharge measurements of Hanapepe ditch at Koula, near Eleele, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 5 


W.V.Hardy 


Feet. 
2.56 
2.78 


Sec. -ft. 
40.0 


Nov. 7 


Larrison and Hardy 


41.9 









Daily gage height, in feet, of Hanapepe ditch at Koula, near Eleele, Kauai, for 1912. 

[S. W. Holmer, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


3.40 
3.40 
3.45 
3.35 
3.70 

3.70 
3.70 
3.70 
3.70 
3.60 

3.45 
3.40 
3.70 


3.10 
3.10 
3.05 
3.00 
3.00 

2.95 
2.95 
2: 95 
2.95 
3.20 

3.00 
2.90 
2.90 
2.90 
2.88 

2.88 
2.92 
2.90 
2.88 
2.80 

3.05 
3.70 
3.70 
3.70 

3.35 
3.20 
3.15 
3.02 


3.10 
3.10 

"3." 25' 
3.00 

3.10 

2.85 
2.60 
3.10 
3.10 

3.10 
3.10 
3.10 
3.10 
3.10 

3.10 
3.10 
3.10 
3.20 
2.95 

2.92 
2.80 
2.60 

"*3."i6" 

2.80 
2.74 
2.73 
2.60 
2.63 
2.74 


2.63 
2.61 
2.90 
2.65 
2.80 

2.70 
3.10 
3.10 
3.10 
3.10 

3.10 
3.05 
2.90 

"*2." 84* 

2.82 
2.10 
2.10 
2.94 
3.10 

2.94 
3.10 
3.10 
2.92 
3.10 

3.10 
3.06 

"2.'80" 

2.70 


2.90 
2.72 
3.10 
3.10 

3.08 
2.92 
3.10 
3.00 
2.80 

2.79 

"2. 90" 
3.10 
3.10 

3.10 
2.96 
2.60 

"2*72* 

2.74 
3.10 
3.10 
3.10 
3.10 

3.00 
3.10 
3.10 
3.10 
3.10 
3.10 


3.00 

"2. 84" 

3.04 
3.06 

3.10 

2.88 
2.88 
3.10 
2.88 

2.78 
2.68 
3.10 
3.10 
3.10 

3.10 
2.77 
3.10 
3.10 
3.00 

3.10 
3.10 

"3.10 

3.10 

3.00 
3.00 

2.84 
2.77 

2.77 


■ 2.80 
2.77 
2.70 
2.80 
2.95 

2.70 
3.06 
2.86 
2.78 
3.10 

3.10 
3.10 
3.10 
3.10 
3.10 

3.10 
3.10 
3.10 
3.10 
3.10 

3.10 
3.10 
3.10 
3.10 
3.06 

3.10 
3.02 

"2. 88' 
3.08 
2.85 


2.80 
1.74 
1.68 

""i'io" 

3.10 
3.10 
3.10 
3.10 
3.00 

3.10 
2.06 
2.94 
3.10 
3.10 

3.08 
2.93 

' '2. 80* 
2.74 

2.67 
3.10 
2.84 
3.10 
3.10 

3.10 
3.10 
2.78 
3.08 
3.10 


3.10 
3.10 
3.10 
3.10 
3.08 

3.10 
3.10 

"i'io" 
3.00 

2.92 
2.92 
2.92 
2.77 
2.73 

2.70 
3.10 
2.73 
2.96 
2.80 

2.76 
3.10 
2.70 
2.60 
2.52 

2.48 
2.48 
2.45 
2.55 
3.00 


3.00 

2.72 
3.10 
2.62 
2.70 

"2. 80* 
2.90 
3.08 
3.00 

2.55 

2.52 
2.52 
2.51 
2.51 

2.50 

2.58 
2.85 
3.10 
3.10 

3.10 
3.10 
3.10 
2.90 
2.75 

3.10 
3.10 
3.10 
3.10 
3.10 
3.10 


3.10 
2.80 

"*2." 78" 
3.10 

3.00 
3.00 
2.80 
3.10 

2.98 
2.78 
2.70 
2.65 
2.59 

2.50 

"2. 70* 
3.10 
2.62 

3.10 
2.96 
3.10 
3.00 
2.75 

2.60 
2.55 
2.55 
3.08 
3.10 


3.10 


2 


3.10 


3 


3.10 


4 


3.10 


5 


3.10 


6 


3.10 


7 




8 


3.10 


9 


3.10 


10 


3.10 


11 


3.10 


12 


2.94 


13 

14 


2.84 
2.80 


15 


3.30 

3.25 
3.20 
3.18 
3.15 
3.40 

3.20 
3.18 
3.15 
1.90 
2.45 

2.40 

2.40 
2.20 
3.00 
2.98 
3.20 




16 


2.70 


17 


2.70 


18 


2.60 


19 


2.64 


20 


3.10 


21 


3.10 


22 




23 


3.10 


24 .. 


3.10 


25 


3.10 


26 


3.10 


27 


3.10 


28 . 


3.10 


29 




30 


3.10 


31 


3.10 











Note. — No reading on days for which gage heights are missing. 



60 WATER RESOURCES OF HAWAII, 1912. 

Daily discharge, in second-feet, of Hanapepe ditch at Koula, near Eleele, Kauai, for 1912, 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


59.3 
59.3 
60.6 
58.0 
65.4 

65.4 
65.4 
65.4 
65.4 
62.7 

60.6 
59.3 
65.4 
61.0 
56.7 

55.4 
54.1 
53.6 
52.8 
59.3 

54.1 
53.6 
52.8 
23.2 
35.4 

34.2 
34.2 
29.5 
49.0 
48.5 
54.1 


51.5 
51.5 
50.2 
49.0 
49.0 

47.8 
47.8 
47.8 
47.8 
54.1 

49.0 
46.5 
46.5 
46.5 
46.0 

46.0 
47.0 
46.5 
46.0 
44.0 

50.2 
65.4 
65.4 
65.4 
61.7 

58.0 
54.1 
52.8 
49.5 


51.5 
51.5 
53.4 
55.4 
49.0 

51.5 
45.2 
39.0 
51.5 
51.5 

51.5 
51.5 
51.5 
51.5 
51.5 

51.5 
51.5 
51.5 
54.1 

47.8 

47.0 
44.0 
39.0 
45.2 
51.5 

44.0 
42.5 
42.2 
39.0 
39.8 
42.5 


39.8 
39.2 
46.5 
40.2 
44.0 

41.5 
51.5 
51.5 
51.5 
51.5 

51.5 
50.2 
46.5 
45.8 
45.0 

44.5 
27.3 
27.3 
47.5 
51.5 

47.5 
51.5 
51.5 
47.0 
51.5 

51.5 
50.5 
47.2 
44.0 
41.5 


46.5 
42.0 
51.5 
51.5 
50.2 

51.0 

47.0 
51.5 
49.0 
44.0 

43.8 
45.2 
46.5 
51.5 
51.5 

51.5 
48.0 
39.0 
40.5 
42.0 

42.5 
51.5 
51.5 
51.5 
51.5 

49.0 
51.5 
51.5 
51.5 
51.5 
51.5 


49.0 
47.0 
45.0 
50.0 
50.5 

51.5 
46.0 
46.0 
51.5 
46.0 

43.5 
41.0 
51.5 
51.5 
51.5 

51.5 
43.2 
51.5 
51.5 
49.0 

51.5 
51.5 
51.5 
51.5 
51.5 

49.0 
49.0 
45.0 
43.2 
43.2 


44.0 
43.2 
41.5 
44.0 
47.8 

41.5 
50.5 
45.5 
43.5 
51.5 

51.5 
51.5 
51.5 
51.5 
51.5 

51.5 
51.5 
51.5 
51.5 
51.5 

51.5 
51.5 
51.5 
51.5 
50.5 

51.5 
49.5 
47.8 
46.0 
51.0 
45.2 


44.0 
20.2 
19.0 
35.2 
51.5 

51.5 
51.5 
51.5 
51.5 
49.0 

51.5 
26.5 
47.5 
51.5 
51.5 

51.0 
47.2 
45.6 
44.0 
42.5 

40.8 
51.5 
45.0 
51.5 
51.5 

51.5 
51 5 
43.5 
51.0 
51.5 
51.5 


51.5 
51.5 
51.5 
51.5 
51.0 

51.5 
51.5 
39.4 
27.3 
49.0 

47.0 
47.0 
47.0 
43.2 
42.2 

41.5 
51.5 
42.2 
48.0 
44.0 

43.0 
51.5 
41.5 
39.0 
37.1 

36.1 
36.1 
35.4 
37.8 
49.0 


49.0 
42.0 
51.5 
39.5 
41.5 

42.8 
44.0 
46.5 
51.0 
49.0 

37.8 
37.1 
37.1 
36.8 
36.8 

36.6 
38.5 
45.2 
51.5 
51.5 

51.5 
51.5 
51.5 
46.5 
42.8 

51.5 
51.5 
51.5 
51.5 
51.5 
51,5 


51.5 
44.0 
43.8 
43.5 
51.5 

49.0 
49.0 
44.0 
51.5 
50.0 

48.5 
43.5 
41.5 
40.2 
38.8 

36.6 
39.0 
41.5 
51.5 
39.5 

51.5 
48.0 
51.5 
49.0 

42.8 

39.0 
37.8 
37.8 
51.0 
51.5 


51.5 


2 


51.5 


3 


51.5 


4 


51.5 


5 


51.5 


6 


51.5 


7 


51.5 


8 


51.5 


9 


51.5 


10 


51.5 


11 


51.5 


12 


47.5 


13 


45.0 


14 


44.0 


15 


42.8 


16 


41.5 


17 


41.5 


18 


39.0 


19 


40.0 


20 


51.5 


21 


51.5 


22 


51.5 


23 


51.5 


24 


51.5 


25 


51.5 


26 


51.5 


27 


51.5 


28 


51.5 


29 


51.5 


30 


51.5 


31 


51.5 







Note.— Discharge interpolated for days for which gage heights are missing. 

Monthly discharge of Hanapepe ditch at Koula, near Eleele, Kauai, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


January 


65.4 
65.4 
55.4 
51.5 
51.5 
51.5 
51.5 
51.5 
51.5 
51.5 
51.5 
51.5 


23.2 
44.0 
39.0 
27.3 
39.0 
41.0 
41.5 
19.0 
27.3 
36.6 
36.6 
39.0 


54.0 
51.1 

48.1 
45.9 
48.3 
48.5 
48.9 
46.0 
44.5 
45.8 
45.3 
49.2 


3,320 
2,940 
2,960 
2,730 
2,970 
2,890 
3,010 
2,830. 
2,650 
2,820 
2,700 
3,030 


A. 


February 


A. 


March 


A. 


April 


A. 


May 


A. 


June 


A. 


July 


A. 


August 


A. 




A. 


October 


A. 




A. 


December. 


A. 






The year 


65.4 


19.0 


48.0 


34,800 









HANAPEPE DITCH AT WEIR NEAR HANAPEPE.i KATTAI. 

Location. — About 2\ miles northeast of Hanapepe, below the last siphon crossing 

Hanapepe River. 
Records available. — January, 1910, to December 31, 1912. 
Gage. — Staff gage spiked to right bank of ditch; read once daily; zero on gage equals 

crest of weir. 

Channel. — Permanent. 

i Described in Water-Supply Paper 318, p. 85, as near Makaweli. 



ISLAND OF KAUAI. 



61 



Discharge measurements. — Measured by a 12-foot sharp-crested weir with end 

contraction and from a plank across ditch. 
Accuracy. — Records good. 
Cooperation. — Station is the property of the Hawaiian Sugar Co. and records are 

furnished at end of calendar year. 

Daily discharge, in second-feet, of Hanapepe ditch at weir near Hanapepe, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


42.5 

42.5 
42.5 
42.5 
42.5 

45.1 
45.1 
45.1 
46.4 
46.4 

46.4 
43.8 
43.8 
12.4 
12.4 

40.0 
21.8 
40.0 
38.8 
38.8 

41.2 
40.0 
37.5 
37.5 
12.4 

26.0 
26.0 
26.0 
28.2 
35.2 
37.5 


37.5 
37.5 
37.5 
37.5 
36.3 

35.2 
35.2 
35.2 
35.2 
35.2 

37.5 
35.2 
35.2 
34.0 
34.0 

34.0 
34.0 
34.0 
32.8 
32.8 

34.0 
36.3 
45.1 

47.7 
46.4 

45.1 
41.2 
38.8 
37.5 


34.0 
37.5 
37.5 
41.2 
37.5 

36.3 
37.5 

38.8 
40.0 
45.1 

46.4 
47.7 
47.7 
47.7 
46.4 

46.4 
47.7 
47.7 
47.7 
42.5 

41.2 
40.0 
38.8 
37.5 
40.0 

43.8 
37.5 
37.5 
37.5 
37.5 
37.5 


37.5 
36.3 
35.8 
35.2 
40.0 

38.8 
42.5 
46.4 
46.4 
47.7 

47.7 
46.4 
44.4 
42.5 
42.5 

38.8 
41.2 
46.4 
45.1 
40.0 

45.1 
40.0 
42.5 
43.8 
38.8 

47.7 
47.7 
45.1 
41.2 
42.5 


40.0 
40.0 
41.2 
45.8 
49.0 

49.0 
45.1 
43.8 
46.4 
41.2 

40.0 
37.5 
35.2 
35.2 
45.1 

46.4 
43.8 
39.4 
35.2 
35.8 

35.2 
40.0 
42.5 
45.1 
45.1 

43.8 
41.2 
46.4 
46.4 
42.5 
44.4 


46.4 
42.5 
40.0 
40.0 
43.8 

43.8 
43.8 
38.8 
40.0 
42.5 

37.' 5 
35.2 
37.5 
45.1 
45.1 

43.8 
40.0 
37.5 
43.8 
45.1 

43.8 
46.4 
45.1 
45.1 
45.1 

45.1 
41.2 
40.0 
37.5 
35.2 


35.2 
35.2 
35.2 
35.2 
35.2 

37.5 
35.2 
41.2 
36.3 
37.5 

42.5 
45.1 
46.4 
49.0 

47.7 

46.4 
46.4 
46.4 
46.4 
46-4 

46.4 
46.4 
46.4 
46.4 
46.4 

46.4 
46.4 
42.5 
42.5 
40.6 
42.5 


40.6 
38.8 
36.3 
34.0 
37.5 

45.1 
43.8 
46.4 
46.4 
46.4 

45.8 
45.1 
40.6 
40.6 
46.4 

46.4 
43.8 
37.5 
35.2 
34.6 

32.8 
37.5 
43.8 
41.2 
42.5 

45.1 
45.1 
43.8 
36.3 

45.8 
45.8 


44.4 
45.1 
44.4 
45.1 
45.1 

46.4 
46.4 
45.1 
45.1 
44.4 

41.2 
41.2 
42.5 
40.0 
36.3 

36.3 

38.8 
40.0 
36.3 
37.5 

37.5 
32.8 
37.5 
32.8 
30.4 

29.3 

28.2 
28.2 
30.4 
35.2 


37.5 
37.5 
29.8 
37.5 
32.8 

34.0 

35.8 
38.8 
42.5 
38.8 

37.5 
35.2 
35-2 
32.8 
34.0 

30.4 
34.0 
41.2 
41.2 
45.1 

46.4 
47.7 
47.7 
46.4 
42.5 

43.8 
46.4 
46.4 
46.4 
45.8 
46.4 


45.8 
45.1 
40.6 
40.6 
40.0 

46.4 

45.8 
42.5 
46.4 
49.0 

49.0 

43.8 
38.8 
37.5 
35.8 

34.6 

32.8 
32.8 
41.2 
37.5 

40.0 
40.6 
43.8 
43.8 
42.5 

39.4 
35.8 
35.2 
36.3 
42.5 


43.8 


2 


45.1 


3 


47.7 


4 


10.8 


5 


10.8 


6.. 


49.0 


7 


46.4 


8 


46.4 


9... 


46.4 


10 


46.4 


11 


46.4 


12 


41.2 


13 


43.8 


14. 


43.8 


15 


43.8 


16 


43.8 


17 .'. 


43.8 


18 


40.6 


19 


40.0 


20 


42.5 


21 


45.1 


22 


45.1 


23 


42.5 


24 

25 


42.5 
47.7 


26 


35.2 


27 


45.1 


28 


45.8 


29 


45.8 


30 


45.1 


31 


45.1 







Monthly discharge of Hanapepe ditch at weir near Hanapepe, Kauai, for 1912. 



Month. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



Discharge in second-feet. 



Maximum. 



46.4 
47.7 
47.7 
47.7 
49.0 
46.4 
49.0 
46.4 
46.4 
47.7 
49.0 
49.0 



49.0 



Minimum. 



12.4 
32.8 
34.0 
35.2 
35.2 
35.2 
35.2 
32.8 
28.2 
29.8 
32.8 
10.8 



10.8 



36.3 
37.2 
41.4 
42.5 
42.2 
41.9 
42.6 
41.7 
38.8 
39.9 
40.9 
42.2 



40.6 



Run-off 
(total in 
acre-feet). 



2,230 
2,140 
2,550 
2,530 
2,590 
2,490 
2,620 
2,560 
2,310 
2,450 
2,430 
2,590 



29,500 



62 



HANAPEPE RIVER AT HANAPEPE FALLS, NEAR ELEELE, KATTALi 



Location. — About 8 miles north of Eleele and just above confluence with Hanapepe 

River. 
Records available. — November 21, 1911, to December 31, 1912. 
Drainage area. — 6.55 square miles. 
Gage. — Vertical staff; datum unchanged. 
Channel. — Permanent. 
Discharge measurements. — Made from crest of dam. Dam is 75 feet long, 3 feet 

wide, and height is 5 feet on lower side. 

Daily gage height, in feet, of Hanapepe River at Hanapepe Falls, near Eleele, Kauai, 

for 1912. 

[S. W. Holmer, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




















0.12 






2 


















0.44 
.42 
.24 
.12 

.72 
.02 

*"\"02" 




1.47 


3. . 










0.12 
.65 












2.45 


4 






















5 


0.50 










0.24 






0.80 
.05 


.27 


6 












.17 


7 
















0.16 
.10 
.52 


.12 


8 


.20 
.20 






0.35 
.36 
.20 


.15 






.03 


.12 
.32 




9 




0.28 






.34 


10 






.08 

.65 
.02 
.60 

""".'58" 

.17 
.68 
.27 
.07 


.17 


11 






.77 
.72 
1.12 
.40 
.25 

.02 
















12 






















13 










0.70 
.12 
.20 












14 


.45 






.12 

.27 


.68 
.27 










15 










16 






.10 








17 












.36 






18 






.05 






.02 

.12 






.27 




19 














.64 




20 








.25 










.22 


21 










.42 

.08 








1.00 
.12 
.08 


"""."is" 

.75 


1.45 


22 




0. 20 

1.00 

.30 




.50 
.10 


.09 

.18 
.52 










23 


.75 
.30 
.15 

.14 
.14 








1.60 


24 


.38 


.58 






1.35 


25 


.12 


.70 
.18 












26 


.50 




.35 


.19 
.80 
.30 




.63 




.42 


27 . 






.28 


28 








1.25 
.62 
.14 








.24 

.12 
.20 

.18 




.17 


29 
















30 














1.30 


.05 


.48 


.08 







































Note.— Gage heights show days when water was flowing over dam. Station not visited Sundays, but 
lack of gage heights on week days indicates that all the water was diverted at the dam. 

HILOA DITCH AT HANAPEPE FALLS, NEAR ELEELE, E^UAI. 

Location. — About 8 miles north of Eleele and 335 feet below intake. 

Records available. — November 22, 1911, to December 31, 1912. 

Gage. — Vertical staff; read at irregular hour once each day except Sundays; datum 

unchanged. 
Channel. — Permanent. 
Discharge measurements. — Made from plank across ditch at gage. 



1 Described in Water-Supply Paper 318, p. 86, as " Hiloa Stream at Hanapepe Falls, near Eleele, Kauai.' 



ISLAND OF KAUAI. 63 

Discharge measurements of Hiloa ditch at Hanapepe Falls, near Eleele, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 6 


W. V. Hardy 


Feet. 
1.86 
1.82 


Sec.-ft. 
35.7 


Nov 7 




35.5 









Daily 



height, in feet, of Hiloa ditch at Hanapepe Falls, near Eleele, Kauai, for 1912. 
[S. W. Holmer, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




1.60 
1.58 
1.55 

""i.'so" 

1.49 
1.49 
1.49 
1.51 
1.65 

'"i."48" 
1.47 
1.46 
1.46 

1.45 
1.48 

"i'.te 
1.43 

1.50 
2.04 
2.37 
2.00 

1.76 
1.65 
1.59 
1.55 


1.90 
1.59 

"i'76' 

1.55 

1.83 
1.64 
1.60 
2.37 

2.65 
2.09 
2.19 
2.12 
2.05 

2.02 

"2." 05* 
1.80 
1.80 

1.75 
1.78 
1.62 

"*2."i6" 

1.68 
1.58 
1.57 
1.54 
1.50 
1.72 


1.50 
1.50 
1.47 
1.90 

1.58 

1.56 

"2. 18* 
2.13 
2.04 

2.00 
.1.86 
1.70 

*"i."64" 

1.66 
2.05 
2.00 
1.66 
2.27 

"*2."l8" 
2.18 
1.67 
2.52 

1.97 

1.78 

*"i."58' 
1.53 


1.52 
1.53 
2.14 

2.48 

1.77 
1.75 
2.20 
1.80 
1.58 

1.59 

"l."66' 
2.16 
2.20 

1.96 
1.67 
1.59 

""i."53" 

1.74 
2.15 
2.22 
2.34 
2.00 

"2. 30* 
1.98 
1.74 
2.10 
2,02 


1.86 

"i.'76' 
2.00 
1.88 

1.78 
1.66 
1.68 

'"1*66" 

1.63 
1.62 
2.50 
2.17 
2.24 

""i."65* 
2.08 
2.18 
1.92 

2.35 
2.14 

"2.'32" 
2.02 

1.75 
1.85 
1.64 
1.62 
1.55 


1.90 
1.65 

1.54 


1.64 
1.60 
1.55 


"*2.' 07* 
2.02 
1.92 
1.94 

1.80 
2.03 

"¥. 03" 
1.85 

1.74 
1.80 
1.75 
1.67 

2.09 
1.85 
1.60 
1.80 
1.70 

1.63 

"""..'59" 
1.54 
1.50 

1.48 
1.47 
1.54 

"*2."l6" 


2.15 
1.56 
2.00 
1.57 
1.60 

"Y.'lY 
2.08 
1.71 

1.78 

1.55 
1.62 

*'i."68' 
1.62 

1.57 

2.28 

. 1.82 

2.45 

2.30 
2.15 
2.10 
1.81 

1.77 

2.45 

"% 22" 
2.12 
2.19 
2.18 


2.02 
1.79 

""i.*67* 
2.50 

2.12 
1.81 
2.22 
2.24 

1.80 
1.68 
1.60 
1.56 
1.53 

1.50 

"2.'32' 
1.72 
1.62 

1.76 
2.22 
2.49 

"*i.*60* 

1.52 
1.48 
1.46 
1.65 
2.20 




2 


1.82 
1.80 
1.74 
2.35 

1.95 


2.78 


3 


2.10 


4 




5.. 


2.22 

1.58 

"i.'60* 
1.62 
2.12 

2.48 
2.11 
2.30 

"*2.*i2' 

2.17 
2.42 
2.07 
2.05 
2.05 

"2. 66' 

1.99 
2.40 
1.98 

1.94 

1.87 

""i~69' 
1.84 
1.64 


1.80 

1.76 
2.20 
2.20 
2.45 
1.86 

"i."63" 
1.64 
2.52 
1.95 

1.88 
1.68 

'"i.'62' 
1.60 

1.60 
2.02 
1.62 
2.00 

1.95 
1.97 
2.07 
2.04 
2.10 
2.05 


2.10 


6 


2.06 


7 


2.02 


8 


2.15 
2.15 
2.02 

1.80 
1.79 
2.01 
1.48 

1.78 

1.70 
1.66 
1.63 
1.62 
2.12 




9 


2.14 


10 


2.04 


11 


1.90 


12 


1.86 


13 


1.86 


14 


1.71 


15 




16 


1.73 


17 


1.65 


18 


1.62 


19 


1.70 


20 


2.18 


21 


2.74 


22 


1.59 
2.58 
1.06 
1.35 

1.35 
1.35 




23 


2.80 


24 


2.35 


25...: 




26 


2.10 


27 


2.00 


28 


2.05 


29 


1.58 
1.56 
1.70 




30..... 


1.97 


31 


2.06 







HTTLEIA RIVER BASIN. 
HULEIA RIVER NEAR LIHUE, KATJAI. 

Location. — Three hundred feet above stone bridge where wagon road from Lihue to 
the Rice plantation crosses stream and about 4 miles southwest of Lihue. 

Records available. — May 8, 1912, to December 31, 1912. 

Gage. — Vertical low- water staff gage; inclined high- water gage; read once daily, 
about 9 a.m.; datum unchanged. 

Channel. — Practically permanent. 

Discharge measurements. — Made by wading. 

Cooperation. — Station is maintained in cooperation with Charles Rice. 



64 WATER RESOURCES OF HAWAII, 1912. 

Discharge measurements of Huleia River near Lihue, Kauai, in 1912. 



Date. 



Hydrographer. 



Gage 
height. 



Dis- 
charge. 



Feb. 12 
May 8 
Oct. 30 
Nov. 13 



W.V.Hardy 

do 

do 

Larrison and Hardy 



Feet. 
6.21 
6.31 
6.45 
6.25 



Sec.-ft. 
5.57 
7.45 
10.2 
6.26 



Daily gage height, in feet, of Huleia River near Lihue, Kauai, for 1912. 
[Win. Kaiawe, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












6.30 
6.30 
6.30 
6.40 
6.50 

6.42 
6.36 
6.31 
6.30 
6.30 

6.31 
6.31 
6.30 
6.31 
6.31 

6.50 
6.30 
6.30 
6.30 
6.30 

6.30 

6.29 
6.27 
6.25 
6.25 

6.25 
6.25 
6.25 
6.25 
6.25 


6.25 

6.24 
6.22 
6.21 
6.20 

6. 20 
6.20 
6.20 
6.20 
6.32 

6.40 
6.31 
6.29 
7.30 
6.95 

6.31 
6.40 
6.31 
6.30 
6.30 

6.30 
6.30 
6.29 
6.29 
6.30 

6.30 
6.30 
6.29 
6.30 
6.30 
6.30 


6.29 
6.25 
6.25 
6.24 
6.24 

6.29 
6.25 
6.22 
6.20 
6.21 

6.20 
6.20 
6.20 
6.30 
6.41 

6.26 

6.25 
6.22 
6.22 
6.22 

6.22 
6.24 
6.22 
6.30 
6.29 

6.29 
7.55 
6.30 
6.29 
6.30 
6.31 


6.30 
6.25 
6.30 
6.30 
6.30 

7.70 
6.38 
6.30 
6.30 
6.30 

6.25 

6.22 
6.21 
6.20 
6.20 

6.20 
6.20 
6.20 
6.25 
6.21 

6.20 
6.20 
6.20 
6.20 
6.20 

6.20 
6.20 
6.20 
6.20 
6.20 


6.22 
6.20 
6.20 
6.20 
6.21 

6.20 
6.20 
6.23 
6.29 
6.30 

6.31 
6.31 
6.22 
6.22 
6.20 

6.20 

6.20 
6.20 
6.25 
6.30 

7.10 
6.40 
6.30 
6.30 
6.29 

6.90 
6.35 
6.30 
6.40 
6.42 
6.37 


6.31 
6.31 
6.30 
6.30 
6.30 

6.30 
6.30 
6.30 
7.30 
6.35 

6.35 
6.33 
6.25 
6.22 
6.22 

6.21 
6.21 
6.29 
6.24 
6.21 

6.25 
6.30 
6.35 
6.31 
6.30 

6.26 
6.21 
6.21 
6.80 
6.35 


6.40 


2 




6.21 








8.10 


3 










8.50 


4 












7.60 


5. . 












7.30 


6 












7.10 


7 










6.31 
6.30 
6.30 
6.30 

6.30 
6.30 
6.30 
6.30 
6.40 

6.35 
6.31 
6.30 
6.30 
6.29 

6.28 
6.26 
6.30 
6.31 
6.30 

6.30 

6.30 
6.35 
6.37 
6.32 
6.31 


7.10 


8 










7.10 


9 










6.90 


10 










6.81 


11 










6.75 


12 










6.75 


13 










6.70 


14 










6.65 


15 










6.63 


16 










6.60 


17 










6.60 


18 










6.59 


19 










6.55 


20 










6.60 


21 










6.60 


22 










6.55 


23 










7.60 


24 










8.10 


25 










7.90 


26 










7.75 


27 










7.00 


28 










6.65 


29 










6.60 


30 










6.60 


31 










6.60 















HANAMAULU RIVER BASIN. 
HANAMATTLXT RIVER AT KAPAIA, NE AR LIHTJE, KAUAI. 

Location. — At wagon-road bridge about 600 feet north of the village of Kapaia and 

1 mile north of Lihue. 
Records available. — September 4, 1911, to December 31, 1912. 
Gage. — Vertical staff; read twice daily, at 9 a. m. and 5 p.m.; datum unchanged. 
Channel. — Permanent . 
Discharge measurements. — Made from lower side of bridge during high water and 

by wading at low water. 
Accuracy. — Records good. 

Discharge measurements of Hanamaulu River at Kapaia, near Lihue, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Feb. 28 


W.V.Hardy 


Feet. 
4.95 
5.80 


Sec.-ft. 
6.47 


Mar. 15 




35.9 









ISLAND OF KAUAI. 



65 



Daily gage height, in feet, of Hanamaulu River at Kapaia, near Lihue, Kauai, for 1912. 

[J. K. Gandall, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


5.2 
5.2 
5.2 
5.1 
5.1 

5.0 


4.9 

4.8 
4.8 

""b.2 

5.1 
5.1 
4.9 
4.9 
4.9 

"TT 
5.3 
4.9 
4.9 

4.9 
4.9 

"TT 

4.9 

4.9 
4.9 
5.3 
5.3 

5.3 
5.3 
4.9 
4.9 


4.9 
4.9 

"TT 
5.5 

5.5 
5.5 
5.5 

5.7 

5.5 
5.7 

5.7 
5.8 
5.8 

5.8 

"TT 
5.3 

5.2 

5.2 
5.5 
5.5 

"TT 

5.4 
5.3 
5.1 
5.0 
5.0 


5.1 
5.2 
5.1 
5.1 

5.1 

5.2 

"TT" 
5.0 

5.6 

5.4 
5.0 

5.0 

"TT" 

5.0 

7.5 

6.15 

5.7 

5.5 

"TT" 

5.2 
5.1 
5.3 

5.3 
5.3 

"TT' 
5.3 


5.6 
5.1 
5.1 
5.1 

5.0 
5.0 
5.0 
5.0 
5.0 

5.0 

""To" 

5.0 
5.1 

5.1 

5.1 
5.1 

"TT 

5.0 
5.1 
5.1 
5.1 
5.1 

"To" 

5.0 
5.6 

5.7 
5.7 


5.7 

"TT 

5.7 
5.6 

5.3 
5.2 
5.5 

"*"5*i" 

5.1 
5.1 
5.1 
5.0 
5.1 

"TT 
5.4 
5.3 
5.2 

5.2 
5.1 

"TT 
5.1 

5.1 

5.0 
5.0 
5.0 


5.0 
5.0 
5.0 
5.0 
5.0 

5.0 

"TT 
5.3 

5.0 

5.0 
5.0 
5.0 

"TT 

5.1 
5.2 
5.3 
5.2 
5.2 

"TY 

5.1 
5.0 
5\0 

5.0 
5.0 

"To" 

5.0 
5.7 


5.5 
5.1 
5.1 

"TT" 

5.1 
4.9 
4.9 
4.9 

4.8 

"4.* 8** 
4.9 
4.9 
4.9 

4.9 

4.8 

"TT* 
4.8 

4.8 
4.8 
4.85 
4.8 

4.8 
4.8 
4.8 
4.8 
5.0 
4.9 


"TT 
4.9 

4.8 
4.8 

4.9 
5.0 

""TT 
4.8 

4.9 
4.9 
4.9 
4.9 

4.8 
4.8 
4.9 
5.0 
5.0 

5.0 

"To" 

5.0 
5.0 

5.0 
5.0 
5.0 

"TT 


4.9 
4.9 
4.9 
5.0 
5.0 

"TT 

5.0 
5.0 
4.9 

4.9 
4.9 

"TT 

4.8 

4.8 
5.0 
4.9 
4.9 

4.8 
4.8 
4.9 
5.0 
5.0 

5.0 


4.7 
4.7 




2 




3 




4 


5.8 
5.8 

5.0 
5.0 
5.0 

4.8 




5 




6. 




7 




8 


5.2 
5.2 

5.1 

5.0 
5.0 
5.0 




9 




10 




11 


4.9 
5.0 
4.9 
4.7 
4.7 

4.8 

"TT 
4.8 
4.8 

4.8 




12 




13 




14 






5.2 

5.1 
5.1 
4.9 
4.9 
4.9 




16 




17 


5.38 






19 




20 






5.7 


22 


4.8 
4.8 
5.6 
5.6 

5.3 




23 




5.7 


24 


5.7 


25 


5.8 




5.7 


27 


5.65 


28 


4.7 
4.7 
4.7 
4.7 




5.65 


29 


5.5 
5.4 

5.4 




30 




5.6 


31 


5.5 













Daily discharge, in second-feet, of Hanamaulu River at Kapaia, near Lihue, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


11.3 
11.3 
11.3 
9.0 
9.0 

7.1 
9.2 
11.3 
11.3 
9.0 

7.1 
7.1 
7.1 
9.2 
11.3 

9.0 
9.0 
5.6 
5.6 
5.6 

5.0 

4.3 

4.3 

25.1 

25.1 

14.0 
14.0 
17.4 
20.9 
17.2 
17.2 


5.6 
4.3 
4.3 
7.8 
11.3 

9.0 
9.0 
5.6 
5.6 
5.6 

13.2 
20.9 
1*.0 
5.6 
5.6 

5.6 
5.6 
11.4 
17.2 
5.6 

5.6 
5.6 
14.0 
14.0 
14.0 

14.0 
14.0 
5.6 
5.6 


5.6 
5.6 
11.4 
17.2 
20.9 

20.9 
20.9 
20.9 
29.9 
25.4 

20.9 
29.9 
29.9 
35.2 
35.2 

35.2 
24.6 
14.0 
14.0 
11.3 

11.3 
20.9 
20.9 
23.0 
25.1 

17.2 
14.0 
9.0 
7.1 
7.1 
8.0 


9.0 
11.3 
9.0 
9.0 
9.0 

11.3 
11.3 
11.3 
7.1 
25.1 

17.2 
7.1 
7.1 
8.0 
9.0 

7.1 
160.0 
57.6 
29.9 
20.9 

17.4 
14.0 
11.3 
9.0 
14.0 

14.0 
14.0 
19.6 
25.1 
14.0 


25.1 
9.0 
9.0 
9.0 

8.0 

7.1 
7.1 
7.1 
7.1 
7.1 

7.1 
7.1 
7.1 
7.1 
9.0 

9.0 
9.0 
9.0 
9.0 
9.0 

7.1 
9.0 
9.0 
9.0 
9.0 

8.0 

7.1 

7.1 

25.1 

29.9 

29.9 


29.9 
32.6 
35.2 
29.9 
25.1 

14.0 
11.3 
20.9 
15.0 
9.0 

9.0 
9.0 
9.0 
7.1 
9.0 

17.0 
25.1 
17.2 
14.0 
11.3 

11.3 
9.0 
9.0 
9.0 
9.0 

9.0 
7.1 
7.1 
7.1 
7.1 


7.1 
7.1 
7.1 
7.1 
7.1 

7.1 
7.1 
7.1 
14.0 
7.1 

7.1 

7.1 

7.1 

21.2 

35.2 

9.0 
11.3 
14.0 
11.3 
11.3 

11.3 
11.3 
9.0 
7.1 
7.1 

7.1 
7.1 
7.1 
7.1 
7.1 
29.9 


20.9 
9.0 
9.0 
9.0 
9.0 

9.0 
5.6 
5.6 
5.6 
4.3 

4.3 
4.3 
5.6 
5.6 
5.6 

5.6 
4.3 
4.3 
4.3 
4.3 

4.3 
4.3 
5.0 
4.3 
4.3 

4.3 
4.3 
4.3 

4.3 
7.1 
5.6 


7.3 
9.0 
5.6 
4.3 
4.3 

5.6 
7.1 
6.4 
5.6 

4.3 

5.6 
5.6 
5.6 
5.6 
5.0 

4.3 
4.3 
5.6 
7.1 
7.1 

7.1 
7.1 
7.1 
7.1 
7.1 

7.1 
7.1 
7.1 
6.4 
5.6 


5.6 
5.6 
5.6 
7.1 
7.1 

7.1 
7.1 
7.1 
7.1 
5.6 

5.6 
5.6 
5.6 
5.6 
4.3 

4.3 
7.1 
5.6 
5.6 
5.0 

4.3 
4.3 
5.6 
7.1 
7.1 

7.1 
5.2 
3.2 
3.2 
3.2 
3.2 


3.2 
3.2 
19.2 
35.2 
35.2 

7.1 
7.1 
7.1 
4.3 
5.0 

5.6 
7.1 
5.6 
3.2 
3.2 

4.3 
4.3 
4.3 
4.3 
4.3 

4.3 





2 




3 




4 




5 




6 




7 




8 




9 




10 




11 




12 




13 




14 




15 




16 




17 


16.6 


18 




19 




20 




21 


29.9 


22 


29.9 


23 


29.9 


24 


29.9 


25 


35.2 


26 


29.9 


27 


27.5 


28 


27.5 


29 


26.3 


30 


25.1 


31 


20.9 







14694°— wsp 336—14- 



66 



WATER RESOURCES OF HAWAII, 1912. 



Monthly discharge of Hanamaulu River at Kapaia, near Lihue, Kauai, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 1-21 

December 17 and 21-31. 

The period 



25.1 

17.2 

35.2 

160.0 

29.0 

35.2 

35.2 

20.9 

9.0 

7.1 



4.3 
4.3 
5.6 
7.1 
7.1 
7.1 
7.1 
4.3 
4.3 
3.2 



11.00 
9.14 
19.10 
19.70 
10.60 
14.50 
10.40 
6.04 
6.14 
5.57 
8.43 
27.40 



676 
526 
1,170 
1,170 
652 
863 
640 
371 
365 
342 
351 
652 



7,780 



WAILUA RIVER BASIN. 



SOUTH FORK OF WAILUA RIVER ABOVE WAIEHU FALLS, NEAR LIHUE, KAUAI. 

Location. — About 7 miles northeast of Lihue, and 1 mile above Waiehu Falls. 

Records available. — December 10, 1911, to December 31, 1912. 

Drainage area. — 22.40 square miles. 

Gage. — Friez automatic register. 

Channel. — Practically permanent. 

Discharge measurements. — Made from cable and car. 

Accuracy. — Records good. 

Discharge measurements of South Fork of Wailua River above Waiehu Falls, near Lihue, 

Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Feb. 18 


W. V. Hardy 


Feet. 
3.18 
4.93 
3.76 
3.46 


Sec.-ft. 
10.8 


Mar. 12 


do 


521 


Oct. 29 


do 


112 


Nov. 13 


do 


38.6 









Daily gage height, in feet, of South Fork of Wailua River above Waiehu Falls, near Lihue, 

Kauai, for 1912. 

[Gus Schilling, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


3.80 
3.83 
3.84 
3.84 
4.02 

3.76 
3.76 
3.92 
3.96 
3.88 

3. §8 
3.78 
3.66 
3.94 
3.76 


3.48 
3.44 
3.42 
3.38 
3.34 

3.30 
3.33 
3.34 
3.38 
3.38 

3.25 
3.13 
3.10 
3.09 
3.09 


3.52 
3.46 
3.50 
3.60 
3.36 

3.38 
3.47 
3.56 
4.62 
4.40 

5.10 
4.85 
6.08 
4.64 
4.20 


3.48 
3.42 
3.40 
3.60 
3.58 

3.95 
4.90 
4.09 
4.27 
4.00 

3.84 
3.72 
3.63 
3.66 
3.55 


3.55 
3.55 
3.64 
3.61 
3.65 

3.40 
3.39 
3.60 
3.50 
3.51 

3.52 
3.42 
3.58 
3.74 
4.08 


3.57 
3.52 
3.57 
3.70 
3.71 

3.60 
3.52 
3.65 
3.87 
3.54 

3.47 
3.44 
3.95 
3.75 
3.64 


3.32 
3.29 
3.24 
3.39 
3.55 

3.36 
3.55 
3.49 
3.41 
3.84 

4.14 

3.85' 

4.66 

6.26 

5.00 


3.63 
3.48 
3.40 
3.55 
3.60 

3.58 
3.54 
3.53 
3.50 
3.46 

3.52 
3.66 
3.89 
4.03 
3.78 


3.82 

3.88 
3.90 
3.90 
3.88 

4.25 
3.90 
3.93 
3.83 
3.72 

3.72 

3.64 
3.53 




3.66 
3.60 
3.60 
3.58 
3.98 

3.71 
3.66 
4.30 
4.20 
3.67 

3.59 
3.53 
3.46 
3.43 
3.40 


4.08 


2 


6.53 


3 


6.75 


4. 


4.78 


5 


4.22 


6 


4.01 


7 


3.93 


8 


4.68 


9 


4.12 


10 


3.91 


11 


3.87 


12 


3.79 


13 


3.74 


14 


3.40 1 

3.47 1 


3.65 


15 


3.60 



ISLAND OF KAUAI. 



67 



Daily gage height, in feet, of South Fork of Wailua River above Waiehu Falls, near Lihue, 
Kauai, for 1912 — Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 


3.70 
3.70 
3.68 
3.68 
3.60 

3.55 
3.60 
3.82 
3.61 
3.52 

3.45 
3.48 
3.50 
3.44 
3.43 
3.51 


3.11 
3.21 
3.31 
3.31 
3.34 

3.38 
3.58 
4.73 
3.96 
3.66 

3.56 
3.55 
3.52 
3.47 


3.98 
3.86 
3.80 
3.90 
3.74 

3.70 

3.70 
3.68 
3.65 
3.99 

3.76 
3.94 
3.98 
3.20 
3:50 
3.50 


3.78 
5.62 
4.26 
3.98 
4.00 

3.80 
3.81 
3.80 
3.60 
3.75 

3.66 
3.52 
3.53 
3.60 
3.57 


3.62 
3.51 
3.42 
3.32 
3.25 

3.29 
3.53 
3.48 
3.58 
3.45 

3.45 

3.98 
4.92 
4.32 
3.78 
3.64 




5.16 
4.08 
4.73 
4.08 
3.92 


3.67 

3.60 
3.58 
3.55 
3.52 

3.45 
3.52 
3.48 
3.47 
3.50 

3.48 
4.24 
3.55 
3.42 
3.94 
3.80 


3.54 
3.55 
3.55 
3.50 
3.50 

3.40 
3.40 
3.40 
3,40 
3.35 

3.30 
3.25 
3.20 
3.20 
3.20 


"*3." 80* 

3.86 
3.75 


3.32 
3.32 
3.40 
3.47 
3.39 

3.51 
3.80 
4.15 
3.83 
3.69 

3.66 
3.64 
3.61 
3.93 
3.96 


3.67 


17 


3.53 


18 


3.47 


19 


3.54 


20 : 


4.17 


21 


4.58 


22 






5.73 


23 






5.85 


24 . ... 






7.05 


25 






6.05 


26 






4.80 


27.. 


"*3."3i" 

3.30 


3.55 
3.58 
3.68 
4.06 
3.76 


4.05 


28 


3.70 


29 


3.62 


30 


3.60 


31 


3.59 







Note.— Gage heights for September affected by flow of water in float-well, but results are fair. Gage 
heights Oct. 1-28 not published because unreliable. 

Daily discharge, in second-feet, of South Fork of Wailua River above Waiehu Falls, near 

Lihue, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


115.0 
123.0 
126.0 
126.0 
177.0 

105.0 
105.0 
148.0 
159.0 
137.0 

137.0 
110.0 
81.2 
154.0 
105.0 

90.0 
90.0 
85.6 
85.6 
68.0 

59.0 
68.0 

120:0 

70.2 
53.6 

42.5 
47.0 
50.0 
41.0 
39.5 
51.8 


47.0 
41.0 
38.0 
32.6 
27.8 

23.0 

26.6 
27.8 
32.6 
32.6 

18.0 
7.4 
5.0 
4.5 
4.5 

5.8 
14.0 
24.2 
24.2 
27.8. 

32.6 
64.4 
442.0 
157.0 
81.2 

60.8 
59.0 
53.6 
45.5 


53.6 
44.0 
50.0 
68.0 
30.2 

32.6 

45.5 

60.8 

398.0 

311.0 

590.0 
490.0 
990.0 
406.0 
237.0 

165.0 
131.0 
115.0 
142.0 
100.0 

90.0 
90.0 
85.6 
79.0 
168.0 

105.0 
154.0 
165.0 
13.0 
50.0 
50.0 


47.0 

38.0 
35.0 
68.0 
64.4 

156.0 
510.0 
200.0 
262.0 
171.0 

126.0 
95.0 
74.6 
81.2 
59.0 

110.0 
798.0 
259.0 
165.0 
171.0 

115.0 
118.0 
115.0 
68.0 
102.0 

81.2 
53.6 
55.4 
68.0 
62.6 


59.0 
59.0 

76.8 
70.2 
79.0 

35.0 

33.8 
68.0 
50.0 
51.8 

53.6 
38.0 
64.4 
100.0 
197.0 

72.4 
51.8 
38.0 
25.4 
18.0 

22.0 

55.4 
47.0 
64.4 
42.5 

42.5 
165.0 
518.0 
281.0 
110.0 

76.8 


62.6 
53.6 
62.6 
90.0 
92.5 

68.0 
53.6 
79.0 
134.0 
57.2 

45.5 
41.0 
156.0 
102.0 
76.8 

73.0 
69.2 
65.4 
61.7 
57.9 

54.1 
50.3 
46.7 
42.9 
39.2 

35.4 
31.7 
28.0 
24.2 
23.0 


25.4 
22.0 
17.0 
33.8 
59.0 

30.2 
59.0 

48.5 
36.5 
126.0 

217.0 
128.0 
414.0 
1,080.0 
550.0 

614.0 
197.0 
442.0 
197.0 
148.0 

135.0 
123.0 
110.0 
97.2 
84.5 

71.8 
59.0 
64.4 
85.6 
190.0 
105.0 


74.6 
47.0 
35.0 
59.0 
68.0 

64.4 

57.2 
55.4 
50.0 
44.0 

53.6 

81.2 
139.0 
181.0 
110.0 

83.4 
68.0 
64.4 
59.0 
53.6 

42.5 
53.6 
47.0 
45.5 
50.0 

47.0 
251.0 
59.0 
38.0 
154.0 
115.0 


120.0 
137.0 
142.0 
142.0 
137.0 

255.0 
142.0 
151.0 
123.0 
95.0 

95.0 

76.8 
55.4 
35.0 
46.0 

57.2 
59.0 
59.0 
50.0 
50.0 

35.0 
35.0 
35.0 
35.0 
29.0 

23.0 

18.0 
13.0 
13.0 
13.0 


*ii5."6" 

131.0 
102.0 


81.2 

68.0 
68.0 
64.4 
165.0 

92.5 

81.2 

273.0 

237.0 

83.4 

66.2 
55.4 
44.0 
39.5 
35.0 

25.4 
25.4 
35.0 
45.5 
33.8 

51.8 
115.0 
220.0 
123.0 

87.8 

81.2 

76.8 

70.2 

151.0 

159.0 


197.0 


2 


1,220:0 

1,320.0 
462.0 


3 


4 


5 


244.0 


6 


174.0 


7 


151.0 


8 


422.0 


9 


210.0 


10 


145.0 


11 


134.0 


12 


112.0 


13 


100.0 


14 


79.0 


15 


68.0 


16 


83.4 


17 


55.4 


18 


45.5 


19 


57.2 


20 


227.0 


21 


382.0 


22 


842.0 


23 


890.0 


24 


1,500.0 


25 


975.0 


26 


470.0 


27 


187 


28 


90 


29 


72.4 


30 


68.0 


31 


66.2 







Note. — Discharge interpolated for days for which gage heights are missing from June 16-28. 



68 



WATER RESOURCES OF HAWAII, 1912. 



Monthly discharge of South Fork of Wailua River above Waiehu Falls, near Lihue, Kauai, 

for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January . . . 
February. . 

March 

April 

May 

June 

July 

August 

September. 

October 

November. 
December. 



177.0 
442.0 
990.0 
798.0 
518.0 
156.0 
,080.0 
251.0 
255.0 



39.5 
4.5 
13.0 
35.0 
18.0 
23.0 
17.0 
35.0 
13.0 



95.8 

50.4 

178.0 

144.0 

86.0 

62.6 

180.0 

75.8 

75.9 



5,890 
2,900 

10,900 
8,570 
5,290 
3,720 

11, 100 
4,660 
4,520 



273.0 
,500.0 



25.4 
45.5 



91.8 
356.0 



5,460 
21,900 



The period . 



84,900 



Note.— No record Oct. 1-2 



LIHUE DITCH NEAR LIHUE, KAUAI. 



Location. — About 5 miles northwest of Lihue, at point where Kauai Electric Co.'s 

power line crosses the ditch. 
Records available.— July 1, 1910, to December 31, 1912. 
Gage. — Vertical staff; read once each day, at 6 a. m.; datum unchanged. 
Channel. — Probably permanent. 

Discharge measurements. — Made by wading at various sections near gage. 
Accuracy. — Records good. 

Discharge measurements of Lihue ditch near Lihue, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 10 


W. V. Hardy 


Feet. 
1.12 
1.54 


Sec.-ft. 
7.57 


Nov. 13 




8.96 









Daily gage height, in feet, of Lihue ditch near Lihue, Kauai, for 1912. 
[Mori, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




1.0 
1.0 

.9 

.9 

.9 

.9 

.9 

.9 
1.0 
1.0 

1.0 
.95 
.95 

.85 
.85 

.85 
.85 
.85 
.85 
.85 


1.4 
1.4 
1.4 
1.4 
1.4 

1.4 
1.1 
1.1 
1.1 
1.1 

1.25 

1.3 

1.3 

1.3 

1.3 


0,9 
1.1 
1.05 
1.1 

1.0 
1.0 
1.0 
1.2 
1.2 

1.2 

1.2 

.6 

.6 

.6 


1.4 
1.4 
1.5 
1.5 
1.5 

1.5 

1.45 

1.5 

1.5 

1.4 

1.4 
1.4 
1.4 
1.5 
1.5 

1.5 
1.4 
1.4 
1.4 
1.4 


1.6 

1.55 

1.55 

1.6 

1.6 

1.5 
1.5 
1.5 
1.6 
1.6 

1.55 
1.5 
1.5 
1.6 
1.6 

1.5 
1.5 
1.5 
1.5 
1.5 


1.55 

1.55 

1.5 

1.5 

1.5 

1.5 
1.6 
1.6 
1.6 
1.6 

1.6 
1.6 
1.6 
1.6 

1.5 

1.65 

1.6 

1.6 

1.6 


1.5 
1.5 
1.5 
1.5 
1.55 

1.6 
1.6 
1.6 
1.6 
1.6 

1.6 

1.6 

1.6 

1.65 

1.6 

1.6 
1.6 
1.6 
1.6 
1.6 


1.65 

1.65 

1.6 

1.6 

1.6 

1.6 

1.6 

1.6 

1.55 

1.5 

1.5 

1.45 

1.45 

1.45 

1.45 

1.45 
1.45 
1.45 
1.45 
1.5 


1.55 
1.50 
1.60 
1.55 
1.60 

1.60 
1.60 
1.60 
1.55 
1.70 

1.70 
1.65 
1.65 
1.65 
1.65 

1.65 
1.65 
1.65 
1.70 
1.65 


1.55 
1.60 
1.60 
1.60 
1.70 

1.70 
1.65 
1.65 
1.66 
1.65 

1.62 
1.50 
1.52 
1.50 
1.50 

1.45 

1.45 
1.50 
1.55 
1.60 


1.55 


2 : 




1.60 


3 




1.60 


4 




.70 


5 






6 


0.9 
.9 
.9 
.9 
.9 

.9 
.9 
.9 
.9 
.9 

.9 
.9 
.9 
.9 
1.1 




7 




8 




9 




10 




11 




12 




13 




14 




15 




16 




17 


1.49 


18 


1.49 


19 


1.55 


20 


1.70 



ISLAND OF KAUAI. 



69 



Daily gage height, in feet, of Lihue ditch near Lihue, Kauai, for 1912 — Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


21 


1.1 
1.1 
1.4 
1.4 
1.4 

1.2 
1.2 
1.2 
1.2 
1.2 
1.2 


0.85 

1.1 

1.1 

1.2 

1.2 

1.2 
1.2 
1.2 

1.4 


" "6.'9" 
.9 
.9 

.9 
.9 
.9 
.9 
.9 
.9 


0.6 
.6 
.6 

1.4 

1.4 

1.4 

1.35 

1.35 

1.4 

1.4 


1.5 
1.5 
1.5 
1.5 
1.5 

1.5 
1.5 
1.6 
1.6 
1.6 
1.6 


1.55 


1.6 

1.6 

1.5 

1.55 

1.5 

1.5 

1.5 

1.55 

1.55 

1.55 

1.55 


1.55 

1.6 

1.6 

1.55 

1.6 

1.6 

1.6 

1.6 

1.65 

1.65 

1.65 


1.5 
1.5 
1.5 
1.5 
1.4 

1.4 

1.4 

1.4 

1.55 

1.6 


1.65 
1.65 
1.65 
1.60 
1.60 

1.70 
1.70 
.95 
1.65 
1.50 
1.50 


1.63 
1.65 
1.36 
1.36 
1.36 

"i.45' 


1.50 


22 


1 

1 
1 

1 

1 
1 
1 
1 
1 


6 
6 
6 

55 

55 

55 

55 

5 

5 


1.60 


23 


1.45 


24 


1.55 


25 


1.35 


26 


1.30 


27 


1.30 


28 


1.30 


29 


1.30 


30 


1.30 


31 


1.25 









Note.— Ditch dry Jan. 1-5, Mar. 16-22, Apr. 5-10, July 15, Nov. 26-29, and Dec. 5-16. 

Daily discharge, in second-feet, of Lihue ditch near Lihue, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




5.8 
5.8 
5.1 
5.1 
5.1 

5.1 
5.1 
5.1 
5.8 
5.8 

5.8 
5.4 
5.4 
4.8 
4.8 

4.8 
4.8 
4.8 

4.8 
4.8 

4.8 
6.5 
6.5 

7.2 
7.2 

7.2 
7.2 

7.2 
8.8 


8.8 
8.8 
8.8 
8.8 
8.8 

8.8 
6.5 
6.5 
6.5 
6.5 

7.6 
8.0 
8.0 
8.0 
8.0 

"5.Y 

5.1 
5.1 

5.1 
5.1 
5.1 
5.1 
5.1 
5.1 


5.1 
6.5 
6.2 
6.5 

5.8 
5.8 
5.8 
7.2 
7.2 

7.2 
7.2 
3.1 
3.1 
3.1 

3.1 
3.1 
3.1 

8.8 
8.8 

8.8 
8.4 
8.4 
8.8 
8.8 


8.8 
8.8 
9.6 
9.6 
9.6 

9.6 
9.2 
9.6 
9.6 

8.8 

8.8 
8.8 
8.8 
9.6 
9.6 

9.6 
8.8 
8.8 
8.8 

8.8 

9.6 
9.6 
9.6 
9.6 
9.6 

9.6 
9.6 
10.4 
10.4 
10.4 
10.4 


10.4 
10.0 
10.0 
10.4 
10.4 

9.6 

9.6 

9.6 

10.4 

10.4 

10.0 

9.6 

9.6 

10.4 

10.4 

9.6 
9.6 
9.6 
9.6 
9.6 

10.0 
10.4 
10.4 
10.4 
10.0 

10.0 

10.0 

10.0 

9.6 

9.6 


10.0 
10.0 
9.6 
9.6 
9.6 

9.6 
10.4 
10.4 
10.4 
10.4 

10.4 
10.4 
10.4 
10.4 

9.6 
10.8 
10.4 
10.4 
10.4 

10.4 
10.4 

9.6 
10.0 

9.6 

9.6 
9.6 
10.0 
10.0 
10.0 
10.0 


9.6 
9.6 
9.6 
9.6 
10.0 

10.4 
10.4 
10.4 
10.4 
10.4 

10.4 
10.4 
10.4 
10.8 
10.4 

10.4 
10.4 
10.4 
10.4 
10.4 

10.0 

10.4 
10.4 
10.0 
10.4 

10.4 
10.4 
10.4 
10.8 
10.8 
10.8 


10.8 
10.8 
10.4 
10.4 
10.4 

10.4 
10.4 
10.4 
10.0 
9.6 

9.6 
9.2 
9.2 
9.2 
9.2 

9.2 
9.2 
9.2 
9.2 
9.6 

9.6 
9.6 
9.6 

9.6 

8.8 

8.8 
8.8 
8.8 
10.0 
10.4 


10.0 
9.6 
10.4 
10.0 
10.4 

10.4 
10.4 
10.4 
10.0 
11.2 

11.2 
10.8 
10.8 
10.8 
10.8 

10.8 
10.8 
10.8 
11.2 
10.8 

10.8 
10.8 
10.8 
10.4 
10.4 

11.2 

11.2 

5.4 

10.8 

9.6 

9.6 


10.0 
10.4 
10.4 
10.4 
11.2 

11.2 
10.8 
10.8 
10.9 
10.8 

10.6 
9.6 
9.8 
9.6 
9.6 

9.2 

9.2 

9.6 

10.0 

10.4 

10.6 

10.8 
8.5 

8.5 
8.5 

""§.2 


10.0 


2 




10.4 


3 




10.4 


4 




3.7 


5 






6 


5.1 
5.1 
5.1 
5.1 
5.1 

5.1 
5.1 
5.1 
5.1 
5.1 

5.1 
5.1 
5.1 
5.1 
6.5 

6.5 
6.5 
8.8 

8.8 
8.8 

7.2 
7.2 
7.2 
7.2 
7.2 
7.2 




7 




8 




9 




10 




11 




12 




13 




14 




15 




16 




17 


9.5 


18 


9.5 


19 


10.0 


20 


11.2 


21 


9.6 


22 


10.4 


23 


9.2 


24 


10.0 


25 


8.4 


26 


8.0 


27 


8.0 


28 


8.0 


29 


8.0 


30 


8.0 


31 


7.6 







Note.— Ditch dry Jan. 1-5, Mar. 16-22, Apr. 5-10, July 15, Nov. 26-29, and Dec. 5-16. 
Monthly discharge of Lihue ditch near Lihue, Kauai, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 6-31 

February 

March 1-15, 23-31... 

April 1-4, 11-30 

May 

June 

July 1-14, 16 -31 

August 

September 

October 

November 1-25, 30. . 
December 1-4, 17-31 

The year 



8.8 



8.8 
10.4 
10.4 
10.8 
10.8 
10.8 
11.2 
11.2 
11.2 



5.1 
4.8 
5.1 
3.1 
8.8 
9.6 
9.6 
9.6 
8.8 
5.4 
8.5 
3.7 



6.17 

5.74 

6.85 

6.25 

9.43 

9.97 

10.10 

10.30 

9.68 

10.40 

10.00 

8.94 



318 
330 
326 
297 
580 
593 
601 
633 
576 
640 
517 
337 



11.2 



3.1 



8.76 



5,750 



Note.— Ditch dry Jan. 1-5, Mar. 16-22, Apr. 5-10, July 15, Nov. 26-29, Dec. 5-16. 
Mean for month is mean of actual number of days when ditch carried water. Mean for year is mean of 
actual number of days when ditch carried water. 



70 



WATER RESOURCES OP HAWAII, 1912. 



HANAMAULU DITCH AT SIPHON NEAR LIHUE, KATJAI. 

Location. — About 6 miles northwest of Lihue, in flume 180 feet above point at which 
the Kauai Electric Co.'s power line crosses the South Fork of Wailua River. 

Records available. — July 1, 1910, to December 31, 1912. 

Gage. — Vertical staff; read once daily at 6 a. m. September 30, 1911, a gage was 
installed on left side of flume, 18 feet from its upper end. 

Channel. — Wooden flume. 

Discharge measurements. — Made in flume. 

Accuracy. — Records good. 

Discharge measurements o/Hanamaulu ditch at siphon near Lihue, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 10 


W. V. Hardy 


Feet. 
0.80 
1.52 
2.28 


Sec.-ft. 
6.22 


Do .. 


do. ..... . 


20.8 


Nov. 13 




38.8 









Daily gage height, in feet, of Hanamaulu ditch at siphon near Lihue, Kauai, for 1912. 

[Mori, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.10 
1.10 
1.10 
1.10 
1.10 

1.10 
1.10 
1.10 
1.10 
1.10 

.70 
1.10 
1.10 
1.10 
1.10 

1.10 
1.10 
1.10 
1.10 
1.85 

1.85 
1.80 
1.80 
1.80 
2.10 

2.10 
2.10 
2.10 
2.30 
2.30 
2.20 


2.50 
2.50 
2.50 
2.50 
2.45 

2.50 
2.50 
2.45 
2.50 
2.40 

2.40 
2.40 
2.40 
2.40 
2.40 

2.40 
2.40 
2.35 
2.35 
2.35 

2.35 

2.50 
2.50 
2.50 
2.50 

2.50 
2.20 
2.20 
2.40 


2.40 
2.40 
2.50 
2.40 
2.40 

2.40 
2.30 
2.30 
2.30 
1.30 

1.35 
1.30 
1.30 
1.00 
1.00 

1.00 
1.00 
1.30 
1.30 
1.30 

1.30 
2.00 
2.00 
2.00 
2.00 

1.80 
1.80 
1.80 
1.80 
1.80 
1.80 


1.80 
1.80 
1.80 
1.85 
2.15 

2.15 
2.30 
2.25 
2.15 
2.15 

2.10 

2.05 
2.10 
2.10 
2.10 

2.15 
2.25 
1.40 
1.40 
1.40 

1.40 
1.40 
1.40 
2.25 
2.25 

2.20 
2.20 
2.20 
2.20 
2.20 


2.20 
2.20 
2.50 
2.50 
2.50 

2.50 

2.45 
2.50 
2.50 
2.40 

2.40 
2.50 
2.50 
2.50 
2.50 

2.50 
2.50 
2.45 
2.40 
2.40 

2.50 
2.50 
2.50 
2.50 
2.50 

2.55 
2.55 
2.55 
2,55 
2.50 
2.50 


2.50 
2.40 
2.40 
2.40 
2.40 

2.40 
2.40 
2.40 
2.40 
2.40 

2.40 
2.40 
2.40 
2.40 
2.40 

2.40 
2.45 
2.30 
2.30 
2.30 

2.45 
2.45 
2.45 
2.45 
2.40 

2.40 
2.40 
2.40 
2.40 
2.40 


2.40 
2.40 
2.30 
2.30 
2.30 

2.35 

2..40 
2.40 
2.45 
2.45 

2.45 
2.45 
2.45 
2.45 
2.45 

2.20 
2.45 
2.45 
2.45 
2.45 

2.45 
2.40 
2.40 
2.40 
2.40 

2.40 
2.45 
2.45 
2.40 
2.45 
2.45 


2.40 
2.40 
2.25 
2.25 
2.40 

2.45 

2.45 
2.45 
2.50 
2.50 

2.50 

2.40 
2.35 
2.35 
2.50 

2.40 
2.45 
2.40 
2.40 
2.35 

2.35 

2.40 
2.40 
2.40 
2.45 

2.45 
2.45 
2.45 
2.45 
2.45 
2.45 


2.45 
2.45 
2.45 
2.45 
2.45 

2.45 
2.45 
2.45 
2.40 
2.30 

2.30 

2.25 
2.25 
2.25 
2.25 

2.45 
2.40 
2.40 
2.40 
2.45 

2.45 
2.45 
2.40 
2.40 
2.40 

2.40 
2.40 
2.40 
2.40 
2.45 


2.45 

2.40 
2.45 
2.45 
2.45 

2.45 
2.45 
2.45 
2.45 
2.45 

2.50 
2.45 
2.45 
2.35 
2.35 

2.35 

2.45 
2.45 
2.45 
2.45 

2.45 
2.45 
2.45 
2.40 
2.40 

2.45 
2.45 
2.45 
2.43 
2.45 
2.45 


2.30 
2.15 
2.15 
2.25 
2.45 

2.45 
2.40 
2.45 
2.45 
2.45 

2.43 

2.25 
2.26 
2.25 
2.25 

2.25 

2.25 
2.25 
2.30 
2.45 

2.45 
2.40 
1.30 
1.30 
1.30 

(a) 

(a) 

2.40 

2.45 

2.30 


2.25 


2 


2.30 


3 


2.30 


4 


1.30 


5 


.90 


6 

7 


.90 
.90 


8 


1.00 


9 


.90 


10 


.90 


11 


.90 


12 


.90 


13 


2.05 


14 


2.00 


15 


2.00 


16 


2.00 


17 


2.05 


18 


2.05 


19 


2.25 


20 


2.45 


21 


2.30 


22 


2.30 


23 


2.30 


24 


2.40 


25 


2.30 


26 


2.25 


27 


2.25 


28 


2.25 


29 


2.25 


30 


2.20 


31 


2.20 







Ditch dry Nov. 26-27. 



ISLAND OF KAUAI. 71 

Daily discharge, in second-feet, of Hanamaulu ditch at siphon near Lihue, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


11.0 
11.0 
11.0 
11.0 
11.0 

11.0 
11.0 
11.0 
11.0 
11.0 

5.0 
11.0 
11.0 
11.0 
11.0 

11.0 
11.0 
11.0 
11.0 
28.0 

28.0 
27.0 
27.0 
27.0 
34.0 

34.0 
34.0 
34.0 
39.0 
39.0 
37.0 


44.0 
44.0 
44.0 
44.0 
43.0 

44.0 
44.0 
43.0 
44.0 
42.0 

42.0 
42.0 
42.0 
42.0 
42.0 

42.0 
42.0 
40.5 
40.5 
40.5 

40.5 
44.0 
44.0 
44.0 
44.0 

44.0 
37.0 
37.0 
42.0 


42.0 
42.0 
44.0 
42.0 
42.0 

42.0 
39.0 
39.0 
39.0 
15.0 

16.0 

15.0 

15.0 

9.2 

9.2 

9.2 

9.2 

15.0 

15.0 

15.0 

15.0 
32.0 
32.0 
32.0 
32.0 

27.0 
27.0 
27.0 
27.0 
27.0 
27.0 


27.0 
27.0 
27.0 
28.0 
35.5 

35.5 
39.0 
38.0 
35.5 
35.5 

34.0 
33.0 
34.0 
34.0 
34.0 

35.5 
38.0 
17.0 
17.0 
17.0 

17.0 
17.0 
17.0 
38.0 
38.0 

37.0 
37.0 
37.0 
37.0 
37.0 


37.0 
37.0 
44.0 
44.0 
44.0 

44.0 
43.0 
44.0 
44.0 
42.0 

42.0 

44.0 
44.0 
44.0 
44.0 

44.0 
44.0 
43.0 
42.0 
42.0 

44.0 
44.0 
44.0 
44.0 
44.0 

45.0 
45.0 
45.0 
45.0 
44.0 
44.0 


44.0 
42.0 
42.0 
42.0 
42.0 

42.0 
42.0 
42.0 
42.0 
42.0 

42.0 

42.0 
42.0 
42.0 
42.0 

42.0 
43.0 
39.0 
39.0 
39.0 

43.0 
43.0 
43.0 
43.0 
42.0 

42.0 
42.0 
42.0 
42.0 
42.0 


42.0 
42.0 
39.0 
39.0 
39.0 

40.5 
42.0 
42.0 
43.0 
43.0 

43.0 
43.0 
43.0 
43.0 
43.0 

37.0 
43.0 
43.0 
43.0 
43.0 

43.0 
42.0 
42.0 
42.0 
42.0 

42.0 
43.0 
43.0 
42.0 
43.0 
43.0 


42.0 
42.0 
38.0 
38.0 
42.0 

43.0 
43.0 
43.0 
44.0 
44.0 

44.0 
42.0 
40.5 
40.5 
44.0 

42.0 
43.0 
42.0 
42.0 
40.5 

40.5 
42.0 
42.0 
42.0 
43.0 

43.0 
43.0 
43.0 
43.0 
43.0 
43.0 


43.0 
43.0 
43.0 
43.0 
43.0 

43.0 
43.0 
43.0 
42.0 
39.0 

39.0 
38.0 
38.0 
38.0 
38.0 

43.0 
42.0 
42.0 
42.0 
43.0 

43.0 
43.0 
42.0 
42.0 
42.0 

42.0 

42.0 
42.0 
42.0 
43.0 


43.0 
42.0 
43.0 
43.0 
43.0 

43.0 
43.0 
43.0 
43.0 
43.0 

44.0 
43.0 
43.0 
40.5 
40.5 

40.5 
43.0 
43.0 
43.0 
43.0 

43.0 
43.0 
43.0 
42.0 
42.0 

43.0 
43.0 
43.0 
42.6 
43.0 
43.0 


39.0 
35.5 
35.5 
38.0 
43.0 

43.0 
42.0 
43.0 
43.0 
43.0 

42.6 
38.0 
38.2 
38.0 
38.0 

38.0 
38.0 
38.0 
39.0 
43.0 

43.0 
42.0 
15.0 
15.0 
15.0 

Dry. 

Dry. 
42.0 
43.0 
39.0 


38.0 


2 


39.0 


3 


39.0 


4 


15.0 


5 


7.6 


6 


7.6 


7 


7.6 


8 


9.2 


9 


7.6 


10 


7.6 


11 


7.6 


12 


7.6 


13 


33.0 


14 


32.0 


15 


32.0 


16 


32.0 


17 


33.0 


18 


33.0 


19 


38.0 


20 


43.0 


21 


39.0 


22 


39.0 


23 


39.0 


24 


42.0 


25 


39.0 


26 


38.0 


27 


38.0 


28 


38.0 


29 


38.0 


30 


37.0 


31 


37.0 







Monthly discharge of Hanamaulu ditch at siphon near Lihue, Kauai, for 1912. 



Month. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November a 

December 

The period 



Discharge in second-feet. 



Maximum. 



39.0 
44.0 
44.0 
39.0 
45.0 
44.0 
43.0 
44.0 
43.0 
44.0 
43.0 
43.0 



45.0 



Minimum. 



5.0 
37.0 

9.2 
17.0 
37.0 
39.0 
37.0 
38.0 
38.0 
40.5 
15.0 

7.6 



5.0 



Mean. 



19.1 
42.3 
26.4 
31.1 
43.4 
41.9 
42.0 
42.2 
41.7 
42.7 
37.5 
28.8 



&36.5 



Run-off 
(total in 
acre-feet). 



1,170 
2,430 
1,620 
1,850 
2,670 
2,490 
2,580 
2,590 
2,480 
2,630 
2,080 
1,770 



26,400 



Accu- 
racy. 



a Ditch dry Nov. 26-27. & Mean for year is mean for 364 days when ditch carried water. 

NORTH FORK OF WAILXJA RIVER NEAR LIHUE, KAUAI. 

Location. — About 8 miles northwest of Lihue, and 2 miles above the Kaholalele Falls. 
Records available.— August 1, 1910, to October 28, 1910; December 28, 1910, to 

December 31, 1912. 
Drainage area. — 14.63 square miles. 
Gage. — Friez automatic register; datum unchanged. 
Channel. — Practically permanent. 

Discharge measurements. — Made from a footbridge and wire suspension bridge. 
Accuracy. — Record good. 



72 WATER RESOURCES OF HAW An, 1912. 

Discharge measurements of North Fork of Wailua River near Lihue, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Feb. 18 


W. V. Hardy 


Feel. 
0.45 
2.40 
.62 


Sec.-ft. 
19.4 


Mar. 11 


do 


358 


July 31 


do 


43.0 







Daily gage height, in feet, of North Fork of Wailua River near Lihue, Kauai, for 1912. 

[Mori, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.85 

.86 

.87 

1.08 

1.04 

.98 

.97 

1.16 

1.19 

1.03 

.96 
.95 
.96 
1.23 
.97 

.90 
.89 
.88 
.86 
.86 

.84 
.81 
.83 

.78 

.77 

.76 
.76 
.74 
.75 
.75 
.75 


0.75 

.75 
.75 
.60 
.57 

.59 
.59 
.54 

.48 
.47 

.47 
.46 
.45 
.45 
.45 

.45 
.45 
.45 
.45 
.45 

.45 

.46 

1.40 

.80 

.77 

.77 
.74 
.73 
.72 


0.82 
.69 
.94 
.70 
.64 

.65 

.70 

.72 

1.66 

1.66 

1.98 
1.90 
2.95 
1.82 
1.44 

1.20 

1.16 

1.08 

.92 

.92 

.87 
1.05 

.90 
1.14 
1.64 

1.00 
.90 
.86 
.82 
.84 
.84 


0.81 

.78 
.77 
.95 
.92 

1.14 
1.92 
1.21 
1.35 
1.01 

.92 
.86 
1.01 
.98 
.84 

1.08 
3.04 
1.56 
1.23 
1.30 

1.14 
1.12 
1.06 
.93 
1.01 

.95 
.85 
.81 
.80 
.80 


0.79 
.79 
.88 
.92 
.81 

.78 
.78 
.84 
.76 
.76 

.66 
.60 
.60 
.82 
.92 

.61 
.60 
.60 
.60 
.60 

.62 
.65 
.65 
.72 
■ fe> 

.60 
.86 
1.66 
1.15 
.72 
.62 


0.62 
.65 
.73 

.84 
.68 

.66 
.65 
.68 
.68 
.68 

' .68 
.68 
.92 
.72 
.70 

.70 
.70 
.70 
.75 
.70 

.76 
.70 
.50 
.82 
.50 

1.20 
.90 

.57 
.50 
.50 


0.50 
.52 

.54 
.56 

.58 

.60 
.82 
.61 
.62 
1.02 

1.40 
.82 
1.74 
2.93 
2.00 

1.28 
1.96 
1.20 
1.01 
1.00 

1.06 
.96 
.91 

1.04 
.81 

.96 
.74 
.65 
.65 
.72 
.63 


0.57 
.50 
.50 
.49 
.64 

.70 
.76 
.82 
.81 
.60 

.54 
.50 
.50 
1.45 
.89 

.66 
.60 
.52 
.50 
.49 

.50 
.76 
.59 
.68 
.60 

.80 
1.59 

.81 

.84 
1.27 

.92 


0.93 
.99 

.88 
.72 
.60 

1.25 
.76 

.68 
.62 
.58 

.64 
.58 
.52 
.49 
.47 

.57 
.54 
.47 
.50 
.51 

.52 
.76 
.52 
.47 
.44 

.42 
.42 
.44 
.46 
.53 


0.76 
.48 
.82 
.82 
.80 

.58 
.70 
.94 
.68 
.74 

1.01 
.83 
.62 
.61 
.56 

.57 

.67 

.69 

1.06 

1.06 

1.17 
.97 

.88 
.67 
.84 

1.32 

.88 
.97 
.81 
.77 
.73 


0.62 

.58 
.58 
.56 

""."63" 
1.12 

1.08 

.77 

.68 
.61 
.55 
.52 

.58 

.52 

"i.'io" 

1.37 
.98 

.85 

.76 
.63 
.70 
1.28 
.98 


1.42 


2 


3.12 


3 


3.52 


4 


2.33 


5 


1.67 


6 


1.32 


7 


1.19 


8 


1.81 


9 


1.25 


10 


1.09 


11 


.93 


12 


.86 


13 


.83 


14 


.77 


15 


.78 


16 . .. 


.82 


17 


.61 


18 


.60 


19 


1.10 


20 


1.06 


21 


1.36 


22 


1.63 


23 


1.77 


24 


3.14 


25 


1.92 


26 


1.44 


27 


1.17 


28 


1.03 


29 


.90 


30 


.86 


31 


.85 







Note.— Low water gage heights previous to July 25 may be high by 0.1 to 0.3 on account of mud in float 
well. No record Nov. 17-21. 

Daily discharge, in second-feet, of North Fork of Wailua River near Lihue, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


54.5 
55.6 
56.7 
82.4 
77.2 

69.6 
68.4 
93.4 
97.6 
75.9 

67.2 
66.0 
67.2 
104.0 
68.4 


44.0 
44.0 
44.0 
30.0 
27.9 

29.3 
29.3 
25.8 
21.8 
21.2 

21.2 
20.6 
20.0 
20.0 
20.0 


51.2 
38.1 
64.8 
39.0 
33.6 

34.5 

39.0 

41.0 

179.0 

179.0 

255.0 
234.0 
571.0 
215.0 
137.0 


50.1 
47.0 
46.0 
66.0 
62.4 

90.6 
239.0 
100.0 
123.0 

73.3 

62.4 
55.6 
73.3 
69.6 
53.4 


48.0 
48.0 
57.8 
62.4 
50.1 

47.0 

47.0 
53.4 
45.0 
45.0 

35.4 
30.0 
30.0 
51.2 
62.4 


31.8 
34.5 
42.0 
53.4 
37.2 

35.4 
34.5 
37.2 
37.2 
37.2 

37.2 
37.2 
62.4 
41.0 
39.0 


23.0 
24.4 
25.8 
27.2 
28.6 

30.0 
51.2 
30.9 
31.8 
74.6 

130.0 
51.2 
196.0 
563.0 
260.0 


27.9 
23.0 
23.0 
22.4 
33.6 

39.0 
45.0 
51.2 
50.1 
30.0 

25.8 
23.0 
23.0 
138.0 
58.9 


63.6 

70.8 
57.8 
41.8 
30.0 

106.0 
45.0 
37.2 
31.8 
28.6 

33.6 
28.6 
24.4 
22.4 
21.2 


45.0 
21.8 
51.2 
51.2 
49.0 

28.6 
39.0 
64.8 
37.2 
43.0 

73.3 
52.3 
31.8 
30.9 
27.2 


31.8 
28.6 
28.6 
27.2 
29.0 

30.9 
32.7 

87.8 
82.4 
46.0 

37.2 
30.9 
26.5 
24.4 
28.6 


133.0 


2 


638.0 


3 


809.0 


4 


356.0 


5 


181.0 


6 


117.0 


7 


97.6 


8 


212.0 


9 


106.0 


10 


83.7 


11 


63.6 


12 


55.6 


13 


52.3 


14 


46.0 


15 


47.0 



ISLAND OF KAUAI. 



73 



Daily discharge, in second-feet, of North Fork of Wailua River, near Lihue, Kauai, for 

1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 


60.0 
58.9 
57.8 
55.6 
55.6 

53.4 
50.1 
52.3 
47.0 
46.0 

45.0 
45.0 
43.0 
44.0 
44.0 
44.0 


20.0 
20.0 
20.0 
20.0 
20.0 

20.0 
20.6 
130.0 
49.0 
46.0 

46.0 
43.0 
42.0 
41.0 


99^0 
93.4 
82.4 
62.4 
62.4 

56.7 
78.5 
60.0 
90.6 
174.0 

72.0 
60.0 
55.6 
51.2 
53.4 
53.4 


82.4 
606.0 
158.0 
104.0 
114.0 

90.6 
87.8 
79.8 
63.6 
73.3 

66.0 
54.5 
50.1 
49.0 
49.0 


30.9 
30.0 
30.0 
30.0 
30.0 

31.8 
34.5 
34.5 
41.0 
30.0 

30.0 
55.6 
179.0 
92.0 
41.0 
31.8 


39.0 
39.0 
39.0 
44.0 
39.0 

45.0 
39.0 
23.0 
51.2 
23.0 

99.0 
60.0 
27.9 
23.0 
23.0 


111.0 

250.0 

99.0 

73.3 

72.0 

79.8 
67.2 
61.2 
77.2 
50.1 

67.2 
43.0 
34.5 
34.5 
41.0 
32.7 


35.4 
30.0 
24.4 
23.0 
22.4 

23.0 
45.0 
29.3 
37.2 
30.0 

49.0 
164.0 

50.1 

53.4 
110.0 

62.4 


27.9 
25.8 
21.2 
23.0 
23.7 

24.4 
45.0 
24.4 
21.2 
19.4 

18.2 
18.2 
19.4 
20.6 
25.1 


27.9 
36.3 
38.1 
79.8 
79.8 

94.8 
68.4 
57.8 
36.3 
53.4 

117.0 
57.8 
68.4 
50.1 
46.0 
42.0 


24.4 

"*85.'6" 
125.0 

54^5 

45.0 
32.7 
39.0 
111.0 


51.2 


17 


30.9 


18 


30.0 


19 


85.0 


20 


79.8 


21 


124.0 


22 


172.0 


23 


203.0 


24 


647.0 


25 


239.0 


26 


137 


27 


94.8 


28 


75 9 


29 


60 


30 


55.6 


31 


54.5 







Monthly discharge of North Fork of Wailua River near Lihue, Kauai, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. 



Minimum. 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March , 

April.. 

May 

June 

July 

August 

September 

October 

November a 

December 

The period 



104 
130 
571 
606 
179 
t 99 
563 
164 
106 
117 
125 



43.0 
20.0 
33.6 
46.0 
30.0 
23.0 
23.0 
22.4 
18.2 
21.8 
24.4 
30.0 



61.5 
33.0 

107.0 
79.8 
47.3 
40.4 
88.4 
45.2 
33.3 
51.6 
49.1 

166.0 



3,780 
1,900 
6,580 
4,750 
2,910 
2,400 
5,440 
2,780 
1,980 
3,170 
2,440 
10,200 



18.2 



6 67.5 



48,300 



a No record Nov. 17-21. Mean for November is mean of 25 days. 
b Mean for the year is mean of 361 days. 

UHAU IOLE STREAM AT 750-FOOT ELEVATION NEAR LIHUE, KAUAI. 

Location. — About 11 miles northwest of Lihue, 3 miles from boundary of forest 

reserve, and 400 feet below falls. 
Records available.— From July 28, 1912, to December 31, 1912. 
Drainage area. — 1.21 square miles. 

Gage. — A vertical staff gage; read once a week; datum unchanged. 
Channel. — Practically permanent. 
Discharge measurements. — Made by wading. 

Discharge measurements of TJhau Iole Stream at 750-foot elevation near Lihue, Kauai, in 

1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


May 5 


W. V. Hardy 


Feet. 

a 5. 20 
4.73 
5.15 
4.96 


Sec.-ft. 
3.83 


July 28 
Oct. 20 


do 

.....do 


5.91 
17.3 


Do... 


do . 


11.2 









a Gage height of no value, as water level was disturbed in cleaning channel to make good measuring section. 



74 

Daily gage 



in feet, of Uhau Iole Stream at 750-foot elevation near Lihue, Kauai, 
for 1912. 

[S. Takabayasbi, observer.] 



Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1. 




4.65 






5.12 


16 












2. 








17 








4.68 




3 








4.70 




18 

19 


4.63 








4 


4.69 














5 










20 






5.18 






6 






4.63 






21 










7 










22 




4.65 






4.85 


8. 




4.70 






5.36 


23 










9. 








24 








4.71 




10 








4.71 




25 

26 


4.62 








11. 


4.70 








- 






12. 






4.70 




27 






4.74 






13. 






4.70 


28 










14.... 










29 




4.61 






4.98 


15 




4.63- 






4.84 


30 


















31 



























EAST BRANCH OF NORTH FORK OF WAILTJA RIVER NEAR LIHUE, KAUAI. 

Location. — About 8 miles northwest of Lihue, 600 feet above gaging station on the 
North Wailua, and 400 feet above the confluence of the north and east branches 
of North Wailua River. 

Records available. — July 27, 1912, to December 31, 1912. 

Gage. — Inclined staff gage; read once a day, about lp.m.; datum unchanged. 

Channel. — Practically permanent. 

Discharge measurements. — Made by wading. 

Discharge measurements of East Branch of North Fork of Wailua River at 300-foot 
elevation near Lihue, Kauai, in 1912. 



Date. 



Hydrograpber. 



Gage 
beigbt. 



Dis- 
cbarge. 



July 31 
Oct. 21 



W. V. Hardy. 
do 



Feet. 
6.35 
6.70 



Sec.-ft. 
28.0 
60.4 



Daily gage height, in feet, of East Branch of North Fork of Wailua River at 300-foot 
elevation near Lihue, Kauai, for 1912. 

[Mori and Takabayasbi, observers.] 



Day. 


July. 


Aug. 


Sept. 


Oct.' 


Nov. 


Dec. 


Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




6.32 


6.40 
6 50 
6.45 
6.40 
6.40 

6.60 
6.45 
6.38 
6.40 
6.33 

6.30 
6.30 

"6."28" 
6.26 


6 50 

6.80 
6.80 
6.32 
6.30 

6.27 

6.28 
6.45 
6.35 
6.32 

6.90 
6.45 
6.37 
6.35 
6.32 


6.42 
6.35 
6.32 

'6."56" 

6.50 
6.45 
6.47 
6.65 
6.88 

6.42 
6.32 
6.32 
6.30 
6.32 


6.70 

"~6.' 15 
6.13 

6.90 
6.72 
6.71 
6.63 
6.62 

""6." 59 
6.52 
6.50 
6.38 


16 




6.45 
6.40 
6.31 
6.35 
6.32 

6.30 
6.30 
6.30 
6.28 
6.32 

6.40 
6.60 
6.40 
6.40 
6.50 
6.45 


6.25 
6.25 
6.25 
6.25 
6.30 

6.28 
6.29 
6.25 
6.23 
6.22 

6.20 
6.20 
6.21 
6.23 
6.25 


6.30 
6.40 
6.35 
6.52 
6.40 

6.70 
6.50 
6.45 
6.42 
6.41 

6.48 
6.42 
6.46 
6.48 
6.49 
6.48 


6.32 
6.29 
6.33 
6.48 
6.40 

"6.'68" 
6.76 
6.37 


6.40 


2 




17 




6.40 


3 




6.30 
6.28 
©.27 

6.40 
6.45 
6.40 
6.40 
6.32 

6.30 
6.30 
6.30 


18 




6.40 


4 




19 




6.38 


5 




20 




6.62 


6 




21 




6.15 


7 




22 




7.23 


8 




23 




6.72 


9 




24 






10 




25 






11... 




26 




6.32 
6.30 

"6." 65" 


6.64 


12 




27 


6.' 35 
6.35 
6.35 
6.44 
6.34 


6.60 


13.. 




28 


6.58 


14 




29 


6.30 


15 




6.40 


30 


6.45 






31 


6.45 









ISLAND OF KAUAI. 



75 



EEAHUA STREAM AT 750-FOOT ELEVATION NEAR LIHITE, KAUAI. 

Location. — About 12 miles north of Lihue, 4 miles from edge of forest reserve, and at 

confluence with stream from the east. 
Records available.— July 29, 1912, to December .31, 1912. 
Gage. — Vertical staff; read once a week. 
Channel.— Permanent. 
Discharge measurements. — Made by wading at about 20 feet below confluence of 

streams and about 35 feet below gage. 

Discharge measurements ofKedhua Stream at 750-foot elevation near Lihue, Kauai, in 1912. 



Date. 



Hydrographer. 



Gage 
height. 



Dis- 
charge. 



May 5 
July 29 
Oct. 22 



W. V. Hardy. 

do 

do 



Feet. 

5.20 
a 5. 19 

5.32 



Sec-feet. 
10.8 
12.3 
13.6 



a New datum established since previous measurement of May 5. 

Daily gage height, in feet, of Keahua Stream at 750-foot elevation near Lihue, Kauai, for 

1912. 











[S. Takabayashi, observer.] 










Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




5.29 






5.52 


16 












2 








17 








5.11 




3 








5.21 




18 

19 


5.12 








4 


5.11 














5 










20. 












6 






5.11 






21 












7 










22 




5.14 


5.32 




5.41 


8 




5.27 






5.50 


23 






9 








24 








5.13 




10 








5.20 




25 

26 


5.23 








11 


5.12 














12 






5.18 




27 






5.13 






13 






5.13 


28 










14... 










29... 




5.09 






5.12 


15 




5.11 






5.10 


30 


















31 



























KAWI STREAM AT 750-FOOT ELEVATION NEAR LIHUE, KAUAI. 

Location. — About 8 miles north of Lihue, 3 miles from boundary of forest reserve, 

and 600 feet above confluence of stream from the east. 
Records available. — July 30 to December 31, 1912. 
Drainage area. — 0.71 square miles. 

Gage. — Vertical staff gage; read once a week; datum unchanged. 
Channel. — Permanent. 
Discharge measurements. — Made by wading. 

Discharge measurements of Kawi Stream at 750-foot elevation near Lihue, Kauai, in 1912. 



Date. 



Hydrographer. 



Gage 
height. 



Dis- 
charge. 



Apr. 29 
July 30 
Oct. 22 
Nov. 12 



W.V.Hardy 

do 

do 

Larrison and Hardy. 



Feet. 
5.00 

a 1.92 
1.92 
1.80 



Sec-feet. 
2.01 
1.80 
2.10 
1.48 



a New datum established since previous measurement. 



76 



WATER RESOURCES OF HAW An, 1912. 



Daily gage height, in feet, of Kawi Stream at 750-foot elevation near Lihue, Kauai, for 1912. 

[S. Takabayashi, observer.] 



J Day. 


Aug. 


Sept. 


Oct. 


Nov. 


. Dec. 


Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




1.89 






2.03 


16 












2 








17 








1.82 




3 








1.79 




18 

19 


1.88 








4 


1.88 














5 










20 












6 






1.80 






21.. 












7 










22 




1.92 


1.92 




2.02 


8....... 




1.88 






1.99 


23 






9 ... 








24 








1.83 




10 








1.84 




25 

26 


1.98 








11 


1.89 














12 






1.80 




27.. 






1.90 






13 






1.90 


28 










14 










29 




1.82 






i.si 


15 




1.72 






1.81 


30 


















31 



























KANAHA DITCH AT INTAKE, NEAR LIHTTE. KAUAI. 

Location. — About 9 miles northwest of Lihue and about 500 feet above the point 
where the Kauai Electric Co.'s power line crosses the ditch and the North Fork 
of Wailua River. 

Records available. — August 6, 1910, to December 31, 1912. 

Gage. — Vertical staff; read once each day, at 8 a.m.; datum unchanged. 

Discharge measurements. — Made in flume 100 feet above gage. 

Discharge measurements of Kanaka ditch at intake, near Lihue, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 11 


W. V. Hardy 


Feet. 
3.02 
2.84 
2.78 
3.14 


Sec.-ft. 
33.4 


July 29 
31 


do 


29.0 


. . .do 


27.7 


Oct. 


do 


32.4 









Daily gage height, in feet, of Kanaha ditch at intake, near Lihue, Kauai, for 1912. 

[Mori, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


j 


2.50 
2.50 


2.30 
2.25 
2.25 
2.25 
2.25 

2.20 
2.20 
2.20 
2.60 
2.50 

2.50 
2.50 
2.50 
2.40 
2.40 


2.60 
2.60 
2.80 
2.70 
2.60 

2.60 
2.75 
2.70 
2.80 
2.80 

3.00 
3.00 
3.00 
2.90 
2.80 


2.60 
2.55 
2.50 
2.60 
2.80 

2.70 
2.90 
2.90 
2.90 
2.80 

2.70 
2.70 
2.60 
2.60 
2.60 


2.75 

2.70 
2.80 
3.10 
2.90 

2.80 
2.70 
2.90 
2.80 
2.7b 

2.65 
2.60 
2.60 
2.80 
2.80 


2.75 
2.70 
2.70 
2.70 
2.70 

2.80 
2.80 
2.80 
2.80 
2.75 

2.75 
2.75 
2.80 
2.80 
2.80 


2.80 
2.75 
2.80 
2.75 
2.75 

2.80 
3.00 
3.10 
2.80 
3.10 

3.10 
3.10 
3.10 
3.20 
3.00 


2.70 
2.90 
2.90 
2.90 
2.90 

3.50 
3.00 
3.10 
3.10 
3.10 

3.10 
3.10 
3.10 
3.20 
•3.00 


3.20 
3.20 
3.10 
3.10 
3.10 

3.20 
3.10 
3.10 
3.10 
3.10 

3.10 
2.90 

"2. 90* 
3.00 


3.00 
2.90 
3.00 
3.00 
3.15 

3.05 
3.05 
3.10 
3.05 
3.05 

3.10 
3.10 
3.05 
3.00 
3.00 


2.90 
3.00 
3.00 
3.00 
3.20 

3.20 
3.10 
3.10 
3.20 
3.15 

3.05 
2.95 
2.90 
2.90 
3.10 


3.05 


2 


3.2 


3 


3.1 


4 




1.6 


5 




1.6 


6 




1.6 


7 




1.5 


8 




1.6 


9 




1.60 


10 




2.40 


11 




2.40 


12 




2.40 


13 




2.40 


14 




2.30 


15 




2.30 



ISLAND OP KAUAI. 77 

Daily gage height, infeet,o/Kanaha ditch at intake, near Lihue, Kauai, for 1912 — Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 




2.40 
2.50 
2.50 
2.50 
2.50 

2.40 
2.60 
2.60 
2.60 
2.80 

2.80 
2.80 
2.60 
2.60 


2.70 
2.70 
2.65 
2.60 
2.60 

2.80 
2.75 
2.80 
2.40 
2.50 

2.50 
2.50 
2.40 
2.40 
2.60 
2 SO 


2.70 
3.00 
2.40 
2.30 
2.30 

2.00 
2.00 
2.00 
2.60 
2.80 

2.50 
2.70 
2.70 
2.80 
2.80 


2.80 
2.80 
2.80 
2.75 
2.75 

2.80 
2.80 
2.80 
2.85 
2.85 

2.85 
2.85 
3.00 
3.00 
2.90 
2.80 


2.80 
2.80 
2.70 
2.70 
2.70 

2.80 
2.90 
2.90 
2.80 
2.70 

2.70 
2.90 
2.80 
2.70 
2.70 


2.80 
3.10 
3.50 
3.00 
3.00 

3.00 
2.80 
2.80 
3.00 
2.90 

3.00 
3.00 
3.00 
3.50 
3.10 
2.80 


3.10 
3.50 
3.00 
3.00 
3.00 

3.00 
3.50 
3.50 
3.50 
3.20 

3.10 
3.10 
3.10 
3.10 
3.20 
3.20 


3.05 
2.90 
2.80 
2.80 
3.00 

3.00 
3.05 
3.00 
2.90 
2.75 

2.75 
2.75 
2.70 
3.00 
3.05 


2.90 
3.15 
3.10 
3.15 
3.15 

3.14 
3.15 
3.15 
3.10 
3.10 

3.20 
3.15 
3.15 
3.10 
3.00 
3.05 


2.85 
2.83 
3.05 
3.10 
3.15 

""3*20" 

1.60 
1.60 
1.65 
3.10 
2.90 


2.30 


17 




2.70 


18 




2.70 


19 




2.90 


20 




3.00 


21 




2.80 


22 


2.30 
2.40 
2.40 
2.40 

2.30 

2.30 

2.20 


2.90 


23 


2.85 


24 


2.90 


25 


2.80 


26 


2.70 




2.70 


28 


2.50 




2.40 


30 


2.40 




2.40 







KONOHIKI STREAM BASIN. 
KONOHIKI STREAM AT MAKAKTJALELE MAUKA WEIR, NEAR KAPAA, KAUAI. 

Location. — About 3 miles west of Kapaa. 
Records available. — April 1, 1911, to December 31, 1912. 
Gage. — Vertical staff; read once each day; datum unchanged. 
Discharge measurements. — Made with 3-foot sharp-crested weir. 
Cooperation. — Station maintained by the Makee Sugar Co. 

Daily discharge, in second-feet, of Konohiki Stream at Makakualele mauka weir, near 

Kapaa, Kauai, for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1. 
2. 
3. 
4. 
5. 

6, 
7 
8. 
9. 
10, 

11. 
12. 
13. 
14. 
15. 

16, 
17. 
18. 
19. 
20 

21. 
22, 
23 
24 
25 

26 
27 
28 
29 
30 
31 



1.17 
1.03 
1.03 
1.03 
1.03 

1.03 
1.03 
1.03 
1.17 
1.10 

1.10 
1.10 
1.10 
1.10 
1.10 

1.10 
1.10 
1.03 
1.03 
1.03 



.83 
.83 
.83 



89 



.83 
.83 



.83 
.83 

.83 
.83 
.83 
.83 
.83 

.76 
3.53 
2.82 
1.81 
1.56 

1.48 
1.25 
1.17 
1.17 
1.17 

1.10 
1.10 
1.10 
1.10 
1.10 



1.03 
1.03 
1.03 
1.03 
1.03 

1.03 
.96 
.96 
.96 



.96 
1.10 



.96 
1.03 



1.03 
1.03 



89 



0.83 



.83 
.83 



.83 

1.25 

.96 

.83 

2.72 

1.32 

1.17 

1.10 

.96 

.89 

.83 

.83 
.83 
.83 
.83 
.83 

.83 

.83 



0.83 
.83 
.83 
.83 
.83 

.83 
.83 
.83 

.83 



.83 
.83 
.83 
.83 



.83 
.83 
.83 
.83 
.83 



.76 
.76 
.76 



0.76 
.76 
.76 
.70 
.70 

.76 
.76 
.70 
.70 
.70 

.70 
.70 
.70 
.70 

.70 

.64 
.64 
.64 
.64 
.64 



.64 
.64 

.64 
.64 
.64 
.64 
.58 



0.58 
.58 
.58 
.58 

.58 

.58 
.58 
.58 
.58 
.58 

.58 
.58 
.58 
.58 
.58 

.58 
.58 
.58 
.64 
.83 

.76 
.70 
.64 
.58 
.58 

.58 
.58 
.58 
.58 
.58 
.58 



0.58 
.58 
.58 
.58 
.58 

.58 
.58 
.58 
.58 
.64 

.58 
.58 
.58 
.52 
.52 

.52 
.52 
.52 
.52 
.52 

.52 
.58 
.52 
.52 
.52 

.52 
.52 
.52 
.52 
.52 



0.52 
1.81 
2.07 
1.98 
1.40 

1.17 
.96 
.96 

1.17 



.83 
.83 
.76 
.76 

.76 
.76 
.70 
.70 
.70 

.76 
.76 
.76 
.70 
.70 



.70 
.70 



.64 
.64 



Note.— Discharge computed from Francis's formula: Q=3.33 LH T when L=3 feet. 



78 



WATER RESOURCES OF HAWAII, 1912. 



Monthly discharge of Konohiki Stream at Makakualele mauka weir, near Kapaa, Kauai, 

for 1912. 



Month. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



Discharge in second-feet. 



Maximum. Minimum. Mean 



1.17 

.96 

1.72 

3.53 

1.10 

1.25 

2.72 

.89 

.76 

.83 

.64 

2.07 



3.53 



.83 
.83 
.76 
.89 
.76 
.83 
.76 
.58 
.58 
.52 
.52 



,52 



1.02 
.85 
.97 

1.17 
.97 



Run-off 
(total in 
acre-feet). 



62.7 
48.9 
59.6 



51.2 
58.4 
51.0 
40.5 
36.9 
32.7 
56.6 



KONOHIKI STREAM AT MAKAKUALELE MAKAI WEIR, NEAR KAPAA, KAXTAI. 

Location. — About 2\ miles west of Kapaa. 
Records available. — January 1, 1912, to December 31, 1912. 
Gage. — Vertical staff; read once each day; datum unchanged. 
Discharge measurements. — Made with 3-foot sharp-crested weir. 
Cooperation. — Station maintained by the Makee Sugar Co. 



Daily discharge 



e, m secona- 



of Konohiki Stream at Makakualele makai weir, near 
Kapaa, Kauai, for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


7.15 


2.62 


4.64 


5.24 


2.53 


0.32 


0.58 


0.58 


0.58 


0.58 


0.58 


9.10 


3.75 


4.64 


5.24 


2.07 


.32 


.32 


.58 


.58 


.58 


.58 


7.83 


5.36 


3.02 


3.53 


1.64 


.32 


.32 


.58 


.58 


.58 


.58 


9.10 


3.75 


3.02 


3.75 


1.10 


.32 


.32 


.58 


.58 


.58 


.32 


8.53 


5.36 


4.89 


4.07 


.89 


.32 


.32 


.58 


.89 


.58 


.32 


6.75 


4.64 


4.64 


3.53 


.89 


.32 


.32 


.58 


.89 


.58 


.58 


6.75 


2.72 


4.64 


3.53 


.58 


.32 


.32 


.58 


.89 


.58 


.58 


6.88 


2.53 


5.24 


3.53 


.58 


.32 


.32 


.58 


.58 


.58 


.32 


3.53 


3.22 


5.24 


3.53 


.58 


.58 


.58 


.58 


.58 


.58 


.32 


3.32 


1.98 


5.24 


3.53 


.32 


.58 


.58 


.58 


.58 


.58 


.32 


7.42 


2.25 


6.49 


3.53 


.32 


.58 


.32 


.58 


.58 


.58 


.32 


8.25 


3.12 


5.24 


3.53 


.32 


.58 


.32 


.58 


.58 


.58 


.32 


9.99 


3.53 


1.81 


3.53 


.32 


.58 


.32 


.89 


.58 


.58 


.32 


9.99 


2.72 


2.07 


3.53 


.58 


.58 


.32 


.89 


.58 


.58 


.32 


7.83 


3.32 


1.64 


3.53 


.58 


.58 


.32 


.58 


.58 


.58 


.32 


7.69 


3.53 


2.07 


3.53 


.58 


.58 


.32 


.58 


.58 


.58 


.32 


6.62 


2.72 


5.24 


7.83 


.58 


.58 


.32 


.32 


.58 


.58 


.32 


4.64 


1.89 


5.24 


7.83 


.58 


.58 


.32 


.58 


.58 


.58 


.32 


4.07 


3.02 


4.64 


5.24 


.58 


.32 


.32 


.58 


.58 


.70 


.32 


3.64 


2.43 


5.24 


3.53 


.58 


.58 


.32 


.58 


.58 


1.03 


.32 


3. 75 


3.12 


6.10 


3.53 


.58 


.58 


.32 


.58 


.58 


1.03 


.23 


7.15 


3.53 


5.85 


3.53 


.58 


.58* 


.32 


.58 


.58 


1.03 


.19 


7.42 


2.53 


4.07 


3.53 


.32 


.58 


.32 


.89 


.58 


1.03 


.11 


3.02 


3.53 


4.07 


3.53 


.32 


.58 


.32 


.58 


.58 


.58 


.58 


3.64 


3.53 


4.64 


3.75 


.58 


.58 


.32 


.58, 


.58 


.70 


.58 


4.76 


3.53 


4.30 


3.53 


.32 


.70 


.32 


.58 


.58 


.58 


.32 


4.64 


3.64 


5.48 


4.07 


.32 


.58 


.32 


.58 


.58 


.58 


.32 


3.64 


2.92 


5.24 


3.53 


.58 


.58 


.32 


.58 


.58 


.58 


.32 


4.76 


3.02 


5.24 


3.53 


.58 


.58 


.58 


.58 


.58 


.58 


.58 


3. 53 




5.24 


3.53 


.58 


.58 


.58 


.58 


.58 


.32 


.58 


3.64 




5.24 




.58 




.58 


. .58 




.89 





Dec. 



1.25 
1.25 

7.83 
8.53 
3.02 



1.25 
1.25 
1.25 
1.25 

1.25 
1.25 
1.25 
1.25 



.58 
.58 
.58 
.32 

.32 
.32 

.32 
.58 
.58 

.58 
.32 
.32 
.32 
.32 
.32 



Note,— Discharge computed from Francis's formula: Q=3.33 LH 7 when L=3 feet, 



ISLAND OF KAUAI. 



79 



Monthly discharge of Konohihi Stream at Makakualele, maJcai weir, near Kapaa, Kauai, 

for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. 



Run-off 
(total in 
acre-feet). 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



5.36 
6.49 
7.83 
2.53 
.70 
.58 



1.03 

.58 

8.53 



3.02 

1.89 

1.64 

3.53 

.32 

.32 

.32 

.32 

.58 

.32 

.11 

.32 



6.10 
3.24 



375 

186 
278 
240 

42. 

31. 



22.8 
36.9 
36.3 
40.0 
22.6 
82.4 



9.99 



11 



1.92 



1,390 



Note. — Maximum and minimum discharge are mean for the day. 

KAEHULUA STREAM BASIN. 
NORTH FORE OF KAEHTJLTJA STREAM AT KAINAHOLA WEIR, NEAR KAPAA, KAUAI. 

Location. — About 2 miles northwest of Kapaa. 

Records available. — April 1, 1911, to December 31, 1912. 

Gage. — Vertical staff; read once each day; datum unchanged. 

Discharge measurements. — Made with a 3-foot sharp-crested weir. 

Cooperation. — Station maintained by the Makee Sugar Co. 

Daily discharge, in second-feet, of North Fork of Kaehulua Stream at Kainahola weir, near 

Kapaa, Kauai, for 1912. 



Day. 



1.. 

2.. 
3.. 
4.. 
5- 

6.. 

7.. 
8. 
9. 
10. 

11. 
12. 
13. 
14. 
15. 

16. 
17. 
18. 
19. 
20. 

21. 

22. 
23. 
24. 
25. 

26. 
27. 
28. 
29. 
30. 
31. 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec 



.83 
.83 
.83 
.83 

.83 

.83 
.83 
.83 
.83 

v 76 
f76 
.76 
.76 
.76 

.76 
.76 
.76 
.76 
.70 

.70 
.70 
.70 
.70 
.70 

.70 
.70 
.70 
.70 
.70 
.70 



0.70 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.64 



0.64 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.70 
.83 

.96 



.83 



0.76 
.76 



.64 
.64 



.64 
.64 
.64 
.64 



.64 
.64 
.64 
.64 

.64 

3.02 

1.72 

.83 

.76 

.76 
.76 
.70 
.70 
.70 

.70 
.64 
.64 
.64 



.64 
.64 



.64 
.64 
.64 



0.70 
.64 
.64 
.70 
.70 

.64 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.64 
.64 

.58 
.58 
.64 
.64 
.64 



0.64 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.64 



2.62 
.83 
.76 

1.72 
.83 

.70 
.70 
.70 
.64 
.64 

.64 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.64 
.64 
.64 



0.64 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.64 
.64 

.64 

.64 

1.17 

1.17 

.64 

.64 
.64 
.64 
.64 
.64 



0.58 
.58 
.58 
.58 
.58 

.58 
.58 
.58 
.58 
.58 

.58 
-.58 
.58 
.58 
.58 

.52 
.52 
.52 
.52 
.52 

.52 
.52 
.52 
.52 
.52 

.52 
.52 
.52 
.52 
.52 



0.52 
.52 
.52 
.52 
.52 

.52 
.52 
.52 
.52 
.52 

.52 
.52 
.52 
.52 
.52 

.52 
.52 
.52 
.52 
.58 

.58 
.58 
.58 
.58 
.58 

.58 
.58 
.58 
.58 
.58 
.58 



0.58 
.58 
.58 
.58 

.58 

.58 
.58 
.58 
.58 
.58 

.58 
.58 
.58 
.58 
.58 

.58 
.58 
.52 
.52 
.52 

.52 
.52 
.52 
.52 

.47 

.47 
.52 
.47 
.47 
.47 



0.47 

1.10 

2.34 

.96 

.83 

.70 
.70 
.70 
.64 
.70 

.70 
.64 
.64 
.64 
.64 

.64 
.64 
.64 
.64 
.64 

.70 
.83 
.70 
.64 
.64 



.64 



.64 
.64 



Note.— Discharge computed from Francis's formula: Q=3.33 LH T when L=3 feet. 



80 



WATER RESOURCES OF HAWAII, 1912. 



Monthly discharge of North Fork of Kaehulua Stream at Kainahola weir, near Kapaa, 

Kauai, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November- % .. 
December 

The year 



0.83 
.70 
.96 

3.02 
.76 
.70 

2.62 

1.17 
.58 
.58 
.58 

2.34 



3.02 



0.70 
.64 
.64 
.64 
.64 
.68 
.64 
.58 
.52 
.52 
.47 
.47 



.47 



0.76 
.64 
.75 
.79 
.65 
.64 
.76 
.67 
.55 
.54 
.55 
.74 



.67 



46.7 
36.8 
46.1 
47.0 
40.0 
38.1 
46.7 
41.2 
32.7 
33.2 
32.7 
45.5 



487 



KAEHULUA STREAM AT KUHINOA WEIR, NEAR KAPAA, KAUAI. 

Location. — About 1^ miles northwest of Kapaa. 
Records available. — May 1, 1911, to December 31, 1912. 
Gage. — Vertical staff; read once each day; datum unchanged. 
Discharge measurements. — Made with 6.5-foot sharp-crested weir. 
Cooperation. — Station is maintained by Makee Sugar Co. 

Daily discharge, in second-feet, of Kaehulua Stream at Kuhinoa Weir, near Kapaa, Kauai, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.52 
2.08 
1.65 
2.23 
1.26 

1.26 
1.39 
1.65 
1.26 
1.39 

2.23 
1.65 
1.39 
1.13 
1.79 

1.39 
1.52 
1.26 
1.13 
1.79 

1.52 
1.65 
2.39 
3.21 
2.55 

1.52 
1.65 
1.52 
2.23 
1.93 
1.93 


1.26 
1.13 
1.39 
1.79 
1.26 

2.39 
2.87 
1.01 
1.52 
1.39 

1.52 
2.23 
3.04 
1.39 
m 1.39 

2.23 
1.39 
1.65 
1.26 
1.01 

1.13 
1.39 
2.23 
1.52 
1.79 

1.39 

1.52 
1.39 
1.39 


1.65 
1.39 
1.26 
1.26 
1.26 

1.52 

6.98 
2.55 
2.71 
14.10 

17.00 
11. 30 
22.30 
20.70 
9.32 

7.65 
2.71 
2.71 
2.71 
2.71 

2.71 
3.56 
1.93 
1.93 
1.93 

1.93 
1.93 
1.93 
1.93 
1.26 
10.60 


10.60 
4.48 
2.71 
2.71 
2.71 

1.93 

1.93 
1.93 
6.53 
2.71 

2.71 
2.71 
2.71 
2.71 

2.71 

2.71 

35.90 

25.70 

5.90 

2.71 

2.71 
2.71 
2.71 
2.71 
2.71 

.68 
.68 
.68 
.68 

.68 


0.68 
.68 
.68 
.90 

.68 

.68 

.90 

1.26 

1.26 

1.26 

.68 
1.26 
1.26 
1.93 
1.93 

2.23 
1.93 
1.93 
1.93 
1.93 

1.93 

1.26 
1.93 
1.26 
1.26 

1.93 
1.93 
.90 
11.30 
1.93 
1.93 


0.68 
1.26 
1.26 
1.26 
.68 

1.26 
1.26 
1.26 
1.26 
1.26 

1.26 
1.26 
1.26 
1.93 
1.26 

.68 

.68 

1.26 

1.26 

1.26 

1.26 
1.93 
2.71 
2.71 
2.71 

3.04 
2.71 
2.71 
2.71 
1.93 


3.56 
1.93 
2.71 
2.71 
2.71 

3.56 
2.71 
2.71 
3.56 
3.56 

2.71 
1.93 
2.71 
2.71 
1.93 

2.23 
1.93 
1.93 
1.26 
1.93 

1.26 
1.26 
2.23 
2.71 
1.26 

1.26 
2.23 
2.23 
1.93 
1.93 
1.26 


0.68 
1.26 
.68 
1.93 
1.93 

1.93 

1.26 
1.93 
1.26 
1.93 

1.93 
1.26 
2.71 
2.71 
1.93 

1.26 
1.26 
1.93 
1.93 
1.93 

1.93 
1.26 
2.71 
1.93 
1.93 

1.93 
1.93 
1.93 
2.23 
1.93 
1.93 


2.71 
1.93 
1.93 
2.23 
1.93 

2.23 
1.26 
1.93 
1.93 
1.93 

1.93 
2.71 
1.93 
1.93 
1.93 

1.93 
1.93 
1.93 
1.93 
1.26 

1.26 
1.26 
1.26 
1.26 
1.26 

1.26 
1.26 
2.71 
1.26 
1.26 


0.24 
.24 
.17 
.17 
.24 

.24 
.24 
.24 
.24 
.24 

.49 
.32 
.68 
.68 

.68 

.68 

.68 

1.26 

1.26 

1.52 

1.52 
1.52 
1.52 
.68 
1.26 

1.26 
1.26 
1.26 
1.26 
.58 
.68 


0.24 
.24 
.24 
.24 

.24 

.24 
.24 
.17 
1.26 
.24 

.24 
.24 
.68 
.68 
.90 

.68 
.24 
.24 

.17 
.68 

.68 
.68 
.68 
.24 
.24 

.06 
.06 
.17 
.06 
.06 


0.68 


2 


.68 


3 


8.83 


4 


18.50 


5 


.17 


6 


.06 


7 


.68 


8 


.06 


9 


.06 


10 


.40 


11 


.40 


12 


.24 


13 


.68 


14 


.24 


15 


.17 


16 


.17 


17 


.32 


18 


.24 


19 


.24 


20 


.17 


21 


.68 


22 


.68 


23 


.68 


24 


.68- 


25 


.06 


26 


.06 


27 


.06 


28 


.17 


29 


.24 


30 


.24 


31 


.17 







Note.— Discharge computed from Francis's formula: Q=3.33 LH* when L=6.5 feet. 



ISLAND OF KAUAI. 81 

Monthly discharge ofKaehulua Stream at Kukinoa weir, near Kapaa, Kauai, for 1912 . 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



January 

February . 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



3.21 
3.04 
22.30 
35.90 
11.30 
3.04 
3.56 
2.71 
2.71 
1.52 
1.26 
18.50 



1.13 

1.01 
1.26 



1.26 
.68 

1.26 
.17 
.06 
.06 



1.71 
1.62 
5.34 
4.72 
1.73 
1.60 
2.27 
1.78 
1.78 
.75 
.37 
1.18 



105.0 

93.2 

328.0 

281.0 

106.0 

95.2 

140.0 

109.0 

106.0 

46.1 

22.0 

72.6 



35.90 



.06 



2.07 



1,500 



Note. — Maximum and minimum discharge are mean for the day. 
SOUTH FORK OF KAEHT7LUA STREAM AT WAINAMUAMU WEIR, NEAR KAPAA, KATTAL 

Location. — About 2\ miles northwest of Kapaa. 
Records available. — April 1, 1911, to December 31, 1912. 
Gage. — Vertical staff; read once each day; datum unchanged. 
Discharge measurements. — Made with a 3-foot sharp-crested weir. 
Cooperation. — Station maintained by the Makee Sugar Co. 

Daily discharge, in second-feet, of South Fork of Kaehulua Stream at Wainamuamu weir, 
near Kapaa, Kauai, for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


0.58 


0.42 


0.42 


0.52 


0.70 


0.52 


0.47 


0.42 


0.42 


0.42 


0.42 


.52 


.42 


.36 


.52 


.70 


.52 


.47 


.42 


.42 


.42 


.42 


.58 


.42 


.42 


.52 


.70 


.52 


.47 


.42 


.42 


.42 


.42 


.52 


.42 


.36 


.52 


.64 


.52 


.47 


.42 


.42 


.42 


.42 


.52 


.42 


.36 


.47 


.64 


.52 


.47 


.47 


.42 


.42 


.42 


.52 


.42 


.42 


.47 


.64 


.47 


.47 


.47 


.42 


.42 


.42 


.52 


.42 


.36 


.64 


.58 


.47 


.47 


.47 


.42 


.42 


.42 


.52 


.36 


.36 


.58 


.58 


.47 


.47 


.42 


.42 


.42 


.42 


.52 


.36 


.58 


.58 


.58 


.47 


.47 


.42 


.42 


.42 


.42 


.58 


.36 


.58 


.58 


.52 


.47 


.47 


.42 


.42 


.42 


.42 


.52 


.36 


.58 


.58 


.47 


.47 


1.25 


.42 


.42 


.42 


.42 


.52 


.36 


.47 


.58 


.52 


.47 


.70 


.42 


.42 


.42 


.42 


.52 


.36 


.36 


.58 


.52 


.47 


.47 


.42 


.42 


.42 


.42 


.52 


.36 


.36 


.58 


.52 


.47 


.58 


.52 


.42 


.42 


.42 


.52 


.36 


.36 


.58 


.52 


.47 


.70 


.52 


.42 


.42 


.42 


.52 


.36 


.36 


.58 


.47 


.47 


.52 


.42 


.42 


.42 


.42 


.52 


.36 


.36 


3.53 


.47 


.47 


.52 


.42 


.42 


.42 


.42 


.52 


.36 


.36 


3.53 


.47 


.47 


.52 


.42 


' .42 


.42 


.42 


.47 


.36 


.36 


3.22 


.47 


.47 


.52 


.42 


.42 


.42 


.42 


.47 


.36 


.36 


2.92 


.47 


.47 


.47 


.42 


.42 


.64 


.42 


.47 


.36 


.36 


2.72 


.47 


.47 


.47 


.42 


.42 


.64 


.42 


.47 


.36 


.36 


5.00 


.47 


.47 


.47 


.42 


.42 


.64 


.42 


.47 


.42 


.36 


5.00 


.47 


.47 


.47 


.42 


.42 


.47 


.42 


.47 


.42 


.36 


5.00 


.52 


.47 


.47 


.42 


.42 


.42 


.42 


.47 


.36 


.36 


5.00 


.47 


.47 


.47 


.42 


.42 


.42 


.42 


.47 


.36 


.36 


5.00 


.47 


.47 


.47 


.42 


.42 


.42 


.42 


.47 


.36 


.42 


5.00 


.47 


.47 


.42 


.42 


.42 


.42 


.42 


.47 


.36 


.42 


4.64 


.52 


.64 


.42 


.42 


.42 


.42 


.42 


.47 


.36 


.83 


3.02 


.70 


.52 


.42 


.42 


.42 


.42 


.36 


.42 




.76 


.76 


.64 


.47 


.42 


.42 


.42 


.42 


.36 


.42 




.76 




.47 




.42 


.42 




.42 





Dec. 



1. 

2. 
3. 
4. 
5. 

6. 

7. 
8. 
9. 
10. 

11. 
12. 
13. 
14, 
15. 

16 
17 

18 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



0.36 
.47 
.52 

1.40 
.64 

1.10 
1.10 
1.10 

.58 
.58 



.52 

.47 
.47 

.47 
.47 
.47 
.47 
.47 

.52 
.52 
.52 
.52 
.47 

.47 
.47 
.47 
.47 
.47 
.47 



Note.— Discharge computed from Francis's formula: Q==3. 
14694°— wsp 336—14 6 



LH* when L=3 feet. 



82 



WATER RESOURCES OF HAWAII, 1912. 



Monthly discharge of South Fork of Kaehulua Stream at Wainamuamu weir, near Kapaa, 

Kauai, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



0.58 
.42 
.83 

5.00 
.70 
.64 

1.25 
.52 
.42 
.64 
.42 

1.40 



5.00 



0.42 
.36 
.36 
.47 
.47 
.47 
.42 
.42 
.42 
.42 
.36 
.36 



.36 



0.50 
.38 
.44 

2.11 
.54 
.49 
.51 
.43 
.42 
.44 
.42 
.58 



SO. 7 
21.9 
27.1 
126.0 
33.2 
29.2 
31.4 
26.4 
25.0 
27.1 
25.0 
35.7 



439 



EAPAA RIVER BASIN. 
EAPAA RIVER AT KAPAHI, NEAR EAPAA, KAUAI. 

Location. — About one-half mile above the intake of the Kapaa ditch, 5 miles north- 
west of Kapaa, and 4 miles west of Kealia. , 

Records available.— July 23, 1910, to December 31, 1912. 

Gage. — Vertical staff gage spiked to left bank of stream; read twice daily, about 7 
a. m. and 2 p.m.; datum unchanged. 

Channel. — Fairly permanent. 

Discharge measurements. — Made from a wire suspension bridge. 

Accuracy. — Records good. 

Cooperation. — Station maintained in cooperation with the Makee Sugar Co. 

The following discharge measurement was made by W. V. Hardy: 
February 16, 1912: Gage height, 1.42 feet; discharge, 11.8 second-feet. 

Daily gage height, in feet, of Kapaa River at Kapahi, near Kapaa, Kauai, for 1912. 

[S. Okimoto, observer.] 



Day. 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 



1 

2 
3 

4 
5 

6 
7 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 
18 
19 
20 



1.61 
1.62 
1.63 
1.58 
1.76 

1.60 
1.61 
1.82 
1.88 
1.78 

1.59 
1.55 
1.79 
2.09 
1.66 

1.60 
1.55 
1.53 
1.50 
1.50 



1.46 
1.46 
1.46 
1.45 
1.44 

1.44 
1.44 
1.44 
1.48 
1.45 

1.45 
1.44 
1.44 
1.44 
1.44 

1.44 
1.44 
1.44 
1.43 
1.43 



1.58 
1.70 
1.56 
2.58 
2.80 

2.62 
2.11 
2.92 
2.00 
1 85 

1.68 
1.55 
1.68 
1.66 
1.79 



1.63 
1.52 
1.56 
1.74 
1.80 

1.86 
2.45 
1.86 
2.14 
1.74 

1.70 
1.68 
1.70 
1.85 
1.64 

1.65 
6.22 
2.38 
1.76 
1.86 



1.48 
1.46 
1.48 
1.62 
1.52 

1.51 
1.48 
1.58 
1.48 
1.46 

1.45 
1.46 
1.50 
1.95 
1.85 

1.54 
1.56 
1.48 
1.45 
1.45 



1.50 
1.48 
1.47 
1.84 
1.56 

1.48 
1.46 
1.62 
1.58 
1.50 

1.46 
1.45 
1.70 
1.50 
1.50 

1.54 
1.48 
1.50 
1.59 
1.49 



1.44 
1.44 
1.43 
1.43 
1.48 

1.53 
1.81 
1.53 

1.54 
2.82 

2.65 
1.79 
1.86 
3.92 
2.21 

1.85 
2.24 
1.74 
1.54 
-1.56 



1.46 
1.45 
1.44 



48 



1.72 
1.65 
1.60 
1.74 
1.54 

1.57 
1.49 
1.56 
2.56 
1.78 

1.60 
1.66 
1.53 
1.50 
1.48 



1.58 
1.63 
1.54 
1.54 
1.50 

2.05 
1.57 
1.52 
1.49 
1.48 

1.46 
1.45 
1.45 
1.42 
1.40 

1.48 
1.58 
1.44 
1.51 
1.48 



1.72 
1.47 
1.82 
1.48 
1.50 



1.50 

1.56 
1.52 
1.59 
1.86 
2.06 



76 



1.50 
1.48 
1.77 
1.73 
1.52 

1.52 
1.47 
1.44 
1.44 
1.64 

1.50 
1.44 
1.57 
1.52 
1.56 



1.86 
2.52 
3.30 
3.75 
1.75 



82 



1.58 
1.52 
1.50 
1.50 
1.48 

1.62 
1.49 
1.48 
1.56 
1.62, 



ISLAND OF KAUAI. 



83 



Daily gage height, in feet, of Kapaa River at Kapahi, near Kapaa, Kauai, for 1912 — 

Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


21 


1.49 

1.48 
1.48 
1.48 
1.48 

1.47 
1.47 
1.49 
1.48 
1.47 
1.46 


1.44 
1.74 
2.00 
1.66 
1.58 

1.58 
1.58 
1.51 
1.49 


1.66 

1.68 
1.64 
1.66 
2.80 

1.84 
1.64 
1.70 
1.66 
1.60 
1.72 


1.74 
1.68 
1.61 
1.56 
1.58 

1.66 
1.56 
1.55 
1.51 
1.48 


1.46 
1.58 
1.70 
1.82 
1.56 

1.50 
1.98 
2.90 
2.24 
1.63 
1.52 


1.55 
1.48 
1.45 
1.45 
1.45 

1.44 
1.57 
1.52 
1.48 
1.44 


1.57 
1.56 
1.59 
2.16 
1.56 

1.74 
1.54 
1.53 
1.54 
1.52 
1.48 


1.51 
1.60 
1.52 
1.47 
1.48 

1.59 
1.94 
1.57 
1.52 

1.88 
1.66 


1.50 

1.48 
1.45 
1.43 
1.42 

1.41 
1.41 
1.44 
1.54 
1.57 


1.91 
1.60 
1.62 
1.55 
1.57 

2.18 
1.66 
1.56 
1.54 
1.66 
1.50 


1.79 
2.20 
1.80 
1.53 
1.45 

1.48 
1.45 
1.44 
1.90 
1.70 


2.32 


22 


1.78 


23 


1.68 


24 


2.38 


25 


1.82 


26 


1.82 


27 


1.58 


28 


1.54 


29 


1.50 


30 


1.48 


31 


1.49 







Daily discharge, in second-feet, of Kapaa River at Kapahi, 


near Kapaa, 


Kauai, for 1912. 


Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


j 


18.4 
18.8 
19.2 
17.2 
25.0 

18.0 

18.4 
28.0 
31.0 
26.0 

17.6 
16.0 
26.5 
44.3 
20.4 

18.0 
16.0 
15.2 
14.0 
14.0 

13.7 
13.4 
13.4 
13.4 
13.4 

13.1 
13.1 
13.7 
13.4 
13.1 
12.8 


12.8 
12.8 
12.8 
12.5 
12.2 

12.2 
12.2 
12.2 
13.4 
12.5 

12.5 
12.2 
12.2 
12.2 
12.2 

12.2 
12.2 
12.2 
11.9 
11.9 

12.2 
24.0 
38.0 
20.4 
17.2 

17.2 
17.2 
14.4 
13.7 


42.2 
17.2 
46.4 
20.4 
17.2 

17.2 
22.0 
16.4 
86.0 
109.0 

90.0 
45.7 
123.0 
38.0 
29.5 

21.2 

16.0 
21.2 
20.4 
26.5 

20.4 
21.2 
1».6 
26.4 
109.0 

29.0 
19.6 
22.0 
20.4 
18.0 
23.0 


19.2 
14.8 
16.4 
24.0 
27.0 

30.0 
73.5 
30.0 
47.8 
24.0 

22.0 
21.2 
22.0 
29.5 
19.6 

20.0 
619.0 
67.2 
25.0 
30.0 

24.0 
21.2 
18.4 
16.4 
17.2 

20.4 
16.4 
16.0 
14.4 
13.4 


13.4 

12.8 
13.4 
18.8 
14.8 

14.4 

13.4 
17.2 
13.4 
12.8 

12.5 

12.8 
14.0 
35.0 
29.5 

15.6 
16.4 
13.4 
12.5 
12.5 

12.8 
17.2 
22.0 
28.0 
16.4 

14.0 

36.8 
121.0 
55.2 
19.2 
14.8 


14.0 
13.4 
13.1 
29.0 
16.4 

13.4 

12.8 
18.8 
17.2 
14.0 

12.8 
12.5 
22.0 
14.0 
14.0 

15.6 
13.4 
14.0 
17.6 
13.7 

16.0 
13.4 
12.5 
12.5 
12.5 

12.2 

16.8 
14.8 
13.4 
12.2 


12.2 
12.2 
11.9 
11.9 
13.4 

15.2 
27.5 
15.2 
15.6 
111.0 

93.0 
26.5 
30.0 
261.0 
52.8 

29.5 
55.2 
24.0 
15.6 
16.4 

16.8 
16.4 
17.6 
49.2 
16.4 

24.0 
15.6 
15.2 
15.6 
14.8 
13.4 


12.8 
12.5 
12.2 
13.4 
31.5 

23.0 
20.0 
18.0 
24.0 
15.6 

16.8 
13.7 
16.4 
84.0 
26.0 

18.0 
20.4 
15.2 
14.0 
13.4 

14.4 
18.0 
14.8 
13.1 
13.4 

17.6 
34.4 
16.8 
14.8 
31.0 
20.4 


17.2 
19.2 
15.6 
15.6 
14.0 

41.5 
16.8 
14.8 
13.7 
13.4 

12.8 
12.5 
12.5 
11.6 
11.0 

13.4 
17.2 
12.2 
14.4 
13.4 

14.0 
13.4 
12.5 
11.9 
11.6 

11.3 
11.3 
12.2 
15.6 
16.8 


23.0 
13.1 
28.0 
13.4 
14.0 

14.0 
16.8 
26.0 
17.2 
16.4 

24.5 
16.4 
16.8 
17.2 
14.0 

16.4 
14.8 
17.6 
30.0 
42.2 

32.6 
18.0 
18.8 
16.0 
16.8 

50.6 
20.4 
16.4 
15.6 
20.4 
14.0 


13.7 
13.1 
12.8 
12.8 
25.0 

14.0 

13.4 
25.5 
23.5 
14.8 

14.8 
13.1 
12.2 
12.2 
19.6 

14.0 
12.2 
16.8 
14.8 
16.4 

26.5 
52.0 
27.0 
15.2 
12.5 

13.4 
12.5 
12.2 
32.0 
22.0 


30.0 


2 


80.0 




171.0 


4 


236.0 


5 


24.5 


6 


21.6 


7 


20.4 


8 


28.0 


9 


35.0 


10 


21.6 


11 


17.2 


12...., 


14.8 


13 


14.0 


14 


14.0 


15 


13.4 


16 


14.8 


17 


13.7 


18 


13.4 


19 


16.4 


20..... 


18.8 


21. 


61.8 


22 


26.0 


23 


21.2 


24 


67.2 


25 


28.0 


26 


28.0 


27 


17.2 


28 


15.6 


29 


14.0 


30.. 


13.4 


31 


13.7 







Monthly discharge of Kapaa River at Kapahi, near Kapaa, Kauai, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October. ; 

November 

December 

The year 



44. 



123, 

619, 

121 
29. 

261, 
84. 
41.5 
50.6 
52.0 

236.0 



619.0 



12.8 
11.9 
16.0 
13.4 
12.5 
12.2 
11.9 
12.2 
11.0 
13.1 
12.2 
13.4 



11.0 



18.3 
14.5 
37.0 
45.3 
21.8 
14.9 
34.4 
20.3 
14.8 
20.4 
18.0 
36.3 



24.7 



1,130 

834 

2,280 

2,700 

1,340 

887 

2,120 

1,250 

881 

1,250 

1,070 

2,230 



18,000 



84 



WATER RESOURCES OF HAWAII, 1912. 



AKTTLIKULI SPRING AT WEIR NEAR KAPAA, ELMJAI. 

Location. — About 5 miles west of Kealia. 

Records available. — April 1, 1911, to December 31, 1912. 

Gage. — Vertical staff; read once each day; datum unchanged. 

Discharge measurements. — Made with a 3-foot sharp-crested weir. 

Cooperation. — Station maintained by the Makee Sugar Co. 

Daily discharge, in second-feet, of Akulikuli Spring at weir near Kapaa, Kauai, for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


2.07 


1.81 


1.89 


1.98 


1.98 


1.17 


1.89 


1.32 


1.17 


0.96 


1.03 


2.07 


1.72 


1.89 


1.98 


1.98 


1.10 


1.89 


1.32 


1.10 


.96 


1.03 


1.98 


1.72 


1.98 


1.98 


1.98 


1.10 


1.89 


1.32 


1.10 


.96 


1.03 


1.89 


1.72 


1.98 


1.98 


2.16 


1.10 


1.89 


1.32 


1.03 


.96 


1.03 


1.89 


1.98 


1.98 


1.98 


2.16 


1.10 


1.89 


1.32 


1.10 


.96 


1.03 


1.89 


1.98 


1.98 


1.98 


1.98 


1.03 


1.89 


1.25 


1.10 


.96 


1.03 


1.89 


1.89 


1.81 


2.16 


1.98 


1.03 


1.89 


1.25 


1.10 


.96 


1.03 


1.89 


1.89 


1.81 


2.07 


1.98 


1.03 


1.89 


1.25 


1.03 


.96 


1.03 


1.81 


1.89 


2.07 


2.53 


1.98 


1.03 


1.89 


1.17 


1.03 


.96 


1.03 


1.81 


1.89 


3.12 


2.43 


1.98 


1.03 


1.89 


1.17 


1.03 


.96 


1.03 


1.81 


1.89 


3.22 


2.16 


1.98 


1.03 


2.43 


1.17 


1.03 


1.03 


1.03 


1.81 


1.89 


2.62 


2.16 


1.98 


1.03 


2.43 


1.17 


1.03 


1.03 


1.03 


1.81 


1.89 


3.02 


2.16 


1.98 


1.03 


2.25 


1.17 


1.03 


1.03 


1.03 


1.81 


1.89 


2.53 


2.16 


1.81 


1.03 


3.32 


1.17 


1.03 


1.03 


1.03 


1.89 


1.89 


2.34 


2.16 


1.03 


1.03 


2.53 


1.32 


1.03 


1.03 


1.03 


1.89 


1.89 


2.16 


2.16 


1.03 


1.03 


2.16 


1.17 


1.03 


1.03 


1.03 


1.89 


1.89 


2.16 


4.07 


1.03 


1.03 


2.16 


1.17 


1.03 


1.03 


1.03 


1.89 


1.89 


1.98 


2.53 


1.03 


1.03 


2.16 


1.17 


1.03 


1.03 


1.03 


1.89 


1.89 


1.98 


2.07 


1.03 


1.03 


2.07 


1.17 


1.03 


1.03 


1.03 


1.89 


1.89 


1.98 


2.62 


1.03 


1.03 


2.07 


1.17 


1.03 


1.17 


1.03 


1.89 


1.89 


1.98 


2.53 


1.03 


1.25 


2.07 


1.17 


1.03 


1.10 


1.10 


1.89 


1.89 


1.98 


2.34 


1.03 


1.25 


2.07 


1.17 


1.03 


1.03 


1.10 


1.89 


1.89 


1.98 


2.25 


1.03 


1.25 


2.07 


1.17 


1.03 


1.03 


1.10 


1.89 


1.89 


1.98 


2.25 


1.03 


1.25 


2.16 


1.17 


1.03 


1.03 


1.10 


1.81 


1.89 


2.34 


2.16 


1.03 


1.25 


2.16 


1.17 


1.03 


1.03 


1.03 


1.81 


1.89 


2.62 


2.16 


1.03 


1.17 


1.32 


1.17 


1.03 


1.03 


1.03 


1.81 


1.89 


2.43 


1.98 


1.10 


1.25 


1.32 


1.25 


1.03 


1.03 


1.03 


1.81 


1.89 


2.16 


1.98 


1.48 


1.17 


1.32 


1.17 


1.03 


1.03 


1.03 


1.81 


1.89 


2.07 


1.98 


2.07 


1.98 


1.32 


1.17 


1.03 


1.03 


1.03 


1.81 




2.07 


1.98 


1.17 


1.89 


1.32 


1.17 


.96 


1.03 


1.03 


1.81 





1.98 





1.10 





1.32 


1.17 




1.03 





Dec. 



1.. 
2.. 
3.. 
4.. 
5.. 

6.. 
7.. 
8.. 
9.. 
10.. 

11.. 
12.. 
13.. 
14.. 
15.. 

16.. 
17.. 
18.. 
19.. 
20.. 

21.. 
22.. 
23.. 
24.. 
25.. 

26.. 
27.. 
28.. 
29.. 
30.. 
31.. 



1.03 
1.25 
2.92 
2.53 
2.43 



1.40 

1.25 

1.56 
1.03 
1.03 
1.03 

1.03 
1.03 
1.03 
1.03 
1.03 

1.64 
1.25 
1.10 
1.03 
1.03 

1.03 
1.03 
1.03 
1.03 
1.03 
1.03 



Note.— Discharge computed from Francis's formula: Q,=3.33 LBP when L=3.0 feet. 

Monthly discharge of Akulikuli Spring at weir near Kapaa, Kauai, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean. 



Run-off 
(total in 
acre-feet). 



January., 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



2.07 
1.98 
3.22 
4.07 
2.16 
1.98 
3.32 
1.32 
1.17 
1.17 
1.10 
2.92 



4.07 



1.81 
1.72 
1.81 
1.98 
1.03 
1.03 
1.32 
1.17 



1.03 
1.03 



1.87 
1.88 
2.20 
2.23 
1.53 
1.16 
1.97 
1.21 
1.04 
1.01 
1.04 
1.29 



1.53 



115.0 
108.0 
135.0 
133.0 
94.1 
69.0 
121.0 
74.4 
61.9 
62.1 
61.9 
79.3 



1,110 



ISLAND OF KAUAI. 



85 



KAPAHI DITCH AT KAPAHI, NEAR KAPAA, KAUAI. 

Location. — About 4 miles west of Kealia and 600 feet below the diversion dam in 

Kapaa River. 
Records available. — April 15, 1909, to December 31, 1912. 
Gage. — Watson clock register; datum unchanged. 
Discharge measurements. — There is a 20-foot sharp-crested weir immediately 

below the gage, but meter measurements give a different rating from the weir 

formula. 
Accuracy. — Records good. 
Cooperation. — Station maintained in cooperation with the Makee Sugar Co. 

The following discharge measurement was made by W. V. Hardy: 
February 16, 1912: Gage height, 0.31 foot; discharge, 10.6 second-feet. 

Daily gage height, in feet, of Kapahi ditch at Kapahi, near Kapaa, Kauai, for 1912. 

[K. Okimoto, observer.] 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1 


0.26 


2 


.35 


3 


.39 


4 


.39 


5 


.39 


6 


.39 


7 


.39 


8 


.39 


9 


.39 


10 


.39 


11 


.40 


12 


.39 


13 


.44 


14 


.47 


15 


.45 


16 


.42 


17 


.39 


18 


.37 


19 


.37 


20 




21. 




22 




23 




24 




25 




26 




27 




28 


.35 


29 


.35 


30 


.34 


31 


.33 



0.33 



0.59 
.42 
.85 
.48 
.39 



0.42 
.41 
.38 
.40 
.43 

.43 
.44 
.43 
.44 
.43 

.43 

.42 
.42 
.43 
.42 

.41 
.52 
.35 
.27 

.27 

.26 
.26 
.26 
.30 
.41 

.41 
.40 
.39 
.37 
.34 



0.33 
.33 
.34 
.43 
.40 

.37 
.35 
.41 
.35 
.33 

.33 
.36 
.39 
.54 
.67 

.40 
.39 
.35 
.33 
.33 



.45 
.42 
.55 
.38 

.35 

.65 
.85 
.46 
.44 
.36 



0.35 
.35 
.36 
.52 
.42 

.35 
.34 
.37 
.41 
.36 

.33 
.33 
.47 
.36 
.37 



32 



0.32 
.32 
.32 
.32 



0.33 
.32 
.31 
.34 
.61 

.52 
.43 
.41 
.46 
.42 

.40 
.36 
.34 
.36 
.43 

.36 
.35 
.36 
.36 
.38 

.97 
.60 
.43 
.45 
.34 



,57 



0.42 
.46 



.38 
.35 



.36 
.35 
.33 

.32 
.32 
.32 
.31 
.11 

.18 
.41 
.33 
.36 
.34 

.35 
.33 
.32 
.31 
.30 

.30 
.29 
.32 
.37 
.41 



0.43 
.34 
.53 
.37 

.38 

.37 
.43 
.47 
.43 
.40 

.48- 
.40 
.38 
.36 
.42 

.45 



.58 
.45 
.42 
.37 
.55 

.65 
.43 
.41 

.38 
.42 



0.34 
.32 
.32 
.32 



0.78 
.57 
.46 
.11 
.04 

.04 
.05 
.38 
.29 
.40 



Daily discharge, in second-feet, of Kapahi ditch at Kapahi, near Kapaa, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


8.0 
13.0 
15.5 
15.5 
15.5 

15.5 
15.5 
15.5 
15.5 
15.5 


11.8 
11.8 
11.8 
11.8 
11.2 

11.2 
11.2 
11.2 
11.8 
11.8 


33.5 
17.6 
71.0 
22.4 
15.5 

15.5 
23.2 
22.4 
27.0 
16.2 


17.6 
16.9 
14.8 
16.2 
18.4 

18.4 
19.2 
18.4 
19.2 
18.4 


11.8 
11.8 
12.4 
18.4 
16.2 

14.2 
13.0 
16.9 
13.0 
11.8 


13.0 
13.0 
13.6 
26.0 
17.6 

13.0 
12.4 
14.2 
16.9 
13.6 


11.2 
11.2 
11.2 
11.2 
11.8 

13.6 
30.0 
14.8 
15.5 
82.0 


11.8 
11.2 
10.6 
12.4 
36.0 

26.0 
18.4 
16.9 
20.8 
17.6 


17.6 
20.8 
16.2 
14.8 
13.0 

45.0 
16.2 
13.6 
13.0 
11.8 


18.4 
12.4 
27.0 
14.2 
14.8 

14.2 
18.4 
21.6 
18.4 
16.2 


12.4 
11.2 
11.2 
11.2 
20.8 

12.4 
11.8 
26.0 
24.0 
13.0 


60.0 
31.0 
20.8 
2.0 
.6 

.6 


2 


3 


4 


5 


6 


7 


8 


.8 


9 


14.8 


10.... 


9.5 
16.2 





86 



WATEE KESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, of Kapahi ditch at Kapahi, near Kapaa, Kauai, for 

1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


11 


16.2 
15. 5 
19.2 
21.6 
20.0 

17.6 
15.5 
14.2 
14.2 
14.2 

14.2 
14.2 
13.6 
13.6 
13.6 

13.0 
13.0 
13.0 
13.0 
12.4 
11.8 


11.2 
11.2 
11.2 
11.2 
11.2 

10.6 
10.6 
10.6 
10.6 
10.6 

11.2 
18.4 
42.5 
25.0 
16.2 

22.4 
16.9 
13.6 
13.6 


12.4 
j 9.0 
12.4 
12.4 
11.8 

11.8 
11.8 
16.2 
17.6 
18.4 

18.4 
17.6 
17.6 
17.6 
20.0 

17.6 
17.6 
17.6 
16.9 
16.9 
17.6 


18.4 
17.6 
17.6 
18.4 
17.6 

16.9 
26.0 
13.0 
8.5 

8.5 

8.0 
8.0 
8.0 
10.0 
16.9 

16.9 
16.2 
15.5 
14.2 
12.4 


11.8 
13.6 
15.5 
28.0 
43.5 

16.2 
15.5 
13.0 
11.8 
11.8 

13.6 
20.0 
17.6 
29.0 
14.8 

13.0 
41.0 
71.0 
20.8 
19.2 
13.6 


11.8 
11.8 
21.6 
13.6 
14.2 

"ii.2" 


45.0 
27.0 
38.5 
43.5 
20.0 

24.0 
30.0 
26.0 
20.0 
16.9 

16.9 
17.6 

18.4 
25.0 
16.2 

26.0 
15.5 
13.6 
14.2 
16.2 
14.2 


16.2 
13.6 
12.4 
13.6 
18.4 

13.6 
13.0 
13.6 
13.6 
14.8 

90.0 
35.0 
18.4 
20.0 
12. 4 

"aifo" 

20.8 


11.2 
11.2 
11.2 
10.6 
2.0 

4.2 
16.9 
11.8 
13.6 
12.4 

13.0 
11.8 
11.2 
10.6 
10.0 

10.0 
9.5 
11.2 
14.2 
16.9 


22.4 
16.2 
14.8 
13.6 
17.6 

20.0 

"63.'6" 

32.5 
20.0 
17.6 
14.2 
29.0 

41.0 
18.4 
16.9 
14.8 
17.6 
13.6 


12.4 
11.8 
10.6 
10.0 
20.0 

13.0 
10.6 
13.6 
14.2 
19.2 

43.5 

68.0 
32.5 
18.4 
14.8 

12.4 
11.8 
11.2 
27.0 
31.0 


16.2 


12 


15.5 


13 


9.0 


14 


7.5 


15 


7.5 


16 


10.6 


17 


12.4 


18 


11.8 


19 


16.2 


20 


17.6 


21...'. 


38.5 


22 


17.6 


23 


14.8 


24 


17.6 


25 


17.6 


26.. 


17.6 


27 


16.9 


28 


14.8 


29 


13.0 


30 


13.0 


31 


13.0 







Note. — The five discharge measurements made in 1911 and 1912 give a very well-denned curve that 
has a different slope from the curve of weir formula Q=3.33 LHf when L=20 feet. Daily discharge 
for 1912 determined from curve derived from meter measurements. Discharge interpolated for days for 
which gage heights are missing, Jan. 20 to 27 and Feb. 2 to 6. 

Monthly discharge of Kapahi ditch at Kapahi, near Kapaa, Kauai, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


January 


21.6 
42.5 
71.0 
26.0 
71.0 
26.0 
82.0 
90.0 
45.0 
63.0 
68.0 
60.0 


8.0 
10.6 

9.0 

8.0 
11.8 
11.2 
11.2 
10.6 

2.0 

12.4 

10.0 

.6 


14.8 
13.9 
19.1 
15.5 
19.2 
14.8 
22.5 
20.4 
13.5 
20.7 
18.7 
15.3 


910 

800 
1,170 

922 
1,180 

471 
1,380 
1,090 

803 
1,150 
1,110 

941 


B. 


February 


B. 


March 


A. 


April 


A. 


May. 


A. 


June 1-15, 30 


A. 


July 


A. 


August 1-25, 30-31 


A. 


September 


A. 


October 1-16, 20-31 


A. 


November 


A. 


December 


A. 






The period 








11,900 















Note.— No record obtained June 16-29, Aug. 26-29, and Oct. 17-19. Mean for June is mean of 16 days. 
Mean for August is mean of 27 days. Mean for October is mean of 27 days. 

KANEHA DITCH AT WEIR NEAR KEALIA, KAUAI. 

Location. — About 5 miles northwest of Kealia, a short distance below the outlet from 

the Kaneha reservoir. 
Records available. — January 1, 1909, to December 31, 1912. 
Gage. — Staff gage; read once a day; datum unchanged; record from Watson clock 

register established in 1910 believed unreliable. 
Discharge measurements. — Made with 20-foot sharp-crested weir. 
Accuracy. — Fair. 
Cooperation. — Estimates of daily discharge in million gallons furnished by Makee 

Sugar Co. 



ISLAND OF KAUAI. 87 

Daily discharge, in million gallons, of Kaneha ditch at weir near Kealia, Kauai, for 19 IS. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



7.09 
7.09 
7.09 
3.86 
3.86 

3.86 
3.86 
10.90 
3.86 
1.36 

1.36 
1.36 
3.86 
7.09 
1.36 

1.36 
1.36 
1.36 
1.36 
1.36 

1.36 
1.36 
1.36 
1.36 
1.36 

1.36 
1.36 
3.86 
1.36 
1„36 
1.36 



1.36 
1.36 
1.36 
1.36 
1.36 

1.36 
1.36 
1.36 
1.36 
1.36 

1.36 

1.36 
1.36 
1.36 
1.36 

1.36 
1.36 
1.36 
1.36 
1.36 

1.36 
1.36 

10.90 
5.39 

10.90 

10.90 
5.39 
5.39 
5.39 



15.40 
2.50 

10.90 
3.86 
1.36 

1.36 

7.09 

7.09 

7.09 

30.90 

30.90 
10.90 
30.90 
7.09 
15.40 

3.86 
3.86 
7.09 
3.86 
3.86 

3.86 

3.86 

3.86 

30.90 

30.90 

10.90 



3.86 
3.86 
3.86 



1.36 
1.36 
1.36 
1.36 
25.30 

8.94 
25.30 
15.40 
3.86 
3.86 

3.86 
3.86 
15.40 
3.86 
3.86 

3.86 
3.86 
10.90 
7.09 
3.86 

3.86 
3.86 
3.86 
3.86 
3.86 

3.86 
3.86 
1.36 
1.36 
1.36 



1.36 
1.36 
1.36 
1.36 
1.36 

1.36 
1.36 
1.36 
1.36 
1.36 

1.36 

7.09 
3.86 
15.40 
7.09 

1.36 
1.36 
1.36 
1.36 
1.36 

1.36 

1.36 
1.36 
1.36 
1.36 

1.36 

7.09 
15.40 
3.86 
1.36 
1.36 



1.36 
1.36 
1.36 
1.36 
1.36 

1.36 
1.36 
1.36 
1.36 
1.36 

1.36 
1.36 
15.40 
1.36 
1.36 

1.36 
1.36 



3.86 
3.86 



10.90 



10.90 
1.36 



1.36 
1.36 
1.36 
1.36 
1.36 

1.36 

20.10 

1.36 

3.86 

25.30 

43.20 
10.90 
10.90 
56.70 
10.90 

10.90 
7.09 
3.86 
3.86 
3.86 



1.36 
1.36 



1.36 
1.36 
1.36 
1.36 
10.90 

1.36 
1.36 
1.36 
1.36 
1.36 

1.36 
1.36 
1.36 
20.10 
3.86 

1.36 
1.36 
1.36 
1.36 
1.36 

3.86 
7.09 
1.36 
3.86 
1.36 

1.36 

10.90 
3.86 
7.09 
7.09 



1.36 
1.36 
1.36 
1.36 
1.36 

10.90 
1.36 



36 



1.36 
1.36 
1.36 
1.36 
1.36 

7.09 
7.09 
1.36 
1.36 
1.36 

1.36 
1.36 
1.36 
8.94 
8.94 

1.36 
3.86 
5.39 



8.94 
3.86 
10.90 
5.39 
5.39 

5.39 
5.39 
10.90 
7.09 
5.39 

7.09 
7.09 
7.09 
7.09 
5.39 

7.09 
5.39 
7.09 
20.10 
15.40 

20.10 
7.09 
7.09 
5.39 

20.10 

8.94 
5.39 
5.39 
5.39 
7.09 
5.39 



5.39 
5.39 
5.39 
5.39 
5.39 

5.39 
5.39 
10.90 
5.39 
5.39 

5.39 
5.39 
5.39 
5.39 
5.39 

5.39 
5.39 
5.39 



10.90 
20.10 
8.94 
5.39 
5.39 

5.39 
5.39 
5.39 
13.00 
13.00 



20.10 
30.90 
37.00 
20.10 
10.90 

7.09 
7.09 
7.09 
10.90 
7.09 

7.09 
7.09 
7.09 
7.09 
7.09 

20.10 
10.90 
3.86 
3.86 
3.86 

20.10 
15.40 
7.09 
10.90 
15.40 

10.90 
3.86 
1.36 
1.36 
1.36 
1.36 



Note.— Daily discharge, in million gallons, furnished by Makee Sugar Co. Discharge computed from 
formula for a 20-foot sharp-crested weir without end contractions. Current-meter measurements show the 
discharge obtained from formula to be too high by 10 to 12 per cent. 

Monthly discharge of Kaneha ditch at weir near Kealia, Kauai, for 1912. 



Month. 


Discharge in million gallons. 


Run-off 
(total in 


Maximum. 


Minimum. 


Mean. 


million 
gallons). 


January 


10.90 
10.90 
30.90 
25.30 
15.40 
15.40 
56.70 
20.10 
10.90 
20.10 
20. 10 
37.00 


1.36 
1.36 
1.36 
1.36 
1.36 
1.36 
1.36 
1.36 
1.36 
3.86 
3.86 
1.36 


2.97 
2.90 
9.96 
5.99 
2.98 
3.21 
8.20 
3.54 
2.95 
8.22 
6.77 
10. 50 


92.12 


February 


84.18 


March 


308. 85 


April 


179. 61 


May 


92.43 


June.. 


96.42 


July 


254. 14 


August 


109. 67 


September 


88.49 


October 


254. 82 


November 


203. 14 


December 


325. 38 






The year 


56.70 


1.36 


5.71 


2,089.25 





ANAHOLA RIVER BASIN. 
ANAHOLA RIVER AT 1,140-FOOT ELEVATION NEAR KEALIA, KAUAI. 

Location. — About 8 miles northwest of Kealia, Kauai, and 60 feet above the lower 

falls. 
Records available.— March 28 to December 31, 1912. 
Gage. — Inclined staff; read at irregular intervals; datum unchanged. 
Channel. — Rock; probably permanent. 
Discharge measurements. — Made by wading. 



88 



WATER RESOURCES OP HAWAII, 1912. 



Discharge measurements of Anahola River at 1,140-foot elevation, near Kealia, Kauai, in 

1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 28 

Apr. 21" 

24 

28 


W.V.Hardy 

do 

.....do 

do 


Feet. 
9.88 

10.00 
9.87 
9.82 


Sec.-ft. 
5.95 
7.67 
5.59 
4.49 


May 1 
June 26 
Oct. 24 
Nov. 11 


W. V. Hardy 

do 

do 

Larrison and Hardy 


Feet. 
9.72 
9.56 
9.79 
9.74 


Sec.-ft. 
2.82 
1.72 
3.54 
3.41 









a Measurement made about 5 feet below gage. 

Note.— All measurements made at same section about one-quarter mile above gage unless otherwise 
noted. 

Daily gage height, in feet, of Anahola River at 1,140-foot elevation, near Kealia, Kauai, 

for 1912. 

[Shiraki, observer.] 



Day. 


Mar. 


Apr. 


May. 


June. 


July. 


Nov. 


Day. 


Mar. 


Apr. 


May. 


June. 


July. 


Nov. 


1 






9.72 
9.72 
9.72 


'9." 75* 


9.62 
9.62 
9.70 




17... 














2 






18 








9.65 






3.. 






19 






9.71 






4 






20 






9.62 






5... 






9.78 


9.72 






21 




9.99 


9.72 


















6 


22 




9.60 
"9." 52" 

9.56 
9.65 
9.60 
9.65 






7 






9.89 


9.70 






23 






9.89 
"9.'90" 


9.80 
10.22 
9.88 

11.15 
10.35 




8 










24 




9.87 
9.96 




9 










9.90 
11.00 

10.75 
10.00 


"9.75 
9.65 
9.70 
10.00 

9.72 


25. 






10 






9.69 


9.70 


26 














11 


27 






10.00 
10.15 




12 






9.67 


i6.'30" 


28 




9.82 




13 






29 








14 






9.72 


30 








9.85 
9.85 




15. 






9.72 




31 






9.83 






16. 






9.83 























Note.— Miscellaneous gage readings obtained when observer was in vicinity of station. 

ANAHOLA RIVER ABOVE DAM AT KIOKALA, NEAR KEALIA, KATXAI. 

Location. — About one-fourth mile above the dam at Kiokala and 6 miles northwest 
of Kealia. 

Records available. — August 22, 1910 to December 31, 1912. 

Gage. — Inclined staff installed August 22, 1910; datum unchanged. Friez automatic 
gage was carried away by a flood November 2, 1910, and the station relocated at 
the dam at Kiokala on December 15, 1910, where it was maintained until Decem- 
ber 28, 1912, when equipment was moved back to its first site about one-fourth 
mile above the dam, and Friez automatic register was installed. 

Channel. — Bed of stream rocky and permanent. 

Discharge measurements. — By wading and from footbridge. 

Cooperation. — Station maintained in cooperation with the Makee Sugar Co. 

Discharge measurements of Anahola River above dam at Kiokala near Kealia, Kauai, in 

1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Apr. 24 
May 2 


W.V.Hardy 

do 


Feet. 

1.05 
.90 
.81 

1.10 


Sec.-ft. 
17.1 
11.9 
8.72 
19.6 


Dec. 22 
25 
28 


W.V.Hardy...... 

do 


Feet. 
1.38 
1.17 
.98 


Sec.-ft. 
37.7 
23.0 


do 


do 


13.3 


Dec. 22 


do 







ISLAND OF KAUAI. 
The following gage readings were made during the year: 



89 



Apr. 


May. 


June. 


July. 


Sept. 


Dec. 


Day. 


Gage 
height. 


Day. 


Gage 
height. 


Day. 


Gage 
height. 


Day. 


Gage 
height. 


Day. 


Gage 
height. 


Day. 


Gage 
height. 


25 

27 


1.10 
1.00 


4 

10 

18 

25 

28 


0.95 
.86 
.92 
.91 

1.59 


1 

8 

15 

22 


0.90 

.84 
.81 
.79 


10 

13 

15 


1.90 

2.09 
1.41 


19 


1.30 


22 

23 

24 

25 

26 

27 

28 

29 

30 


1.24 

1.08 

1.51 

1.34 

1.24 

1.02 

.96 

.94 

.92 



ANAHOLA DITCH AT KIOKALA, NEAR KEALIA, KAUAI. 

Location. — About 6 miles northwest of Kealia. 

Records available.— May 10, 1909, to December 31, 1912. 

Gage. — Watson clock register; datum unchanged. 

Discharge measurements. — 10-foot sharp-crested weir, iron crest. 

Accuracy. — Records good. 

Cooperation. — Station maintained in cooperation with the Makee Sugar Co. 

Daily discharge, in second-feet, of Andhola ditch at Kiolcala, near Kealia, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


7.5 
7.5 
7.5 
8.7 
9.7 

6.3 
3.7 
1.9 
.5 
5.5 

5.5 
5.5 
5.7 
6.6 
8.1 

7.8 
8.1 
7.2 
6.9 
8.7 

6.3 
5.5 
5.5 
5.7 
5.2 

4.9 
4.4 
6.6 
3.9 
0.0 
0.0 


5.5 
6.3 

7.8 
6.6 
5.7 

5.5 
5.5 
5.2 
5.2 
4.9 

5.7 
4.9 
4.7 

4.7 
4.4 

4.4 
4.2 
4.7 
5.5 
4.2 

4.7 
7.5 
14.3 
13.2 
10.4 

10.7 
9.0 
6.6 
6.3 


12.5 
7.8 
14.3 
10.4 

7.2 

7.2 
10.4 
11.1 
17.9 

18.7 

17.9 
16.3 
20.0 
20.0 
15.5 

14.3 
13.2 
14.3 
11.4 
14.0 

11.8 
10.4 
10.4 
14.0 
19.1 

15.9 
14.7 
13.6 
12.1 
11.1 
11.1 


10.7 
9.4 
8.7 
12.5 
16.3 

15.9 
18.3 
16.3 
16.3 
14.3 

13.2 
12.8 
13.2 
15.1 
13.2 

13.6 

10.7 
10.7 
10.4 
9.4 
8.4 


7.8 
7.8 
7.8 
8.4 

8.7 

7.8 
7.5 
10.7 
6.9 
6.0 

5.7 
8.4 
7.2 
13.2 
15.9 

11.4 
11.8 
8.1 
7.2 
6.6 

6.3 
9.4 
7.8 
12.5 
8.1 

6.3 
9.4 
16.7 
14.7 
10.1 
8.1 


7.-2 
6.3 
6.0 
6.3 
5.5 

4.9 
4.7 
4.7 
5.2 
6.0 

4.7 
4.9 

7.5 
6.0 
4.4 

4.4 
4.2 
3.9 
4.2 
3.9 

3.4 

'"*4.*2" 

2.8 


2.3 
1.6 
2.8 
2.8 
.9 

6.3 
11.8 
7.2 
9.7 
22.0 

22.0 

16.7 
18.7 
25.0 
22.0 

19.1 
21.0 
17.5 
14.7 
12.5 

11.4 

10.7 
10.7 
13.6 
9.4 

12.5 
9.4 

8.4 

8.7 
14.0 

8.7 


7.2 
6.3 
6.0 

7.8 
17.5 

15.1 
10.1 
10.1 
10.4 
8.1 

7.5 
7.5 
6.6 
16.7 
18.3 

12.8 
10.1 

8.4 
7.5 
7.8 

9.0 
15.9 
12.1 
9.4 
9.7 

7.8 
16.7 
9.7 
8.1 
14.3 
10.1 


11.8 
10.4 
10.4 
8.1 
7.2 

15.1 
10.7 
9.0 

8.7 
9.4 

7.2 
6.3 
5.7 
5.5 
4.9 

6.0 
11.1 
6.3 
6.9 
6.3 

5.7 
5.7 
4.9 
4.4 
4.2 

3.9 
3.7 
3.9 
5.7 
6.0 


6.6 
4.9 
8.7 
5.2 
5.2 

4.9 
6.9 
10.1 
11.1 
11.1 

10.7 
9.7 
8.1 

11.1 
7.5 

8.7 
6.0 
7.5 
18.7 
12.5 

14.0 
9.7 
8.1 
7.2 
9.0 

15.5 
10.7 
8.1 
8.7 
10.7 
9.4 


6.9 
6.0 
7.2 
6.0 
10.4 

7.2 
6.3 
9.4 
15.1 
7.5 

6.3 
5.7 
5.2 
4.7 
9.4 

6.6 
4.9 
6.0 
6.6 
5.2 

12.1 
16.7 
16.7 
10.7 

7.8 

6.9 
6.0 
6.9 
14.7 
16.3 


17.9 


2 


17.5 


3 


16.7 


4 


16.7 


5 


14.7 


6 


6.6 


7 


14.7 


8 


16.7 


9 


16.3 


10 -.. 


14.7 


11 


13.2 


12 


11.8 


13 


11.1 


14 


9.7 


15 


9.0 


16 


10 7 


17 


15.9 


18 


12 1 


19 


12 5 


20 


12 5 


21 


13.2 


22 


13.6 


23 


12.8 


24 


14 3 


25 


14 3 


26 


13.6 


27.: 


11.8 


28 


10 7 


29 


9.7 


30 


9.4 


31 


9 







Note. — Discharge computed from Francis's formula: Q=3.33 LH T when L=10 feet. Comparative 
measurements made in 1911 show a seepage loss in ditch between intake and weir. To find discharge at 
intake multiply discharge given by factor 1.55. 



90 WATER RESOURCES OF HAWAII, 1912. 

Monthly discharge of Andhola ditch atKiohala, near Kealia, Kauai, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



January 

February 

March 

April a 

May 

June& 

July 

August 

September 

October 

November 

December 

The period 



9.7 
14.3 
20.0 
18.3 
16.7 

7.5 
25.0 
18.3 
15.1 
18.7 
16.7 
17.9 



0.0 
4.2 
7.2 
8.4 
5.7 
2.8 
.9 
6.0 
3.7 
4.9 
4.7 



5.71 
6.49 

13.5 

12.8 
9.17 
5.01 
1.21 

10.5 
7.17 
9.24 
8.58 

13.0 



351.0 
373.0 
830.0 
534.0 
564.0 
229.0 
744.0 
646.0 
427.0 
568.0 
511.0 
799.0 



25.0 



C9.06 



,580 



a Ditch was dry Apr. 17-25. Mean for April is the mean of 21 days when ditch carried water, 
ft No record June 22-28; clock register out of order. Mean for June is the mean of 23 days. 
c Mean for year is mean for 350 days. 



KALIHIWAI RIVER BASIN. 
KALIHIWAI RIVER NEAR KILATJEA, KA.TJAI. 

Location. — About 2 miles southwest of Kilauea, at an elevation of about 600 feet, 
about 5 miles above mouth of river and one-half mile below Hoopouli Falls, and 
is reached by saddle horse on trail from Princeville plantation. 

Records available. — August 21 to December 31, 1912. 

Gage. — A vertical staff gage; read once each day; hour of reading irregular. 

Channel. — Practically permanent. 

Discharge measurements. — Made by wading. 

Cooperation. — Station maintained in cooperation with the Princeville plantation. 

The following discharge measurement was made by W. V. Hardy: 
August 21, 1912: Gage height, 6.22 feet; discharge, 33.9 second-feet. 

Daily gage height, in feet, of Kalihiwai River near Kilauea, Kauai, for 1912. 

[Kakimoto, observer.] 



Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




6.20 
6.25 
6.20 
6.20 
6.20 

6.40 
6.25 
6.20 
6.20 
6.20 

6.20 
6.20 
6.15 
6.10 
6.10 


6.00 
5.95 
5.92 
5.85 
5.85 

5.92 
5.98 
6.70 
6.30 
6.10 

6.00 
6.00 
6.00 
5.95 
5.90 


6.10 
6.00 
6.00 
5.98 
6.10 

6.25 
6.00 
6.00 
6.25 
6.00 

6.00 
5.98 
5.98 
5.95 
6.10 


6.18 
6.30 
6.6 
11.70 
7.10 

6.6 

6.4 

6.4 

6.35 

6.35 

6.32 
6.30 
6.30 
6.40 
6.35 


16 




6.10 

6.08 
6.08 
6.50 
6.50 

6.00 
5.92 
5.90 
5.95 
5.85 

5.80 
5.80 
5.80 
5.80 
5.90 


6.10 
6.00 
6.05 
6.20 
6.40 

6.60 
6.10 
6.20 
6.30 
6.25 

6.27 
6.25 
6.20 
6.18 
6.15 
6.13 


6.00 
6.00 
6.20 
6.10 
6.75 

6.20 
6.18 
6.10 
6.15 
6.10 

6.10 
6.05 
6.15 
6.20 
6.10 


6.30 


2 




17 




6.33 


3 




18 




6.38 


4 




19 




6.35 


5 




20 




6.30 


6 




21 

22 

23 

24 

25 

26 

27 

28 

29 

30 

31 


6.20 
6.80 
6.30 
6.20 
6.20 

6.20 
6.70 
6.30 
6.35 
6.30 
6.25 


6.30 


7 




6.30 


8 




6.45 


9 




6.40 


10 




6.40 


11 




6.38 


12 




6.35 


13 




6.30 


14 




6.28 


]5 




6 27 






6.20 



ISLAND OF KAUAI. 



91 



HANALEI RIVER BASIN. 
HANALEI RIVER NEAR HANALEI, KAUAI. 

Location.— About 5 miles up the river from Hanalei. 
Records available. — December 28, 1911, to December 31, 1912. 
Gage. — Staff gage; read once daily; datum unchanged. 
Channel. — Bowlders; probably permanent. 
Discharge measurements. — Cable and car. 

Discharge measurements of Hanalei River near Hanalei, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Feb. 20 


W. V. Hardy 


Feet. 
6.39 
7.42 


Sec.-ft. 
86.7 


Aug. 14 


do L 


665 









Daily gage height, in feet, of Hanalei River near Hanalei, Kauai, for 1912. 

[Sam Opio, observer.] 



Day. 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec 



1 
2 
3 
4 
5 

6 

7 

8 

9 

10 

11 
12 
13 
14 
15 

16 
17 
18 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



6.50 
6.55 
6.55 
6.50 

6.50 
6.60 
6.60 
6.70 
6.50 

6.40 
6.40 
6.40 
6.70 
6.50 

6.50 
6.50 
6.50 
6.50 
6.50 

6.50 
6.50 
6.50 
6.50 



6.50 
6.50 
6.50 
6.50 
6.50 
6.50 



6.5 
6.5 
6.5 
6.4 
6.4 

6.5 
6.5 
6.5 
6.5 
6.5 

6.4 
6.4 
6.4 
6.4 
6.5 

6.5 
6.5 
6.5 
6.5 
6.5 

6.5 
6.5 
6.5 



6.5 
6.5 
6.5 
6.5 



6.5 
6.5 



6.6 
6.7 
6.7 
6.7 
6.9 



6.8 
6.7 
6.6 
6.7 

6.7 
6.7 
6.7 
6.5 
6.5 

6.5 
6.5 
6.5 
7.0 
7.3 



6.5 
6.5 
6.5 



6.5 
6.5 
6.5 
6.6 



7.8 
7.8 
7.8 
7.8 

7.6 
7.6 
7.6 
7.5 
7.5 



7.9 

7.8 
7.7 

6.9 
6.7 
6.7 
6.7 
6.7 

6.7 
6.7 
6.7 
6.7 
6.7 



6.6 
6.6 

6.5 
6.6 
6.6 



6.5 
6.6 
6.4 

6.4 
6.5 
6.5 
6.5 
6.5 

6.5 
6.8 
6.8 
6.7 
6.5 
6.5 



6.5 
6.5 
6.4 
6.4 
6.4 

6.4 
6.4 
6.4 
6.4 
6.4 

6.4 
6.4 
6.4 
6.4 
6.4 

6.4 
6.4 
6.4 
6.4 
6.4 

6.4 
6.4 
6.5 
6.4 
6.4 

6.4 
6.4 
6.4 
6.4 
6.4 



6.5 
6.4 
6.4 
6.4 
6.5 

6.5 
6.5 
6.4 
6.4 



6.5 
6.5 
6.5 
6.5 
6.5 



6.5 
6.4 
6.4 
6.4 

6.5 
. 6.5 
6.4 
6.4 
6.4 

6.5 
6.5 
6.4 
6.4 
6.5 
6.5 



6.4 
6.4 
6.4 
6.4 
6.4 



6.4 
6.4 
6.4 
6.4 

6.4 

6.4 
6.4 
7.8 
6.5 

6.4 

6.4 
6.4 
6.4 
6.4 

6.4 
7.0 
6.6 
6.5 
6.4 

6.5 

8.1 
6.6 
6.5 
6.6 
6.5 



6.5 
6.6 
6.6 
6.5 



6.5 
6.4 
6.4 



6.4 
6.4 

6.5 

6.4 
6.4 
6.4 
6.4 

6.4 
6.4 
6.4 
6.4 
6.4 

6.4 

6.4 
6.4 
6.4 
6.4 



6.4 
6.4 
6.4 
6.4 
6.4 



6.3 
7.2 
6.5 
6.4 

6.4 
6.3 
6.3 
6.3. 



6.4 

6.4 
6.4 
6.4 



6.9 
6.7 
6.4 
6.4 
6.4 



6.4 



6.4 
6.4 
6.4 
6.4 
6.5 

6.5 

6.5 



6.5 

6.5 

6.4 
6.4 
6.4 
6.5 

6.4 
6.4 
6.5 
6.4 
6.5 

6.6 

6.8 
6.5 
6.4 
6.4 

6.4 
6.4 
6.4 
6.4 
6.4 



6.7 
6.9 
7.3 
6.5 
6.4 

6.4 
6.5 
6.6 
6.5 



6.5 
6.5 
6.5 
6.5 

6.5 
6.5 
6.5 
6.5 
6.5 

6.6 

6.8 
6.7 



6.5 
6.5 
6.5 
6.5 
6.5 



92 WATER RESOURCES OF HAWAII, 1912. 

Daily discharge, in second-feet, of Hanalei River near Hanalei, Kauai, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


171 
127 
149 
149 
127 

127 
171 
171 
220 
127 

88 
88 
88 
220 
127 

127 
127 
127 
127 
127 

127 
127 
127 
127 
171 

127 
■ 127 
127 
127 
127 
127 


127 
127 
127 

88 
88 

127 
127 
127 
127 
127 

88 
88 
88 
88 
127 

127 
127 
127 
127 
127 

127 
127 
127 
171 
171 

127 
127 
127 
127 


127 
127 
171 
171 
171 

171 
220 
220 
220 
330 

330 
273 
220 
171 
220 

220 
220 
220 
127 
127 

127 
127 
127 
389 
582 

220 
171 
171 
127 
127 
127 


127 
127 
127 
171 
171 

171 
930 
930 
930 
930 

790 
790 
790 
720 
720 

171 

1,530 

1,000 

930 

860 

330 

220 
220 
220 
220 

220 

220 
220 
220 
220 


220 
171 
171 
171 
171 

127 
171 
171 
171 
171 

171 

88 

88 

171 

273 

171 
171 
127 
171 

88 

88 
127 
127 
127 
127 

127 
273 
273 
220 
127 
127 


127 
127 

88 
88 
88 

88 
88 
88 
88 
88 

88 
88 
88 
88 
88 

88 
88 
88 
88 
88 

88 
88 
127 
88 
88 

88 
88 
88 
88 
88 


127 
88 
88 
88 

127 

127 
1-27 
88 
88 
171 

127 
127 
-127 
127 
127 

88 
127 
88 
88 
88 

127 
127 

88 
88 
88 

127 
127 
88 
88 
127 
127 


88 
88 
88 
88 
88 

88 
88 
88 
88 
88 

88 
88 
88 
930 
127 

88 
88 
88 
88 
88 

88 
389 
171 
127 

88 

127 
1,150 
171 
127 
171 
127 


127 
171 

171 
127- 
171 

1,530 
171 

127 

88 
88 

88 
88 
88 
88 
88 

127 
88 
88 
88 
88 

88 
88 

88 
88 
88 

88 
88 
88 
88 
88 


88 
88 
88 
88 
88 

55 

55 

515 

127 

88 

88 
55 
55 
55 
55 

88 
88 
88 
88 
330 

330 

220 

88 
88 
88 

171 
88 
171 
127 
127 
88 


88 
88 
88 
88 
127 

127 
127 
171 
171 
127 

127 
88 
88 
88 

127 

88 
88 

127 
88 

127 

171 
273 
127 

88 

88 

88 
88 
88 
88 
88 


220 


2 


330 


3 


582 


4 


127 


5 


88 


6 


88 


7 


127 


8 


171 


9 


127 


10 -. 


171 


11 


171 


12 


127 


13 


127 


14 


127 


15 


127 


16 


127 


17 


127 


18 


127 


19 


127 


20 


127 


21 


171 


22 


273 


23 


220 


24 


330 


25 


171 


26 


171 


27 : . . . 


127 


28 


127 


29 


127 


30 


127 


31 


127 







Monthly discharge of Hanalei River near Hanalei, Kauai, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. 



Minimum. 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



220 

171 

582 

1,530 

273 

127 

171 

1,150 

1,530 

515 

273 

582 



1,530 



55 



136.0 
122.0 
205.0 
508.0 
161.0 
91.9 
111.0 
173.0 
152.0 
124.0 
114.0 
171.0 



55 



172.0 



8,360 
7,020 

12,600 

30,200 
9,900 
5,470 
6,820 

10,600 
9,040 
7,620 
6,780 

10,500 



125,000 



CHINA DITCH NEAR HANALEI, KAUAI. 

Location. — About one-fourth mile below the point of diversion from Hanalei River 

and nearly opposite Sam Opio's house. 
Records available. — December 28, 1911, to December 31, 1912. 
Gage. — Vertical staff; read once each day, about 10 a. m.; datum unchanged. 
Channel. — Probably permanent. 
Discharge measurements. — Made from footbridge. 



ISLAND OF KAUAI. 93 

Discharge measurements of China ditch near Hanalei, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Feb. 20 


W. V. Hardy. 


Feet. 
3.50 
4.00 


Sec.-ft. 
15.4 


Aug. 14 


..do 


33.0 







Daily gage height, in feet, of China ditch near Hanalei, Kauai, for 1912. 
[Sam Opio, observer.] 



Day. 



21.. 
22.. 
23.. 
24.. 
25.. 



Jan. 



3.4 

3.3 

3.35 

3.3 

3.3 

3.3 
3.4 
3.4 
3.6 
3.5 

3.4 
3.4 
3.5 
3.6 
3.4 

3.4 
3.4 
3.4 
3.4 
3.4 

3.4 
3.4 
3.4 
3.4 
3.5 

3.4 
3.4 
3.4 
3.4 
3.4 
3.4 



Feb. 



3.4 
3.4 
3.4 
3.3 
3.3 

3.4 
3.4 
3.4 



3.4 

3.4 
3.6 
3.6 
3.6 
3.6 

3.5 
3.5 
3.5 
3.5 
3.5 

2.5 
3.5 
3.5 
3.6 
3.6 

3.4 

3.4 
3.5 
3.6 



Mar. 



3.6 
3.5 
3.6 
3.5 
3.5 

3.3 

3.4 
3.4 
3.4 
2.9 

2.9 

2.8 
2.7 
2.7 
2.8 

2.8 
2.8 
2.9 
2.9 
3.0 

3.0 
3.0 
3.0 
3.0 
3.2 

2.9 

2.8 
2.8 
2.7 
2.7 
2.7 



Apr. 



6 

7 
7 

7 

5 

3.5 

3.4 

3.4 

3.4 
3.4 
3.4 
3.3 
3.3 

2.8 
5.1 

4.9 
4.8 
4.6 



May. 



3.1 
3.1 



3.2 



3.6 
3.5 
3.5 
3.3 



June. 



0.33 
.33 
.32 
.32 
.32 

.32 
.32 
.32 
.32 
.32 

.32 
.32 
.32 
.32 
.32 

.32 
.32 
.32 
.33 
.32 

.32 
.32 
.33 
.32 
.32 

.32 
.32 
.32 
.32 
.32 



July. 



3.3 
3.2 
3.2 
3.2 
3.3 

3.3 
3.4 
3.4 
3.4 
3.5 

JSA 

3.4 
3.4 
3.5 
3.5 

3.4 
3.4 
3.4 
3.4 
3.4 

3.3 
3.3 
3.2 
3.2 
3.3 

3.3 
3.3 
3.2 
3.2 
3.3 
3.3 



Aug. 



3.2 
3.2 
3.2 
4.6 
3.4 

3.2 

3.2 
3.2 
3.2 
3.2 

3.2 

4.2 
3.6 
3.4 
3.3 

3.4 
4.8 
3.6 
3.4 
3.5 
3.4 



Sept. 



5.1 
3.6 
3.2 
3.2 
3.2 

3.2 

3.2 
3.2 
3.2 
3.2 

3.6 

4.0 
4.0 
4.0 



3.9 
3.9 
3.9 
3.8 

3.8 
3.8 
4.0 
4.0 
4.0 



Oct. 



4.0 
4.0 
4.0 
4.0 
4.0 

3.9 
3.9 

5.8 
4.2 
4.0 

4.0 
3.9 
3.9 
3.9 
3.9 

4.0 
4.0 
4.0 
4.0 
4.9 

4.9 
4.3 
4.0 
4.0 
4.0 

4.5 

4.0 
4.5 
4.3 
4.3 
4.0 



Nov. 



4.0 
4.0 
4.0 
4.0 
4.2 

4.2 
4.2 
4.3 
4.3 
4.1 



4.3 

4.6 



Dec. 



5.9 
4.2 
4.1 

4.1 
4.2 
3.6 
3.2 
3.3 



3. 
3. 

3. 
3. 
3. 
3. 
3.1 

3.2 

3.5 
3.4 
3.7 
3.2 



3.2 
3.2 
3.2 
3.2 
3.2 
3.2 



KTJNA DITCH NEAR HANALEI, KAOAI. 

Location. — About 4 miles up the river from Hanalei and 500 feet below the intake. 

Records available. — January 17 to December 31, 1912. 

Gage. — Vertical staff; read once daily, in the morning; datum unchanged. 

Channel. — Probably permanent. 

Discharge measurements. — Made from a footbridge. 

Accuracy. — Records fair. 

Discharge measurements of Kuna ditch near Hanalei, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Jan. 17 


W. V.Hardy 


Feet. 
3.83 
4.40 
5.12 


Sec.-ft. 
10.9 


Feb. 20 


do 


18.5 


Aug. 19 


.....do 


32.5 









94 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, of Kuna ditch near Hanalei, Kauai, for 1912. 
[W. K. Samuel, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




3.8 
3.8 
3.8 
3.7 
3.7 

3.8 
3.8 
3.8 
3.8 
3.8 

4.4 
4.4 
4.4 
4.4 
4.4 

4.4 
4.4 
4.4 
4.4 
4.4 

4.4 
4.4 
4.4 
4.0 
4.0 

4.5 
4.5 
4.5 
4.5 


4.5 
4.5 
4.6 
4.6 
4.6 

4.6 

4.7 
4.7 
4.7 
4.8 

4.8 
4.7 
4.7 
4.6 

4.7 

4.7 
4.7 
4.8 
4.8 
4.9 

4.9 
4.9 
4.9 
5.1 
5.3 

4.8 
4.7 
4.7 
4.6 
4.6 
4.6 


4.5 
4.5 
4.5 
4.6 
4.6 

4.6 
4.9 
4.9 

4.8 

4.8 

4.7 
4.7 
4.7 
4.6 
4.6 

4.4 
5.6 
5.3 
5.2 
5.0 

4.9 
4.6 
4.7 

4.7 
4.7 

4.7 
4.7 
4.7 
4.7 
4.7 


4.7 
4.6 
4.6 
4.6 
4.6 

4.6 
4.6 
4.6 
4.6 
4.6 

4.6 
4.5 
4.5 
4.6 

4.8 

4.6 
4.6 
4.5 
4.5 
4.5 

4.5 
4.6 
4.6 
4.6 
4.6 

4.6 
4.9 
4.9 
4.7 
4.6 
4.5 


4.5 
4.5 
4.5 
.4.5 
4.5 

4.5 
4.5 
4.4 
4.4 
4.4 

4.4 
4.4 
4.4 
4.4 
4.4 

4.4 
4.4 
4.4 
4.5 
4.4 

4.4 
4.4 
4.5 
4.4 
4.4 

4.4 
4.4 
4.4 
4.4 
4.4 


5.5 
5.3 
5.3 
5.3 

5.4 

5.4 
5.4 
5.3 
5.3 

5.4 

5.3 
5.3 
5.3 
5.5 
5.5 

5.4 
5.3 
5.3 
5.3 
5.3 

5.3 
5.3 
5.3 
5.3 
5.3 

5.4 
5.4 
5.4 
5.4 
5.4 
5.3 


5.3 
5.3 
5.1 
5.1 
5.1 

5.1 
5.1 
5.1 
5.1 
5.1 

5.1 
5.1 
5.1 
5.8 
5.3 

5.2 
5.2 
5.1 
5.1 
5.1 

5.1 
5.8 
5.2 
5.2 

5.2 

5.4 
5.8 
5.5 
5.4 
5.5 
5.4 


5.3 
5.5 
5.5 
5.5 
5.5 

5.8 
5.3 
5.3 
5.3 
5.3 

5.3 
5.3 
5.3 
5.3 
5.3 

5.5 
5.3 
5.3 

5.2 
5.2 

5.2 
5.0 
5.0 
5.0 
4.9 

4.9 
4.9 

4.8 
4.8 
4.8 


4.7 
4.7 
4.7 
4.7 
4.7 

4.7 
4.7 
5.5 
5.1 
4.8 

4.8 
4.7 
4.7 
4.7 
4.7 

4.8 
4.8 
4.8 
4.8 
5.8 

5.8 
5.6 
4.8 

4.8 
4.8 

5.1 
4.8 
5.1 
5.0 
5.0 
4.8 


4.8 
4.8 
4.8 
4.8 
5.0 

5.0 
5.0 

5.1 
5.1 
5.4 

5.4 
5.3 
5.3 
5.3 
5.5 

5.4 
5.4 
5.5 
5.4 
5.5 

5.6 
5.8 
5.5 
5.4 
5.4 

5.4 
5.4 
5.3 
5.3 
5.3 


5.6 


2 




5.8 


3 




6.2 


4 




5.5 


5 




5.4 


6. . 




5.4 


7.... 




5.5 


8 




4.2 


9 




4.1 


10 




4.2 


11 




4.2 


12 




4.1 


13 




4.1 


14 




4.1 


15 




4.1 


16 




4.1 


17 


3.8 
3.8 
3.8 
3.8 

3.8 
3.8 
3.8 
3.8 
3.9 

3.8 
3.8 
3.8 
3.8 
3.8 
3.8 


4.1 




4.1 


19 


4.1 




4.1 


21 


4.2 


22 


4.5 


23 


4.4 


24 


4.7 


25 


4.2 


26 


3.2 


27 


3.2 


28 


3.2 


29 


3.2 


30 


3.2 


31 


3.2 







Daily discharge, in second-feet, of Kuna ditch near Hanalei, Kauai, for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



10.4 
10.4 
10.4 
10.4 

10.4 
10.4 
10.4 
10.4 
11.5 

10.4 
10.4 
10.4 
10.4 
10.4 
10.4 



10.4 
10.4 
10.4 
9.3 
9.3 

10.4 
10.4 
10.4 
10.4 
10.4 

18.4 
18.4 
18.4 
18.4 
18.4 

18.4 
18.4 
18.4 
18.4 
18.4 

18.4 
18.4 
18.4 
12.7 
12.7 

20.0 
20.0 
20.0 
20.0 



20.0 
20.0 
22.0 
22.0 
22.0 

22.0 
24.0 
24.0 
24.0 
26.0 

26.0 
24.0 
24.0 
22.0 
24.0 

24.0 
24.0 
26.0 
26.0 
28.0 

28.0 
28.0 
28.0 
32.0 
37.0 

26.0 
24.0 
24.0 
22.0 
22.0 
22.0 



20.0 
20.0 
20.0 
22.0 
22.0 

22.0 
28.0 
28.0 
26.0 
26.0 

24.0 
24.0 
24.0 
22.0 
22.0 

18.4 
44.0 
37.0 
35.0 
30.0 

28.0 
22.0 
24.0 



24. 
24. 

24. 
24. 
24. 
24. 
24.0 



24.0 
22.0 
22.0 
22.0 
22.0 

22.0 
22.0 
22.0 
22.0 
22.0 

22.0 
20.0 
20.0 
22.0 
26.0 

22.0 
22.0 
20.0 
20.0 
20.0 

20.0 
22.0 
22.0 
22.0 
22.0 

22.0 
28.0 
28.0 
24.0 
22.0 
20.0 



20.0 
20.0 
20.0 
20.0 
20.0 

20.0 
20.0 
18.4 
18.4 
18.4 

18.4 
18.4 
18.4 
18.4 
18.4 

18.4 
18.4 
18.4 
20.0 
18.4 

18.4 
18.4 
20.0 
18.4 
18.4 

18.4 
18.4 
18.4 
18.4 
18.4 



42.0 
37.0 
37.0 
37.0 
39.0 

39.0 
39.0 
37.0 
37.0 
39.0 

37.0 
37.0 
37.0 
42.0 
42.0 

39.0 
37.0 
37.0 
37.0 
37.0 

37.0 
37.0 
37.0 
37.0 
37.0 

39..0 
39.0 
39.0 
39.0 
39.0 
37.0 



37.0 
37.0 
32.0 
32.0 
32.0 

32.0 
32.0 
32.0 
32.0 
32.0 

32.0 
32.0 
32.0 
49.0 
37.0 

35,0 
35.0 
32.0 
32.0 
32.0 

32.0 
49.0 
35.0 
35.0 
35.0 

39.0 
49.0 
42.0 
39.0 
42.0 
39.0 



37.0 
42.0 
42.0 
42.0 
42.0 

49.0 
37.0 
37.0 
37.0 
37.0 

37.0 
37.0 
37.0 
37.0 
37.0 

42.0 
37.0 
37.0 
35.0 
35.0 

35.0 
30.0 
30.0 
30.0 
28.0 

28.0 
28.0 
26.0 
26.0 
26.0 



24.0 
24.0 
24.0 
24.0 
24.0 

24.0 
24.0 
42.0 
32.0 
26.0 

26.0 
24.0 
24.0 
24.0 
24.0 

26.0 
26.0 
26.0 
26.0 
49.0 

49.0 
44.0 
26.0 
26.0 
26.0 

32.0 
26.0 
32.0 
30.0 
30.0 
26.0 



26.0 
26.0 
26.0 
26.0 
30.0 

30.0 
30.0 
32.0 
32.0 
39.0 

39.0 
37.0 
37.0 
37.0 
42.0 

39.0 
39.0 
42.0 
39.0 
42.0 

44.0 
49.0 
42.0 
39.0 
39.0 

39.0 
39.0 
37.0 
37.0 
37.0 



ISLAND OF KAUAI. 

Monthly discharge of Kuna ditch near Hanalei, Kauai, for 1912. 



95 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 17-31 

February 

March 

April 

May 

June 

July 

August 

September . . . 

October 

November 

December 



11.5 
20.0 
37.0 
44.0 
28.0 
20.0 
42.0 
49.0 
49.0 
49.0 
49.0 
60.0 



10.4 
9.3 
20.0 
18.4 
20.0 



18.4 
37.0 
32.0 
26.0 
24.0 
26.0 
5.0 



a 10. 5 
15.4 
24.7 
25.2 
22.2 
18.9 
38.1 
35.9 
35.3 
28.7 
36.4 
20.1 



The period . 



&26.7 



312 
886 
1,520 
1,500 
1,360 
1,120 
2,340 
2,210 
2,100 
1,760 
2,170 
1,240 



18,500 



a Mean for January is mean for 15 days. 



b Mean for year is mean for 351 days. 



LUMAHAI RIVER BASIN. 
LTTMAHAI RIVER NEAR WAINIHA, KATTAI. 

Location. — About 4£ miles west of Hanalei and 300 feet below the point at which 

the Kauai Electric Co.'s power line crosses the river. 
Records available. — March 24 to December 31, 1912. 
Gage. — Staff; datum unchanged. 
Channel. — Rocky; probably permanent. 
Discharge measurements. — Made from wire suspension bridge. 

Discharge measurements of Lumahai River near Wainiha, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Jan. 18 


W.V.Hardy 


Feet. 


Sec.-ft. 
74.7 


Mar. 26 


do 


7.99 
a8.08 


154 


Aug. 16 


d(K : 


107 









a Dam was built about 125 feet below the gage during April, 1912. 
Note.— Gage heights unreliable, not published. 



WAINIHA RIVER BASIN. 



WAINIHA RIVER NEAR WAINIHA, KAUAI. 



Location. — About 2 miles south of Wainiha and just northeast of the Kauai Electric 
Co . ' s power house . 

Records available. — East Channel, February 25 to December 31, 1912. West 
Channel, December 30, 1911, to December 31, 1912. 

Gage. — Inclined timber gages on both channels; read twice daily, 7 a. m. and 5 p. m. 

Channels. — There are two large channels, the East Channel and the West Channel, 
and two gages have to be maintained to obtain the total flow of the river at this 
point; both channels rocky and probably permanent. The natives build fish 
dams at the point where the river divides above the stations, and these shift the 
water from one channel to the other. 

Discharge measurements. — Made from wire suspension bridges over each channel. 

Cooperation. — Stations maintained in cooperation with the Kauai Electric Co. 



96 WATER RESOURCES OF HAWAII, 1912. 

Discharge measurements of East Channel of Wainiha River near Wainiha, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 19 


W. V. Hardy 


Feet. 
6.44 
8.90 
6.89 


Sec-ft. 
6.6 


25 




364 


Aug. 23 


do 


18.5 







Daily gage height, in feet, of East Channelof Wainiha River near Wainiha, Kauai, for 1912 

[Kauai Electric Co., observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 






7.95 
7.75 
7.95 
7.55 
7.65 

7.70 
7.45 
7.70 
8.25 
8.85 

9.85 
8.55 
8.05 
7.75 
7.40 

7.20 
6.95 
6.80 
6.45 
7.10 

7.00 
6.70 
6.55 
7.10 
9.15 

7.25 
7.00 
7.20 
6.90 
6.85 
6.85 


7.10 
6.90 
6.75 
7.15 
7.15 

7.95 

8.85 
9.20 
8.80 
7.75 

7.55 
7.65 
7.35 
7.20 
7.25 

6.95 
7.35 
7.00 
6.65 
6.45 

6.50 
6.60 
6.65 
6.70 
6.75 

6.80 
6.65 
6.60 
6.65 
6.50 


6.65 
6.70 
6.85 
6.90 
7.05 

7.00 
7.10 
7.20 
6.80 
6.70 

6.70 
6.70 
6.80 
8.15 

7.75 

7.10 
7.05 
6.95 
6.80 
6.80 

6.85 
7.15 
6.90 
7.00 
6.85 

6.80 
7.00 
8.85 
7.90 
7.10 
6.90 


6.80 
6.80 
6.80 
6.90 
6.80 

6.80 
6.80 
6.80 
6.90 
6.80 

6.80 
6.80 
6.90 
6.80 
6.85 

6.90 
6.80 
6.90 
6.95 
7.00 

7.00 
6.85 
6.85 
6.95 
6.80 

6.80 
6.80 
6.70 
6.70 
6.70 


6.75 
6.70 
6.70 
6.70 
6.85 

6.95 
7.25 
6.75 
7.08 
8.12 

8.20 
7.40 
8.70 
7.55 
7.30 

6.88 
8.05 
6.82 
6.75 
6.75 

6.85 
6.75 
6.75 
6.85 
6.70 

6.95 
6.75 
6.60 
6.65 
6.75 
6.70 


6.60 
6.58 
6.50 
6.55 
6.80 

6.95 
7.05 
7.20 
7.10 
6.65 

6.80 
6.75 
6.95 
8.75 
7.20 

6.80 
6.65 
6.60 
6.60 
6.60 

6.90 
7.05 
6.85 
6.80 
6.68 

6.70 

7.80 
7.65 
7.65 
8.15 
7.95 


7.40 
7.30 
7.20 
6.90 
6.75 

8.80 
7.35 
6.90 
6.90 
6.70 

6.70 
6.68 
6.50 
6.42 
6.50 

6.50 
6.70 
6.58 
6.50 
6.50 

6.55 
6.85 
6.65 
6.62 
6.55 

6.50 
6.50 
6.65 
6.70 
6.70 


6.85 
6.80 
7.30 
6.65 
6.80 

6.75 
6.75 
6.82 
6.85 
7.00 

6.70 
6.70 
6.80 
6.80 
6.70 

6.85 
7.22 
7.05 
7.38 
7.40 

8.05 
7.30 
7.10 
6.80 
6.85 

8.70 
7.20 
7.20 
6.90 
7.00 
7.15 


6.80 
6.60 
6.70 
6.65 
6.65 

6.60 
6.70 
7.80 
8.30 
6.90 

6.75 
6.60 
6.60 
6.60 
6.85 

6.75 
6.70 
6.75 
7.05 
6.85 

8.30 
8.35 
8.00 
6.95 
6.75 

6.70 

6.65 
6.70 
8.15 
8.30 


8.55 


2 






10.05 


3 






11.35 


4 






8.35 


5 






7.20 


6 






7.05 


7 






6.85 


8 






6.95 


9 






6.95 


10 






6.70 


11 






6.65 


12 






6.60 


13 






6.70 


14 






6.65 


15 






6.70 


16 






6.85 


17 






6.70 


18 






6.70 


19 






6.75 


20 






7.05 


21 






6.95 


22 






7.05 


23 






7.70 


24 






8.50 


25 




6.70 

6.60 
6.80 
6.75 
6.85 


8.25 


26 '.. 




8.00 


27 




6.90 


28 




6.85 


29 




6.70 


30 




6.70 


31 






6.70 











Discharge measurements of West Channelof Wainiha River near Wainiha, Kauai, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 19 


W. V. Hardy 


Feet. 
5.60 
6.55 
5.74 


Sec-ft. 
143 


24 


do 


578 


Aug. 23 


do 


162 







ISLAND OF KAUAI. 



97 



Daily gage height, in feet, of West Channel of Wainiha River near Wainiha, Kauai, for 1913, 

[Kauai Electric Co., observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


5.40 
5.50 
5.60 
5.50 
5.60 

5.50 
5.50 
5.70 
5.60 
5.55 

5.40 
5.50 
5.70 
5.60 
5.50 

5.40 
5.40 
5.40 
5.40 
5.40 

5.40 
5.40 
5.45 
5.70 
5.55 

5.45 
5.60 
5.50 
5.50 
5.55 
6.60 


5.45 
5.75 
5.80 
5.75 
5.60 

5.50 
5.50 
5.55 
5.60 
5.60 

5.65' 

5.55 

5.55 

5.55 

5.55 

5.50 
5.50 
5.65 
5.60 
5.65 

5.95 
6.10 
6.20 
6.10 
6.90 

5.85 
5.95 
5.75 
5.80 


6.20 
5.95 
6.15 
5.90 
5.90 

6.15 
5.90 
6.00 
6.35 
6.75 

6.90 
6.30 
6.00 
5.90 
5.75 

5.75 
5.75 
5.65 
5.55 
5.95 

6.00 
5.75 
6.65 
5.90 
6.55 

5.95 

5.80 
5.90 
6.80 
5.80 
5.85 


5.95 
5.80 
5.65 
5.90 
6.00 

6.30 
6.55 
6.70 
6.65 
6.15 

5.90 
6.00 
5.85 
5.90 
5.95 

5.85 
6.20 
6.95 
5.65 
5.65 

5.55 
6.55 
5.55 
5.60 
5.65 

5.75 
5.90 
5.70 
5.75 
5.65 


5.60 
5.60 
5.62 
5.65 
5.75 

5.60 
5.60 
5.70 
5.60 
5.50 

5.50 
5.50 
5.85 
6.25 
6.00 

5.65 
5.65 
5.55 
5.60 
5.60 

5.65 
5.75 
5.65 
5.75 
5.65 

5.60 
5.80 
6.30 
6.00 
5.60 
5.60 


5.60 
5.55 
5.50 
5.60 
6.55 

6.50 
5.50 
5.50 
5.60 
5.50 

5.50 
5.50 
5.60 
5.50 
5.55 

5.55 
5.50 
5.70 
5.75 
5.70 

5.65 
5.55 
5.65 
5.70 
5.55 

5.50 
5.58 
5.50 
5.50 
5.50 


5.55 
5.50 
5.50 
5.50 
5.60 

5.70 

5.80 
5.65 
5.70 
6.15 

6.05 
5.70 
6.15 
5.95 
5.85 

5.70 
6.05 
5.65 
6. CO 
5.55 

5.60 
5.60 
5.60 
5.65 
5.60 

5.75 
6.60 
5.50 
5.55 
5.55 
5.50 


5.50 
5.50 
5.50 
5.40 
5.70 

5.75 
5.80 
5.95 
5.90 
5.60 

5.65 
5.55 
5.70 
6.45 
6.00 

5.70 
6.55 
5.50 
5.50 
5.50 

5.70 
5.80 
5.70 
5.65 
5.70 

5.60 
6.30 
5.90 
5.75 
6.40 
6.00 


6.10 
6.05 
5.95 
5.80 
5.65 

6.55 

5.95 

5.80 

5.7 

5.55 

5.5 

5.5 

5.45 

5.40 

5.50 

5.50 

5.60 

5.5 

5.5 

5.5 

5.5 

5.70 

5.52 

5.45 

5.45 

5.40 
5.40 
5.60 
5.60 
5.50 


5.58 
5.55 
6.00 
5.50 
5.65 

5.62 
5.55 
5.60 
5.68 
5.70 

5.50 
5.55 
5.55 
5.55 
5.50 

5.60 
5.85 
5.70 
6.10 
6.15 

6.35 
5.95 
5.80 
5.65 
5.70 

6.40 

5.85 
5.95 
5.70 
5.70 
5.85 


5.65 
5.55 
5.60 
5.55 
5.50 

5.50 

5.55 
5.95 
6.30 
5.85 

5.65 
5.50 
5.50 
5.50 
5.85 

5.70 
5.60 
5.75 
5.95 
5.75 

6.25 
6.25 
5.90 
6.70 
5.65 

5.60 
5.50 
5.50 
6.05 
6.20 


6.50 


2 


6.95 


8 


7.70 


4 


6.30 


5 


5.90 


6 


5.95 


7 


5.75 


8 


5.80 


9 


5.80 


10 


5.60 


11 


5.60 


12 


5.50 


13 


5.60 


14 


5.60 


15 


5.60 


16 


5.75 


17 


5.60 


18 


5.60 


19 


6.78 


20 


6.20 




5.80 


22 


6.95 


23 


6.35 


24 


6.30 


25 


6.05 


26 


5.85 


27 


5.62 


28 


5.60 


29 


5.60 


30 


5.60 


81 


5.60 







WAINIHA CANAL AT INTAKE, NEAR WAINIHA, KAUAI. 

Location. — At 700-foot elevation, just below the point of diversion and about 4 miles 

above the Kauai Electric Co.'s power house. 
Records available. — August 1, 1910, to December 31, 1912. 
Channel. — Probably permanent. 
Cooperation. — Gage heights furnished by Kauai Electric Co. 

The following discharge measurement was made by W. V. Hardy: 
I March 20, 1912: Gage height, 4.14 feet; discharge, 80.0 second-feet. 

Daily gage height, in feet, of Wainiha canal at intake, near Wainiha, Kauai, for 1912. 

[Kauai Electric Co., observer.] 



Day. 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 



1.50 
4.10 
4.35 
4.10 



3.50 
3.50 
3.50 
4.00 
4.00 

2.50 
3.40 
3.40 
3.40 
3.50 

3.90 
3.50 
3.40 
3.40 



4.00 
4.00 
4.70 
4.70 
4.70 

4.70 
4.70 
4.70 
4.70 
4.70 

4.70 
4.70 
4.70 
4.70 
4.70 



4.70 
4.70 
4.60 
4.55 
4.70 

4.70 
4.70 
4.70 
4.70 
4.70 

4.70 
4.70 
4.70 
4.70 
4.70 



3.55 
3.55 
4.70 
4.70 
4.65 

4.15 
4.10 
4.70 
4.10 
3.85 

3.60 
3.50 
3.75 
4.70 
4.70 



4.05 
4.05 
3.70 
3.90 
3.70 

3.60 
3.45 
3.40 
4.45 
4.10 

3.60 
3.90 
4.35 
4.70 
4.50 



3.75 
3.75 
3.50 
3.75 
4.20 

4.35 
4.70 
3.90 
3.65 
4.70 

4..70 
4.70 
4.50 
4.70 
4.70 



3.65 
3.45 
3.35 
3.30 

4.20 

4.40 
4.20 
4.70 
4.70 
440 

4.60 
4.50 
4.60 
4.70 
4,70 



4.70 
4.70 
4.70 
4.70 
2.55 

4.70 
4.70 
4.70 
4.70 



3.80 
3.90 
3.65 
3.55 
3.45 



4.20 
3.70 
4.50 
3.C5 
4.15 

3.65 
4.20 
4.60 
4.40 
4.40 

4.00 
3.60 
3.40 
3.65 
3.50 



4.60 
4.05 
4.40 
4.15 
4.60 

4.40 
4.35 
4.30 
3.80 
4.70 

4.35 
4.00 
3.75 
3.55 

4.10 



4.70 
4.70 
0.00 
0.00 
0.00 

1.50 
1.50 
2.60 
4.50 
4.50 

4.10 
3.70 
3.60 
3.60 
3.90 



14694°— wsp 336—14- 



98 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, of Wainiha canal at intake near Wainiha, Kauai, for 1912 — 

Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 




3.30 
3.30 
3.30 
3.40 
3.30 

4.00 
4.00 
4.00 
4.00 
4.00 

4.00 
4.00 
4.00 
4.00 


4.70 
2.50 
2.80 
4.00 
4.00 

4.00 
4.25 
4.00 
4.50 
4.60 

4.70 
4.70 
4.70 
4.70 
4.70 
4.70 


4.70 
4.70 
4.70 
4.70 
4.60 

4.45 
4.45 
4.40 
4.20 
4.40 

4.70 
4.40 
4.50 
3.90 
3.65 
...... 


4.70 
4.50 
4.10 
3.95 
4.35 

4.40 
4.70 
4.70 
4.70 
4.65 

4.50 
4.70 
4.60 
3.50 
4.70 
4.30 


4.60 
4.00 
4.80 
4.70 
4.35 

4.70 
4.40 
4.50 
4.70 
4.25 

4.00 
4.15 
3.70 
3.45 
3.40 


4.70 
4.70 
4.50 
4.00 
3.90 

4.20 
4.50 
4.50 
4.70 
4.40 

4.30 
3.90 
3.80 
4.00 
4.40 
3.80 


4.60 
4.10 
3.80 
3.60 
3.55 

4.70 

4.50 
4.40 
4.50 
4.20 

4.20 
4.70 
4.70 
4.70 
4.70 
4.70 


4.05 
4.13 
3.50 
3.50 
3.45 

8.75 
4.10 
3.50 
3.20 
3.20 

3.20 
3.20 
3.80 
4.15 
4.10 


4.00 
4.10 
4.50 
4.70 
4.70 

4.70 

4.70 
4.70 
4.35 
4.40 

4.70 
4.70 
4.70 
4.60 
4.60 
4.70 


4.40 
3.90 
4.40 
4.70 
4.65 

4.70 
4.70 
4.70 
4.70 
4.70 

3.80 
3.65 
3.55 
4.70 
4.70 


4.10 


17 




3.50 


18 




3.40 


19 




3.40 


20 




4.70 


21 




4.50 


22 




4.70 


23 




4.70 


24 




4.70 


25 




2.00 


26 




4.70 


27 




0.00 


28 




0.00 


29 




1.60 






4.00 


31 






4.00 











Note.— Power plant was partly closed for repairs Jan. 5-31. 

MISCELLANEOUS MEASUREMENTS ON KAUAI IN 1912. 
[By W. V. Hardy.J 



Date. 



Stream. 



Gage 
height. 



Dis- 
charge. 



Jan. 27 

29 

Mar. 20 

Feb. 11 

12 

12 

12 

12 

12 

12 

Jan. 19 

20 

20 

21 

Feb. 11 

11 

11 

Apr. 4 

Dec. 13 

May 5 

July 31 

Jan. 22 

31 

Feb. 19 

19 

Aug. 21 

21 

Feb. 12 

Nov. 18 

Feb. 28 

Jan. 22 

31 

Feb. 12 

Jan. 31 

22 

Dec. 3 

Feb. 11 

11 

11 

11 

11 

July 3 

Aug. 7 

Oct. 7 



Wainiha canal at Tunnel No. 18, near Wainiha. . 

....do 

....do 

Wilcox ditch above county road near Koloa 

Huleia River below county road near Lihue 

Hakenanahu Stream above county road, Lihue. . 

Kamooloa ditch below county road, Lihue 

Hooleinakaunualihua ditch below county road. . 
Hooleinakaunualihua Stream below county road . 

Puhi Stream below county road near Lihue 

Kahiliholo Stream below stone dam. Kilauea 

Kilauea River below confluence, Kilauea. 



Waiule ditch, intake, above reservoir, Kilauea 

Kalihiwai intake ditch above reservoir, Kilauea 

Lawai Stream, west, Homestead, Kauai 

Lawai Stream, east, Lawai, Kauai 

Lawai ditch ? Lawai 

Hanapepe ditch, Hanapepe weir, Makaueli 

Manuahi Stream above Hanapepe River 

Uhau lole Stream 400 feet below falls 

North Wailua River above mouth of East Branch.. 

Kiaiakua Stream below county road, Hanalei 

Kiaiakua ditch below county road, Hanalei 

Kalihiwai River, 1J miles above mouth 

West Branch Kalihiwai just above confluence 

Kalihiwai River below Kaapua Falls 

Kalihiwai River above Kaapua Falls 

Halehaku Stream below county road, Lihue 

North Fork Halekua Stream trail crossing, Waimea. 

East Branch Kapaia Stream below county road 

Kaua ditch below county road, Hanalei 

Moloaa Stream below county road, Kilauea 

Nawiliwili Stream above county road, Lihue 

Papaa Stream above county road, Kilauea 

Poakumu Stream above county road, Kilauea 

Waimea River at bridge at Waimea 

Omuu Stream above old county road, Koloa 

Eleele ditch above county road, Eleeie 

Poeloelo Stream above old county road, Koloa 

Waihohonu Stream below old county road, Koloa. . . 

Wahiaua Stream below county road, Eleele 

Kauaikanana Stream near Waimea 

do 

....do 



Feet. 
3.40 
3.70 
4.14 



HI 



Sec-feet. 

67.3 

77.4 

91.4 

6.07 

2.11 

.20 

8.33 

3.72 

1.77 

.75 

9.20 

8.83 

3.85 

1.17 

1.64 

.10 

.26 

4.07 

3.43 

4.79 

15.00 

.28 

1.06 

21.3 

1.84 

638.4 

628.3 

1.96 

.69 

1.81 

1.27 

2.11 

1.46 

.75 

1.27 

9,780.00 

.27 

2.25 

.08 

.13 



.50 



a Head in inches on 12-foot sharp-crested weir. 



6 River fluctuating. 



ISLAND OF KAUAI. 



99 



PUMPED WATER ON KAUAI. 

Several small pumping plants on Kauai are used to pump under- 
ground water for irrigation at very dry times or to lift fresh, water 
to higher elevations. At only one place, however, is pumped water 
from underground sources depended upon as a regular irrigation 
supply. 

The McBryde Sugar Co. has five electric plants with seven pumps 
and two steam plants with two pumps which are used for pumping 
underground water from Hanapepe and Lawai valleys. 

During 1912 the quantity of water pumped daily by this company 
averaged 25,600,000 gallons, or 39.6 second-feet. A large part of 
this water is lifted more than 400 feet. 

DITCH SEEPAGE AND LOSSES ON KAUAI. 

The following investigations of ditch seepage and losses have been 
made during the year at the request of plantation and power company 

officials: 

Ditch and canal loss or gain, 1912. 

Wainiha canal (Kauai Electric Co.). 



Date and hour. 



Jan. 27: 

9 a. m 

10 a. m 

11 a. m 

11.40 a.m. . 

Jan. 29: 

11.10 a. m.. 

Noon 

3.15 p.m... 
4.15 p.m... 



Location. 



6,000 feet below intake 

6,225 feet below intake 

6,490 feet below intake 

6,815 feet below intake 

7,115 feet below intake 

7,440 feet below intake 

4,500 feet above forebay 

3,865 feet above forebay 

Stone Dam ditch (near Kilauea). 

450 feet below intake at Stone Dam 
Added to above by inflow from mill supply ditch 3,500 feet 
below Stone Dam intake. 

Total 
At bridge 5,500 feet below Stone Dam intake 

Waiuli ditch (near Kilauea). 

300 feet below reservoir 

Discharge of lateral ditch diverting at point 4,500 feet below 
reservoir. 

Without loss or gain there should be remaining in ditch below 

diversior. 
Discharge at wasteway 

Without loss or gain there should be remaining in ditch below 
wasteway. 

Below wasteway at point about 16,000 feet below reservoir 

At bridge on Kilauea-Kolako road 



Discharge. 



Second-feet. 
67.3 
66.6 
64.3 
63.2 



60.2 
77.4 
75.8 



Loss or 
gain. 



Second-feet. 

-0.7 
-2.3 
-1.1 



-2.4 
-1.6 



Jan. 19: 

2.45 p.m... 
4p.m 



4.45 p.m. 



Jan. 20: 
lp.m... 
2 p.m... 

2.30 p. m 

3p.m... 
4p.m... 



12.1 
4.2 



7.9 
0.7 



7.2 



8.4 
6.6 



+1.2 

-1.8 



100 



Ditch and canal loss or gain, 1912 — Continued. 
WaluU Intake ditch (near Kilauea). 



Date and hour. 



Location. 



Discharge. 



Loss or 
gain. 



Jan. 21: 
8 a.m. 



9.30 a.m... 



60 feet below headgate 

Surface drainage into ditch between points of measurements . 

Total 

About 7,000 feet below headgate 



Second-feet. 

3.7 

.2 



3.6 



Second-feet. 



-0.3 



Hanapepe ditch (near Eleele). 



Mar. 6: 

10 a. m 


Flume No. 6, J mile below intake 


43.6 
.6 






Surface drainage added to canal between flumes No. 6 and 
No. 25. 

Total 






44.2 
39.4 

44.1 
42.1 






Flume No. 25, 3| miles below intake 


—4.8 


Mar. 7: 

4p.m 

4.50 p.m... 


Flume No. 35 




"Flump. Nn. Sfi, 9.p(\() fp.p.t hp.lnw flump. Nn. 35 . . 


—2.0 







Note. — These measurements were made to determine leakage at flume No. 36. 

ISLAND OF OAHTJ. 

PALOLO STREAM BASIN. 
WAIOMAO STREAM AT 900-FOOT ELEVATION * NEAR HONOLULU, OAHTL 

Location. — About 3 miles above Pukele in the Palolo Valley and about 9 miles from 
Honolulu. 

Records available.— October 10, 1911, to December 31, 1912. 

Gage. — Watson weekly clock register above 3-foot sharp-crested weir; datum uncer- 
tain on account of leaks under weir. 

Channel. — One channel at all stages; shifting. 

Discharge measurements. — By wading. 

Diversions. — None above station; proposed to divert all of low-water discharge by 
pipe line for Honolulu water supply in 1913. 

Accuracy. — Records poor, owing to uncertainty regarding leakage around and under 
the weir. 

Discharge measurements of Waiomao Stream at 900-foot elevation, near Honolulu, Oahu, 

in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


May 15 
21 
21 
21 
21 


Pierce and Hardy. . 

W.V.Hardy 

do 

do 

do 


Feet. 
0.01 
.34 
.30 
.25 
.20 


Sec.-ft. 
0.39 
2.87 
2.70 
2.09 
1.64 


June 17 
July 29 
Oct. 4 
Nov. 25 
Dec. 20 


W. B. Hardy 

C. H. Pierce 

G. K. Larrison 

Larrison and Dort. . 
G. K. Larrison 


Feet. 
0.11 
.07 
.07 
.22 
.24 


Sec.-ft. 

0.82 

.44 

a. 42 

61.42 

1.38 



a Discharge of stream proper, 0.37 second-foot; small diversion immediately above station estimated 
at 0.05; total discharge 0.42. 
b Small loss through rocks at edge of measuring section. 



1 950-foot elevation in Water-Supply Paper 318, p. 149. 



ISLAND OF OAHU. 



101 



Daily gage height, in feet, of Waiomao Stream at 900-foot elevation, near Honolulu, Oahu, 

for 1912. 
[Ramon Suvaco, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.30 






0.12 
.10 
.10 
.13 

.18 

.12 
.11 
.10 
.14 
.16 

.24 
.18 
.17 
.16 
.23 

.24 
.17 
.13 
.12 
.11 

.12 
.11 
.10 

.09 
.09 

.07 
.07 
.06 
.06 
.05 


0.05 
.05 
.05 
.05 
.10 

.10 
.10 
.09 
.09 
.09 

.08 
.09 
.10 
.13 
.12 

.12 
.12 
.12 
.15 
.10 

.17 
.14 
.11 
.32 
.16 

.25 
.50 
.35 
.24 
.19 
.16 


0.14 
.14 
.12 
.25 

.18 

.14 
.14 
.13 
.13 

.12 
.11 
.12 
.11 
.10 

.09 
.09 
.09 
.09 
.09 

.09 
.09 
.09 
.09 
.09 


0.08 
.08 
.08 
.08 
.12 

.11 
.10 
.11 
.32 

.55 

.35 
.24 
.22 
.19 

.18 

.19 
.18 
.15 
.14 
.13 

.12 
.12 
.11 
.10 
.10 

.09 
.08 
.08 
.07 
.07 
.07 


0.07 
.10 
.22 
.32 
.20 

.25 
.14 
.11 
.23 
.22 

.50 
.27 
.19 
.12 
.12 

.12 
.11 
.10 
.09 

.08 

.23 
.30 
.19 
.16 
.23 
.19 


0.14 
.13 
.11 
.10 
.10 

.10 
.10 
.09 
.08 
.08 

.07 
.07 
.06 
.08 
.06 

.06 
.06 
.06 
.06 
.06 

.06 
.06 
.06 
.06 
.06 

.07 
.08 
.09 
.09 
.10 


0.09 
.08 
.08 
.08 
.07 

.06 
""."itf" 

""io" 

.09 
.13 
.10 
.08 
.26 

.58 
.33 
.27 
.19 
.15 
.14 


0.11 
.09 
.07 
.08 
.07 

.06 
.06 
.13 
.18 
.10 

.08 
.07 
.06 
.06 
.30 

.12 
.10 
.09 
.09 
.08 

.27 
.28 
.37 
.22 
.19 

.15 
.14 
.48 
.50 

.42 


0.62 


2 






.49 


3 






0.14 
.13 
.12 


.85 


4 






.45 


5 






.30 


6 






.25 


7 








.29 


8 








.30 


9 


.17 
.17 

.15 
.14 
.26 
.35 


0.10 
.14 

.16 
.12 
.15 
.11 
.10 

.10 

'.09 

.09 

.14 

.90 

.57 
.34 


""76" 

.88 
.52 
.68 
.42 
.28 

.44 

.26 
.22 
.19 

.17 
.14 
.12 
.11 
.13 

.11 

.10 

.11 
.10 


.26 


10 


.18 


11 


.14 


12 . 


.12 


13 


.18 


14 


.12 


15 


.12 


16 




.10 






.09 


18 




.12 






.40 


20 




.25 


21 


.12 


.23 




.24 


23 




.18 


24 




.15 


25 




.13 


26 




.12 








.09 


28 






.09 








.08 


30 






.09 








.10 











Discharge, in second-feet, of Waiomao Stream at 900-foot elevation, near Honolulu, Oahu. 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.64 






0.50 
.40 
.40 
.55 

.85 

.50 
.45 
.40 
.60 
.75 

1.17 
.76 
.70 
.64 

1.10 

1.17 

.80 
.55 
.50 

.45 

.50 
.45 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 


0.40 
.40 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 

.40 
.40 
.40 
.55 
.50 

.50 
.50 
.50 
.65 
.66 

1.29 

1.02 

.75 

2.84 

. 1.20 

2.09 
4.88 
3.17 
1.99 
1.49 
1.20 


1.02 
1.02 
.84 
2.09 
1.39 

1.02 
1.02 
.93 
.93 
.93 

.93 
.93 

.84 
.84 

.84 

.84 
.75 
.84 
.75 
.66 

.58 
.58 
.58 
.58 
.58 

.58 
.58 
.58 
.58 
.58 


0.50 
.50 
.50 
.50 

.84 

.75 
.66 
.75 

2.84 
5.48 

3.17 

1.99 
1.79 
1.49 
1.39 

1.49 
1.39 
1.11 
1.02 
.93 

.84 
.84 
.75 
.66 
.66 

.58 
.50 
.50 
.43 
.43 
.43 


0.43 

.66 

. 1.79 

2.84 

1.59 

1.69 
1.79 
1.89 
1.99 
1.99 

2.09 
1.02 
.75 
1.89 
1.79 

4.88 
2.29 
1.49 

.84 
.84 

.84 
.75 
.66 
.58 
.50 

1.89 
2.62 
1.49 
1.20 
1.89 
1.49 


1.02 
.93 
.75 
.66 
.66 

.66 
.66 
.58 
.50 
.50 

.43 
.43 
.36 
.36 
.36 

.36 
.36 
.36 
.36 
.36 

.36 
.36 
.36 
.36 
.36 

.43 
.50 

.58 
.58 
.66 


0.58 
.50 
.50 
.50 
.43 

.36 
.50 
.66 

.84 
1.02 

1.20 
1.39 
1.49 
1.39 
.93 

.50 
.50 
.50 
.66 
.66 

.58 
.93 
.66 
.50 
2.19 

5.84 
2.93 
2.29 
1.47 
1.09 
.96 


0.70 

.54 
.40 
.45 
.35 

.35 
.35 

.77 

1.23 

.53 

.40 
.40 
.40 
.40 
2.39 

.64 
.49 
.41 
.41 
.40 

1.99 
2.09 
3.07 
1.39 
1.11 

.75 

.67 

4.16 

4.40 

3.47 


5 50 


2 






4 28 


3 






0.52 

.47 
.42 


8 20 


4 






3 72 


5 






2.14 


6 






1 57 


7 








1 98 


8 








-2.08 


9 


.70 

.70 

.58 

.52 

1.32 

2.07 


0.40 
.40 

.42 
.42 
.44 
.44 
.46 

.46 
.48 
.48 
.50 
.50 

.52 

.76 

8.53 

4.30 

1.98 


""6*62" 

8.25 
3.75 
5.60 
2.72 
1.48 

2.92 
2.07 
1.32 
1.03 
.90 

.80 
.60 
.50 
.45 
.55 

.45 
.40 
.40 
.45 
.45 
.40 


2.67 


10 


.89 


11 


.56 


12 


.41 


13 


.89 


14 


.41 


15 


.41 


16 




.35 


17 




.35 


18 




.41 


19 




3 10 


20 




1.51 


21 


.42 


1.28 


22 


1.38 


23 




.82 


24 




.58 


25 




.43 


26 




.35 


27 






.35 


28 






.35 


29 






.35 


30 






.35 


31 






.35 











102 WATER RESOURCES OF HAWAII, 1912. 

Monthly discharge of Waiomao Stream at 900-foot elevation near Honolulu, Oahu,for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


January 






aO.99 

6 1.26 

cl.74 

.58 

1.00 

.84 

1.15 

1.56 

.51 

1.11 

1.17 

1.52 


a 15. 7 
642.5 
C86.2 
34.5 
61.5 
50.0 
70.7 
95.9 
30.3 
68.2 
69.6 
93.5 


D. 


February 






D. 


March 






D. 


April 


1.17 

4.88 
2.09 
5.48 
4.88 
1.02 
5,84 
4.40 
5.50 


0.40 
.40 
.58 
.43 
.43 
.36 
.36 
.35 
.35 


D. 


May 


D. 


June 


C. 


July 


B. 


August 


C. 




C. 


October 


D. 


November 


D. 


December 


D. 






The period . . . .' 






d\.l2 


d719 













aEight days. 

6 Seventeen days. 



c Twenty-five days. 

)hv " 



d Three hundred twenty-five days. 
WAIOMAO STREAM ABOVE PUKELE STREAM, NEAR HONOLULU, OAHU. 

Location. — At Pukele highway bridge in Palolo Valley, about 6 miles east of Hono- 
lulu. 

Records available. — April 8 to December 29, 1911, and May 15 to December 31, 
1912. 

Drainage area. — Not measured. 

Gage. — Vertical staff; read once daily, about 9 a.m.; datum unchanged. 

Channel. — One channel at all stages; shifting. 

Discharge measurements. — Low and medium stage measurements made by 
wading; flood measurements made from bridge. 

Diversions. — None above station. 

Accuracy. — Records poor. 

Discharge measurements of Waiomao Stream above Pukele Stream, near Honolulu, Oahu> 

in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


May 15 

21 

June 17 


Pierce and Hardy. . 

W.V.Hardy 

do 

C.H.Pierce 

G. K. Larrison 


Feet. 
0.74 
.93 

.82 
.88 
.82 


Sec.-ft. 

0.19 

1.01 

.27 

.32 

.10 


Oct. 15 

Nov. 26 

Dec. 20 


G. K. Larrison 

Larrison, Dort and 
Bailey 


Feet. 
0.95 

1.03 
1.13 


Sec.-ft. 
0.42 

.81 


July 28 
Sept. 17 


G. K. Larrison 


1.37 



Daily gage height, in feet, of Waiomao Stream above Pukele Stream, near Honolulu, 

Oahu, for 1912. 



Day. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.85 
.83 
.82 
.81 
.80 

.84 
.82 
.81 
.80 
.81 


0.87 
.85 
.88 
.87 
.86 

.87 
.89 
.96 
.96 
1.20 


0.98 
.98 
.96 
.95 
.94 

'.93 
.92 
.92 
.92 
.91 


0.85 
.85 
.85 
.87 
.81 

.85 
.86 
.86 
.90 
.88 


0.98 
.90 
.92 
.90 
.90 

.91 
.92 
.99 
.98 
.98 


0.98 
.96 
.91 
.91 
.91 

.91 
.91 
.92 
.92 
1.00 


1.52 


2 




1.35 


3 




1.23 


4 




1.18 


5 




1.16 


6 




1.13 


7 




1.11 


8 




1.09 


9 




1.09 


10 




1.09 



ISLAND OF OAHU. 



103 



Daily gage height, in feet, of Waiomao Stream above Pukele Stream, near Honolulu, 

Oahu, for 1912 — Continued. 



Day. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


11 




0.83 

.82 
.80 
.80 
.81 

.81 
.80 
.89 
.81 
.80 

.79 
.79 
.79 

.83 
.86 

.84 
.86 
.86 
.84 
.83 


1.10 
1.00 
.96 
.99 
1.00 

1.00 
1.00 
1.00 
.99 
.99 

.99 
.99 
.98 
.98 
.98 

.98 
.97 
.96 
.95 
.93 
.90 


0.98 
.94 
.92 
.92 
.91 

.95 
1.13 
1.00 
.95 
.95 

.95 
.95 
.93 

.88 
.82 

.81 
1.01 

.93 

.97 
1.20 

.91 


0.86 
.86 
.83 
.85 

.87 

.87 
.86 
.86 
.86 
.86 

.87 
.88 
.87 
.86 
.82 

.81 
.85 
.90 
.92 
1.02 


1.03 
1.00 
1.04 
1.02 
.97 

.90 
.90 
.90 
.95 
.98 

.98 
.96 
.95 
.95 
1.12 

1.06 
1.06 
1.08 
1.06 
1.04 
1.00 


0.98 
.95 
.93 
.92 
.98 

2.13 

1.05 

.98 

.95 

.98 

1.00 
1.03 
1.00 
1.08 
1.07 

1.05 
1.03 
1.00 
1.36 
1.29 


1.09 


12 




1.09 


13 




1.09 


14 




1.09 


15 


0.74 

.71 
.71 
.70 
.79 

.82 

.82 
.83 

.85 

1.18 

2.00 

1.50 
1.20 


1.09 


16 


1.09 


17 


1.08 


18 


1.12 


19 


1.15 


20 


1.13 


21 


1.11 


22 '. 


1.00 


23 


1.09 




1.08 


25 


1.07 


26 


1.06 




1.05 


28 


1.05 




1.05 


30 


1.05 




1.05 







Discharge, in second-feet, of Waiomao Stream above Pukele Stream, near Honolulu, Oahu, 

for 1912. 



Day. 


May f 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.48 

.37 

- .31 

.26 

.20 

.43 
.31 
.26 
.20 
.26 

.37 
.31 
.20 
.20 
.26 

.26 
.18 
.66 
.21 
.18 

.13 
.13 
.13 
.31 
.45 

.33 
.45 
.45 
.33 
.28 


0.50 
.38 
.51 
.45 
.40 

.45 

.57 

1.04 

1.04 

4.20 

2.42 
1.30 
.96 
1.20 
1.30 

1.30 
1.30 
1.30 
1.12 
1.12 

1.12 
1.12 
1.05 
1.05 
1.05 

1.05 
.97 
.90 
.77 
.63 
.45 


1.00 
1.00 

.84 
.77 
.70 

.63 
.57 
.57 
.57 

.45 

1.00 
.70 
.57 
.57 
.51 

.77 
2.60 
1.16 

.77 

.77 

.77 
.77 
.63 
.35 
.10 

.09 
1.24 

.63 

.92 
3.70 

.51 


0.20 
.20 
.20 
.30 
.09 

.20 
.25 
.25 
.45 
.35 

.25 
.25 
.12 
.20 
.30 

.30 
.20 
.20 
.20 
.20 

.26 
.30 
.22 
.18 
.09 

.08 
.13 
.37 
.41 
1.08 


0.80 
.31 
.41 
.31 

.27 

.30 
.37 
.79 
.72 
.72 

1.02 
.81 

1.11 
.95 
.61 

.13 
.13 
.13 
.36 
.53 

.53 
.42 
.36 
.36 
1.67 

1.10 
1.10 
1.28 
1.10 
.94 
.67 


0.53 
.42 
.17 
.17 
.17 

.21 
.21 
.26 
.26 
.72 

.59 
.40 
.30 
.26 
.59 

28.00 
1.10 
.59 
.40 
.59 

.72 
.93 
.72 
1.36 
1.28 

1.10 

.79 

.58 

5.30 

3.90 


8.90 


2 




5.00 


3 




2.90 


4 




2.21 


5 




1.88 


6 




1.56 


7 




1.39 


8 




1.21 


9 




1.21 


10 




1.21 


11 




1.21 


12 




1.21 


13 




1.11 


14 




1.11 


15 


0.19 

.11 
.11 
.10 
.33 

.44 

.37 
.37 
.48 
1.62 
3.81 

4.34 

4.52 

24.90 

24.40 

11.90 

4.70 


1.11 


16..... 


1.11 


17.... 


1.06 


18 


1.30 


19 


1 70 


20 


1.50 


21 


1 21 


22 


41 


23 


1 04 


24 


.96 


25 


,89 


26 


81 


27 


.74 


28 ... 


.74 


29 


74 


30 


.74 


31 


.74 





104 



WATER RESOUBCES OF HAWAII, 1912. 



Monthly discharge of Waiomao Stream above Puhele Stream, near Honolulu, Oahu, 

for 1912. 



Month. 


Discharge in second 


-feet. 


Eun-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


May 15-31 


24.9 
.66 
4.20 
3.70 
1.08 
1.67 
28. 
8.90 


0.10 
.13 

.38 
.09 
.08 
.13 
.17 
.41 


5.16 
.30 

1.07 
.85 
.26 
.66 

1.75 

1.58 


164.0 
17.8 
65.8 
52.3 
15.5 
40.6 

104.0 
97.2 


D. 


June 


D. 


July 


D. 




C. 


September 


D. 


October 


D. 




D. 


December 


D. 






The period 


28.0 


.08 


1.22 


557.0 









PUKELE STREAM AT MAHOE SPRINGS, NEAR HONOLULU, OAHTT. 

Location. — About 500 feet above Pukele in upper Palolo Valley and about 6$ miles 
northeast of Honolulu. 

Records available. — April 16 to December 31, 1912. 

Gage. — Staff; read once daily, about 10 a. m. 

Channel. — One channel at all stages; shifting. 

Discharge measurements. — Made by wading. 

Diversions. — None above station; two small irrigation ditches divert water imme- 
diately below the station. 

Accuracy. — Records poor. 

Discharge measurements of Puhele Stream at Mahoe Springs, near Honolulu, Oahu, in 

1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Apr. 16 

May 15 

15 


C. H. Pierce ,-- 


Feet. 
0.73 
.62 
.62 
.61 
.60 
.59 


Sec.-ft. 
1.14 
.55 
.45 
.40 
.40 
.44 


July 29 
Sept. 19 
Oct. 15 
Nov. 26 

Dec. 24 


C. H. Pierce 

G. K. Larrison 

do 

Larrison, Dort and 
Bailey 


Feet. 
0.56 
.57 
.64 

.79 

.78 


Sec.-ft. 
0.37 


do 

W. V.Hardy... 




. .31 
.36 


21 


do 






21 


do 

do 




.87 


June 17 


G. K. Larrison 


.92 



Daily gage height, in feet, of Puhele Stream at Mahoe Springs, near Honolulu, Oahu, for 

1912. 







[Sam Zepano, observer.J 










Day. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.68 
.68 
.67 
.66 
.66 

.66 
.65 
.65 
.65 
.64 

.64 
.64 
.64 
.63 
.62 

.62 
.61 
.61 
.60 
.61 


0.76 

.75 
.74 
.73 
.75 

.73 
.70 
.68 
.65 
.64 

.63 
.62 
.61 
.60 
.60 

.59 
.59 
.59 
.58 
.57 


0.56 
.56 
.56 
.56 
.56 

.56 
.56 
.57 
.57 
.95 

.69 
.67 
.63 
.62 
.60 

.60 
.59 
.60 
.60 
.60 


0.58 
.58 
.58 
.60 
.59 

.62 
.62 
.61 
.61 
.60 

.60 
.59 
.59 
.86 
.73 

'.68 
.57 
.59 
.61 
.60 


0.45 
.45 
.45 
.47 
.47 

.48 
.63 
.63 
.62 
.61 

.60 
.59 
.58 
.53 
.50 

.48 
.60 
.60 
.60 
.63 


0.52 
.50 

.58 
.57 
.57 

.59 
.59 
.60 
.60 
.60 

.80 

***"."66" 
.66 
.66 

.60 
.60 
.59 
.58 
.65 


0.70 
.70 
.71 
.71 
.71 

.71 

.71 
.72 
.72 
.71 

.70 

!69 
.75 

.83 
.79 
.75 
.70 

.78 


1.28 


2 




1.12 


3 




1.03 


4 




1.03 


5 




1.02 


6 




1.00 


7 




.98 


8 




.90 


9 




.90 


10 




.90 


11 




.90 


12 




.90 


13 




.89 


14 




.89 


15 




.89 


16 


0.73 
.73 
.74 
.73 
.73 


.88 


17 


.88 


18 


.87 


19 


.83 


20 


.80 



ISLAND OF OAHTJ. 



105 



Daily gage height, in feet, of Pukele Stream at Mahoe Springs, near Honolulu, Oahu,for 

1912— Continued. 



Day. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


21 


0.73 
.73 
.73 
.73 
.73 

.72 
.71 
.70 
.69 
.68 


0.69 
.69 

!70 

.85 

.89 
1.11 
1.15 
1.13 
1.00 

.98 


0.57 

.57 
.57 
.57 
.57 

.56 
.56 
.56 

.56 
.56 


0.60 
.60 
.60 
.60 
.60 

.59 
.58 
.57 
.60 
.60 
.60 


0.61 
.60 
.68 
.62 
.61 

.60 

.78 
.68 
.57 
.50 
.49 


0.65 
.68 
.66 
.65 
.68 

.70 
*"*.*65" 


0.65 
.66 
.68 
.67 
.80 

.78 
.80 
.79 
.75 
.73 
.70 


0.82 

1.01 

.95 

.88 
.83 

.80 
.80 
.83 

.89 
1.00 


0.79 


22 


.79 


23 


.78 


24 


.77 


25 


.76 


26 


.75 


27 


.74 


28 


.74 


29... 


.74 


30 


.75 


31 


.75 









Daily discharge, in second-feet, of Pukele Stream at Mahoe Springs, near Honolulu, Oahu, 

for 1912. 



Day. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.8 
.8 
.7 
.6 
.6 

.6 
.6 
.6 
.6 
.5 

.5 
.5 
.5 
.5 
.4 

.4 
.4 
.4 
.4 
.4 

.8 
.8 
.8 
.9 
2.6 

3.2 
6.5 
7.1 
7.3 
5.4 
5.0 


1.8 
1.7 
1.6 
1.4 
1.7 

1.4 
1.1 
1.0 

.7 
.7 

.6 
.6 
.5 
.5 
.5 

' .4 
.4 
.4 
.4 
.4 

.4 
.4 
.4 
.4 
.4 

.4 
.4 
.4 
.4 
.4 


0.4 
.4 
.4 
.4 
.4 

.4 
.4 
.4 
.4 
4.6 

1.0 
.9 
.6 
.6 
.5 

.5 
.4 
.5 
.5 
.5 

.5 
.5 
.5 
.5 
.5 

.4 

.4 
.4 
.5 
.5 
.5 


0.4 
.4 
.4 
.5 
.4 

.6 
.6 
.5 
.5 
.5 

.5 

.4 

.4 

3.1 

1.4 

1.0 
.4 
.4 
.5 
.4 

.5 
.4 
.9 
.5 
.5 

.4 
1.8 
.8 
.4 
.3 
.3 


0.3 
.3 
.3 
.3 
.3 

.3 
.5 
.5 
.5 

.4 

.4 
.4 
.3 
.3 
.3 

.3 

.4 
.4 
.4 
.5 

.6 

.7 
.6 
.5 

.7 

.8 
.7 
.6 
.6 
.5 


0.3 
.3 
.3 
.3 
.3 

.3 
.3 
.3 
.3 
.3 

.4 
.8 
.4 
.4 
.4 

.3 
.3 
.3 
.3 

.4 

.4 
.4 
.5 
.4 
1.2 

1.0 
1.2 
1.1 

.8 
.7 
.5 


0.5 
.5 
.6 
.6 
.5 

.5 
.5 
.6 
.6 
.6 

.5 

.4 
.4 
.4 
.7 

1.3 
.9 

.7 
.4 
.9 

1.0 
3.5 

2.7 
2.0 
1.1 

1.0 
1.0 
1.3 
2.0 
3.7 


8.0 


2 




5.6 


3 




4.2 


4 




4.2 


5 




3.8 


6 




3.8 


7 




3.4 


8 




2.2 


9 




2.2 


10 




2.2 


11 




2.2 


12 




2.2 


13 




2.1 


14 




2.1 


15 




2.1 


16 


1.2 
1.2 
1.2 
1.2 
1.2 

1.2 
1.2 

1.2 
1.2 
1.2 

1.1 

1.0 

.9 

.8 
.8 


1.9 


17 


1.9 


18 


1.8 


19 


1.4 


20 


1.1 


21 


1.0 


22 


1.0 


23 


.9 


24 


.8 


25 


.8 


26 


.7 


27 


.6 


28... 


6 


29 


6 


30 


7 


31 


7 









Monthly discharge of Pukele Stream at Mahoe Springs, near Honolulu, Oahu, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. 



Minimum. 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



April 16-30...... 

May 

June 

July 

August 

September 

October 

November 

mber 

The period 



1.2 
7.3 
1.8 
4.6 
3.1 
.8 
1.2 
3.7 
8.0 



0.8 
.4 
.4 
.4 
.3 
.3 
.3 
.4 



1.11 

1.65 

.73 

.63 

.65 



1.05 
2.16 



8.0 



66.0 
101.0 
43.4 
38.7 
40.0 
27.4 
30.1 
62.5 
133.0 



542.0 



106 



WATER RESOURCES OF HAWAII, 1912. 



MANOA STREAM BASIN. 
MANOA STREAM AT UPPER END OF VALLEY NEAR HONOLULU, OAHU. 

Location. — Below confluence of two main branches in upper Manoa Valley, about 5 

miles east of Honolulu. 
Records available. — November 7, 1910, to December 31, 1912. 
Gage. — Vertical staff; read twice daily, about 6 a. m. and 5 p. m. 
Channel. — One channel at all stages; shifting. 
Discharge measurements. — By wading at low and medium stages up to a gage 

height about 4 feet; above this stage from footbridge at gage. 
Diversions. — Several small irrigation ditches divert from the branches of the stream 

above the station. 
Accuracy. — Records poor. 

Discharge measurements of Manoa Stream at upper end of valley, near Honolulu, Oahu, 

in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


1912. 
Jan. 12 


H. R. Schulz 


Feet. 
2.73 
2.87 
3.24 
3.32 


Sec.-ft. 
1.95 


Sept. 17 
Oct. 30 


G. K. Larrison 


1.43 


Larrison and Dort 


5.19 


Dec. 20 


G. K. Larrison 


7.89 









Daily gage height, in feet, of Manoa Stream at upper end of valley, near Honolulu, Oahu, 

for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Not. 


2.70 


2.52 


2.72 


2.68 


2.70 


2.70 


2.70 


2.65 


2.60 


2.80 


3.10 


2.70 


2.52 


2.75 


2.68 


2.70 


2.70 


2.70 


2.75 


2.60 


2.80 


3.00 


2.70 


2.55 


2.65 


2.65 


2.70 


2.70 


2.70 


2.75 


2.60 


2.85 


3.00 


2.65 


2.55 


2.60 


2.70 


2.70 


2.75 


2.70 


2.75 


2.70 


2.82 


3.05 


2.65 


2.55 


2.60 


2.75 


2.75 


2.70 


2.70 


2.80 


2.80 


2.80 


3.05 


2.68 


2.55 


2.60 


2.80 


2.65 


2.68 


2.70 


2.80 


2.80 


2.80 


3.00 


2.70 


2.58 


2.60 


2.95 


2.60 


2.65 


2.70 


2.80 


2.85 


2.62 


3.05 


2.85 


2.60 


2. 70 


3.00 


2.60 


2.70 


2.70 


2.80 


2.80 


2.60 


3.10 


2.70 


2.55 


3.10 


3.05 


2.60 


2.66 


3.15 


2.80 


2.80 


2.95 


3.35 


2.70 


2.62 


3.30 


2.90 


2.60 


2.65 


3.30 


2.60 


2.80 


2.82 


3.00 


2.70 


2.55 


3.90 


2.80 


2.60 


2.65 


3.00 


3.15 


2.80 


2.95 


3.00 


2.60 


2.55 


3.45 


2.75 


2.60 


2.65 


2.80 


2.60 


2.80 


3.15 


3.00 


2.60 


2.55 


3.50 


2.90 


2.60 


2.68 


2.80 


2.80 


2.80 


3.05 


3.00 


2.70 


2.55 


3.15 


2.80 


2.65 


2.68 


3.85 


2.80 


2.80 


3.10 


2.98 


2.65 


2.55 


3.00 


2.90 


2.60 


2.68 


2.70 


2.70 


2.80 


3.00 


3.08 


2.60 


2.55 


2.95 


3.40 


2.60 


2.65 


2.70 


3.55 


2.80 


2.80 


3.05 


2.60 


2.55 


2.90 


3.15 


2.60 


2.68 


2.75 


2.70 


2.85 


2.60 


2.98 


2.60 


2.55 


2.85 


3.02 


2.60 


2.70 


2.70 


2.80 


2.80 


2.60 


3.00 


2.60 


2.55 


2.80 


2.90 


2.60 


2.70 


2.70 


2.80 


2.80 


2.60 


3.00 


2.60 


2.55 


2.80 


2.85 


2.60 


2.65 


2.70 


2.80 


2.80 


2.80 


3.00 


2.60 


2.70 


2.80 


2.80 


2.65 


2.65 


2.70 


2.80 


2.80 


2.60 


3.90 


2.60 


2.60 


2.80 


2.80 


2.60 


2.65 


2.70 


2.80 


2.80 


3.20 


3.45 


2.60 


3.60 


2.80 


2.80 


2.60 


2.65 


2.70 


2.80 


2.80 


3.00 


3.25 


2.60 


3.10 


2.70 


2.78 


3.00 


2.65 


2.70 


2.80 


2.80 


3.00 


3.20 


2.60 


3.00 


2.80 


2.75 


2.75 


2.65 


2.70 


2.80 


2.80 


3.10 


3.15 


2.55 


2.85 


2.70 


2.72 


2.95 


2.65 


2.65 


3.25 


2.80 


3.80 


3.00 


2.54 


2.80 


2.70 


2.70 


3.40 


2.65 


2.65 


3.20 


2.80 


3.50 


3.00 


2.55 


2.70 


2.70 


2.70 


3.10 


2.72 


2.65 


3.00 


2.80 


3.40 


3.20 


2.52 


2.70 


2.70 


2.70 


2.80 


2.72 


2.70 


2.60 


2.80 


3.10 


3.45 


2.50 




2.70 


2.70 


2.80 


2.70 


2.70 


3.20 


2.80 


3.10 


3.10 


2.52 




2.70 




2.75 




2.70 


3.00 




3.15 





Dec. 



1 

2 
3. 

4, 
5 

6 

7, 
8. 
9 
10. 

11 
12 
13 
14 
15 

16 
17 

18 
19 
20 

21 
22 
23 
24 
25 

26 
27 
28 
29 
30 



3.80 
4.65 
3.45 
3.35 

3.25 
3.30 
3.30 
3.30 
3.25 

3.20 
3.10 
3.10 
3.10 
3.10 

3.10 
3.50 
3.50 
3.45 
3.30 

3.35 
3.30 
3.30 
3.30 
3.10 

3.05 
3.00 
3.00 
3.00 
3.00 
3.00 



ISLAND OF OAHU. 



107 



Daily discharge, in second-feet, of Manoa Stream at upper end of valley, near Honolulu , 

Oahu, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.8 
1.8 
1.8 
1.5 
1.5 

1.7 
1.8 
3.0 
1.8 
1.8 

1.8 
1.2 
1.2 
1.8 
1.5 

1.2 
1.2 
1.2 
1.2 
1.2 

1.2 
1.2 
1.2 
1.2 
1.2 

1.0 

.9 

1.0 

.8 
.7 
.8 


0.6 
.6 

.8 
.8 
.8 

.8 
.9 

1.0 
.8 

1.1 

.8 
.8 
.8 
.8 
.8 

.8 
.8 
.8 
.8 
.8 

1.5 
1.0 
13.2 
5.2 
4.0 

2.6 
2.2 
1.5 
1.5 


1.5 
1.7 
1.2 

.8 
.8 

.8 

.8 

1.4 

4.2 

6.7 

19.0 
10.0 
11.0 
4.8 
3.8 

3.3 
2.8 
2.4 
2.1 
2.1 

2.1 
2.1 
2.1 
1.4 
2.1 

1.4 
1.4 
1.4 
1.4 
1.4 
1.4 


1.2 
1.2 
1.0 
1.3 

1.6 

1.8 
3.1 
3.5 
4.0 
2.6 

1.8 
1.6 
2.6 
1.8 
2.6 

8.9 
5.3 
3.7 
2.6 
2.2 

1.8 
1.8 
1.8 
1.7 
1.6 

1.4 
1.3 
1.3 
1.3 
1.3 


1.2 
1.2 
1.2 
1.2 
1.4 

.9 

.7 
.7 
.7 
.7 

.7 
.7 
.7 
.9 
.7 

.7 
.7 
.7 
.7 
.7 

.9 

.7 

.7 

3.3 

1.4 

2.8 
8.5 
4.3 
1.7 
1.7 
1.4 


1.0 
1.0 
1.0 
1.3 
1.0 

.9 
.8 
1.0 
.8 
.8 

.8 
.8 
.9 
.9 
.9 

.8 

.9 

1.0 

1.0 
.8 

.8 
.8 
.8 
.8 
.8 

.8 

.8 

1.1 

1.1 

1.0 


0.9 
.9 
.9 
.9 
.9 

.9 

.9 

.9 

4.8 

6.3 

2.9 
1.4 
1.4 

16.0 
.9 

.9 
1.2 

.9 
.9 
.9 

.9 
.9 
• 9 
.9 
.9 

.7 
.7 
.7 
.9 
.9 
.9 


0.7 
1.1 
1.1 
1.1 
1.3 

1.3 
1.3 
1.3 
1.3 
.5 

4.2 

.5 

1.3 

1.3 

.8 

10.0 

.8 

1.3 

1.3 

1.3 

1.3 
1.3 
1.3 
1.3 
1.3 

5.5 
4.8 
2.7 
.5 
4.8 
2.7 


0.4 
.4 
.4 
.7 

1.1 

1.1 
1.4 
1.1 
1.1 
1.1 

1.1 
1.1 
1.1 
1.1 
1.1 

1.1 
1.4 
1.1 
1.1 
1.1 

1.1 
1.1 
1.1 
1.1 
1.1 

1.1 
1.1 
1.1 
1.1 
1.1 


1.1 
1.1 
1.4 
1.2 
1.1 

1.1 

.5 

.4 

2.1 

1.2 

2.1 
4.0 
3.0 
3.5 
2.5 

1.1 
.4 
.4 
.4 

1.1 

.4 
4.5 
2.5 
2.5 
3.5 

14.5 
9.0 
7.5 
3.5 
3.5 
3.0 


3.5 
2.5 
2.5 
3.0 
3.0 

2.5 
3.0 
3.5 
6.8 
2.5 

2.5 
2.5 
2.5 
2.3 
3.3 

3.0 
2.3 
2.5 
2.5 
2.5 

16.5 
8.2 
5.2 
4.5 
4.0 

2.5 
2.5 
4.5 
8.2 
3.5 


14.5 


2 


14.5 


3 


35.0 


4 


10.0 


5 


8.2 


6 


6.8 


7 


7.5 


8 


7.5 


9 


7.5 


10 


6.8 


11 


6.2 


12 


4.9 


13 


4.9 


14 


4.9 




4.9 


16 


4.9 


17 


11.0 


18 


11.0 


19 


10.0 


20 


7.5 


21 


8.2 


22 


7.5 


23 


7.5 


24 


7.5 


25 


4.9 


26 


4.3 


27 


3.7 


28 


3.7 


29 


3.7 


30 


3.7 


31 


3.7 







Note. — Daily discharge, Feb. 1 to Aug. 31, computed by indirect methods for shifting channels. 
Monthly discharge of Manoa Stream at upper end of valley, near Honolulu, Oahu, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean, 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January , 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



3.0 

13.2 

19.0 

8.9 

8.5 

1.3 

16.0 

10.0 

1.4 

14.5 

16.5 

35.0 



0.7 
.6 
.8 

1.0 
.7 
.8 
.7 
.5 
.4 
.4 

2.3 

3.7 



1.39 
1.68 
3.21 
2.32 
1.44 
.91 
1.77 
1.98 
1.04 
2.71 
3.94 
7.96 



35.0 



.4 



2.54 



85.6 

97.0 

197.0 

138.0 

88.3 

54.0 

109.0 

122.0 

61.7 

167.0 

235.0 

490.0 



1,840 



108 



WATER RESOURCES OF HAWAII, 1912. 



MANOA STREAM AT COLLEGE OF HAWAII, NEAR HONOLULU. 

Location. — In ravine about half a mile southeast of College of Hawaii, and 3 miles 

east of Honolulu. 
Records available.— March 23, 1909, to November 24, 1910; November 1, 1912, to 

December 31, 1912. 
Gage. — Vertical staff; read twice daily, at 6.30 a. m. and 5. p. m.; weir destroyed by 

flood November 24, 1910; several changes in datum previous to 1912. 
Channel. — One channel for all stages; practically permanent. 
Discharge measurements. — By wading. 
Diversions. — One small irrigation ditch (maximum capacity about 1.5 second-feet), 

diverts water at a few hundred feet above the gage. 
Accuracy.-^Record good. 
Cooperation. — Maintained in cooperation with the College of Hawaii. 

Discharge measurements of Manoa Stream at College of Hawaii, near Honolulu, Oahu t 

in 1912. 



Date. 


Hydrographer. 


Width. 


Area of 
section. 


Gage 
height. 


Dis- 
charge. 


Nov. 23 


A. R. Keller 


Feet. 
18.0 
12.1 
12.6 


Sq.-ft. 
30.2 
7.82 
12.9 


Feet. 
2.28 
1.07 
1.41 


Sec.-ft. 
43.8 


Dec. 13 
20 


do 

G. K. Larrison 


2.19 
7.23 









Note.— A ditch diverts water a few hundred feet above station. Discharge of ditch at time measure- 
ment was made=0.74; this gives total run-off for stream (7.23+0.74) 7.97 second-feet. 

Daily gage height, in feet, of Manoa Stream at College of Hawaii, near Honolulu, Odhu, 

for 1912. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 


1.06 
1.00 
1.10 
.91 
1.19 

1.00 
1.40 
1.10 
2.15 
1.18 


2.30 
2.35 
3.75 
2.15 
1.98 

1.88 
1.80 
1.60 
1.40 
1.40 


11 


1.25 
1.30 
1.00 
.92 
1.35 

1.05 
1.00 
1.02 
1,03 
1.00 


1.20 
1.00 
1.15 
1.15 
1.00 

.98 
.95 
.98 
2.20 
1.38 


21 


2.25 
2.30 
2.35 
1.85 
1.60 

1.40 

1.40 
2.75 
2.25 
1.70 


1.90 


2 


12 


22 


3.25 


3 


13 


23.. 


2.25 


4 


14 


24 


3.65 


5 


15 


25 


1.90 


6 


16 


26 


2.50 


7 


17 


27 


2.15 


8 


18 


28 


1.90 


9 


19 


29 


1.40 


10 


20 


30 


1.40 






31 


1.40 











MANOA STREAM AT WAIALAE ROAD, NEAR HONOLULU, OAHTT. 

Location. — At Waialae road bridge, Honolulu, Oahu. 

Records available. — November 5, 1910, to February 6, 1911, and June 15 to Septem- 
ber 30, 1912, when station was discontinued. 

Gage. — Vertical staff; read twice daily, at 6 a. m. and 4 p.m.; new datum established 
June 15, 1912. 

Channel. — One at all stages; practically permanent. 

Discharge measurements. — At low water made by wading; at flood stages from 
bridge. 

Diversions. — All low-water discharge diverted above station. 

Accuracy. — No discharge rating obtained for new datum. 

The following discharge measurement was made by G. K. Larrison: 
September 18, 1912: Gage height, 3.18 feet; discharge, 0. 



ISLAND OF OAHTJ. 



109 



Daily gage height, in feet, of Manoa Stream at Waialae road, near Honolulu, Oahu, for 

1912. 



Day. 


June. 


July. 


Aug. 


Sept. 


Day. 


June. 


July. 


Aug. 


Sept. 


1 




3.45 

3.50 
3.50 
3.45 
3.50 

4.20 
5.30 
5.90 
5.80 
4.25 

4.25 
4.20 
4.60 
4.90 
4.30 


3.40 
3.40 
3.40 
3.45 
3.50 

3.60 
3.60 
3.55 
3.40 
3.40 

3.40 
3.95 
3.90 
3.90 
4.40 


4.40 
4.30 
4.10 
3.70 
3.70 

3.80 
3.80 
3.60 
3.55 
3.50 

3.40 
3.40 
3.40 
3.40 
3.30 


16 


3.50 
3.40 
3.40 
3.40 
3.40 

3.40 
3.45 
3.50 
3.55 
3.60 

3.55 
3.55 
3.45 
3.45 
3.45 


3.90 
3.70 
3.65 
4.10 
3.90 

3.90 
4.05 
4.00 
3.45 
3.40 

3.40 
3.40 
3.40 
3.95 
3.40 
3.40 


4.50 
4.20 
4.45 
4.90 
3.90 

3.60 
3.40 
3.40 
3.40 
4.45 

4.80 
4.00 
3.70 
3.50 
4.30 
4.15 


3.20 


2 




17 


3.25 


3 




18 


3.20 


4 . 




19 


3.15 


5 




20 


3.10 


6 




21 


3.10 


7 




22 


3.30 


8 




23 


3.40 


9 




24 


3.35 


10... . 




25 


3.20 


11 . 




26... 


3.20 


12 . 




27 


3.30 


13 . . 




28 


3.60 


14 




29 


3.30 




3.40 


30 


3.10 




31 













Note. — Station was abandoned, as records had little value; a better location was found at the College 
of Hawaii, about half a mile upstream, and a station was reestablished at that place. (See p. 108.) 

PAUOA STREAM BELOW KAHUAWAI SPRING, NEAR HONOLULU, OAHXT. 

Location. — Upper Pauoa Valley about 1 mile above Punchbowl and about 2.5 miles 
northeast of Honolulu. 

Records available. — April 14, 1911, to December 31, 1912. 

Gage. — October 17, 1911, to December 31, 1912, Watson weekly clock register; April 
14 to October 16, 1911, staff gage. 

Channel. — One channel at all stages. 

Discharge measurements. — Between April 14 and October 16, 1911, current- 
meter measurements were made by wading; from October 17, 1911, to December 
31, 1912, measurement was made by a 4-foot sharp-crested weir, which has been 
checked by meter measurements. 

Diversions. — None above station. 

Accuracy. — Records good. 

The following discharge measurement was made by C. H. Pierce: 
August 25, 1912: Width, 1 foot; area of section, 0.73 square foot; gage height, 0.12 
foot; discharge, 0.57 second-foot. 

Discharge, in second-feet, of Pauoa Stream below Kahuawai Spring, near Honolulu, 

Oahu, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.97 

1.87 
1.77 
1.77 
1.66 

1.57 
1.66 
2.19 
2.19 
1.87 

1.87 
1.87 
1.87 
1.87 
1.77 


0.93 
.93 

.85 
.77 
.77 

.77 
.77 
.70 
.70 

.85 

.85 
.85 
.85 
.85 
.85 


1.10 
1.02 
1.02 
1.02 
.93 

.93 
.93 
.93 

1.87 
2.19 

11.00 
5.14 
3.89 
2.30 

1.87 


1.47 
1.47 
1.47 
1.37 
1.47 

1.47 
1.57 
1.87 
1.57 
2.88 

1.37 
1.37 
1.28 
2.08 
1.97 


1.37 
1.37 
1.37 
1.37 
2.30 

1.37 
1.37 
1.37 
1.47 
1.47 

1.47 
1.28 
1.19 
1.37 
1.37 


1.47 
1.37 
1.19 
1.10 
1.10 

1.10 
1.10 
1.10 
1.10 
1.02 

1.02 
1.02 
1.02 
1.02 
1.02 


1.10 
1.66 
2.08 
1.37 
1.10 

1.19 

1.02 
.93 

.77 

.77 

.77 
.77 
.77 
.77 
.77 


1.02 

1.02 

.93 

.85 

.77 

.70 
.70 
.70 
.70 

.70 

.93 

.77 
.70 
.70 

.77 


1.02 
.93 

.85 
.77 
.77 

.77 
.85 

.85 
.77 

.77 

.77 
.77 
.77 
.77 
.70 


1.02 
2.53 
3.00 
1.57 
1.37 

1.10 
1.02 
1.10 
1.10 
1.10 

1.02 

.85 
.93 
.85 
.85 


1.10 
.93 

.85 
.85 
.93 

.93 

4.85 
3.63 
3.37 
1.77 

1.19 

1.10 
1.02 

.85 
.85 


8.14 


2 


9 18 


3 


13 52 


4 


3 76 


5..... 


2.64 


6 


2.30 


7 


2.08 


8 


1.97 


9 


1.87 


10 


1.77 


11 


1.77 


12 


1.77 


13 


1 97 


14 


1.66 


15 


1.77 



110 



WATEB RESOURCES OF HAWAII, 1912. 



Discharge, in second-feet, of Pauoa Stream below Kahuawai Spring, near Honolulu, 
Oahu, for 1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 


1.77 
1.66 
1.66 
1.57 
1.47 

1.37 
1.37 
1.28 
1.19 
1.19 

1.19 
1.10 
1.10 
1.10 
.93 
.93 


0.85 

.85 
.85 
.85 
.85 

1.02 
1.66 
10.87 
4.43 
2.08 

1.57 
1.28 
1.19 
1.10 


1.66 
1.57 
1.47 
1.77 
1.47 

1.47 
1.37 
1.37 
1.37 
1.37 

1.28 
1.37 
1.28 
1.37 
1.37 
1.47 


1.87 
1.77 
1.67 
1.57 
1.47 

1.37 
1.57 
1.57 
1.57 
1.57 

1.77 
1.57 
1.37 
1.47 
1.47 


1.28 

1.19 
1.10 
1.10 
1.19 

1.37 
1.19 
1.19 
2.88 
1.37 

3.89 
4.57 
3.63 
1.97 
1.66 
1.57 


1.02 
1.02 
.93 
.93 
.93 

.93 
.93 

.85 
.85 
.85 

1.10 
1.10 
.93 
1.19 
2.53 


0.77 

.77 
.77 
.77 
.70 

.93 
.93 
.93 

.85 

.85 

.85 
.85 
.85 
1.97 
1.10 
1.02 


0.70 
.70 
.62 
.62 
.70 

.70 
.70 
.70 
.62 
.62 

2.64 
1.77 

.85 
.77 
1.47 
1.19 


0.70 
.62 
.62 
.62 
.62 

.62 
.55 

.62 
.62 
.62 

.62 
.55 
.55 
.55 

.85 


0.85 

.77 

.77 
.77 
.77 

.77 
1.97 
6.50 

.93 
2.53 

12.92 
2.64 
1.77 
1.61 
1.44 
1.27 


0.93 

.85 
1.47 
1.10 

.85 

2.19 
3.63 
2.76 
1.57 
1.57 

1.47 
1.37 
1.37 
1.87 
2.08 


1.77 


17 


1.77 


18 


1.97 


19 


7.30 


20 


3.24 


21 


6.98 


22 


4.85 


23 


3.63 


24 


3.12 


25 


2.76 


26 


2.53 


27 


2.30 


28 


2.30 




2.19 


30 


2.08 


31 


2.08 







Monthly discharge of Pauoa' Stream below Kahuawai Spring, near Honolulu, Oahu, 

for 1912. 

[Drainage area, 0.79 square mile.] 



Month. 



Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Maximum. 


Minimum. 


Mean. 


2.19 


0.93 


1.57 


96.5 


10.9 


.70 


1.44 


82.8 


11.0 


.93 


1.91 


117 


2.88 


1.28 


1.61 


95.8 


4.57 


1.10 


1.70 


1.04 


2.53 


.85 


1.09 


64.9 


2.08 


.70 


.99 


60.9 


2.64 


.62 


.88 


54.2 


1.02 


.55 


.72 


42.8 


12.9 


.77 


1.86 


114 


4.85 


.85 


1.64 


97.6 


13.5 


1.66 


3.45 


212 


13.5 


.55 


1.58 


1,140 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October. 

November 

December 

The year 



KAHUAWAI SPRING NEAR HONOLULU, OAHU. 

Location. — Upper Pauoa Valley about 1\ milea above Punchbowl and one-fourth 

mile above Pauoa Stream weir station, about 2f miles northeast of Honolulu. 
Records available. — September 23 to December 31, 1912. 
Gage. — 2-inch by 2-inch heavy stake driven into pool of spring 10 feet above weir to 

measure head on weir; head read twice daily, at 6 a. m. and 6 p. m., by graduated 

stick. 
Channel. — Spring boils up vertically in pool about 10 feet in diameter. 
Weir discharge. — Weir is built between rock abutments on south side of pool about 

15 feet from pool center; discharge computed by Francis formula for sharp-crested 

weirs with end contractions. 
Accuracy. — Records excellent. 



ISLAND OF OAHU. 



Ill 



Discharge, in second-feet, of Kahuawai Spring near Honolulu, Oahu, for 1912. 



Day. 



.1 
2 
3 
4 
5 

6 
7 
8 
9 
10 

11 

12 
13 
14 
15. 



Oct. 


Nov. 


Dec. 


0.47 


0.50 


0.57 


.50 


.50 


.60 


.47 


.50 


.67 


.47 


.50 


.75 


.47 


.47 


.75 


.47 


.47 


.71 


.47 


.47 


.71 


.47 


.50 


.71 


.47 


.50 


.71 


.47 


.50 


.71 


.50 


.50 


.71 


.47 


.50 


.71 


.47 


.50 


.71 


.47 


.50 


.64 


.50 


.50 


.64 



Day. 



16 
17 

18 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



Oct. Nov. Dec 



0.47 

.47 
.47 
.47 

.47 

.47 
.47 
.47 
.47 

.47 

.54 
.54 
.54 
.50 
.50 
.50 



0.50 
.50 
.50 
.54 
.54 

.54 
.54 
.54 
.54 
.54 

.50 
.50 
.50 
.54 
.54 



0.64 
.63 
.62 
.61 



.58 
.57 
.57 
.57 

.57 
.57 
.57 
.57 
.57 
.57 



Note.— Daily discharge computed by formula for sharp-crested weirs with end contractions: D=3.33 
(L-0.2H)H* when L=1.50. 



Monthly discharge of Kahuawai Spring near 


Honolulu, 


Oahu, for 1912. 




Month. 


Discharge in second-feet. 


Eun-oflf 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


October 


0.54 
.54 
.75 


0.47 

.47 

.57 


0.48 
.51 
.64 


29.5 
30.3 
39.4 


A. 




A. 


December 


A. 






The period 


.75 


.47 


.54 


99.2 









NUUANU STREAM BASIN. 
NUUANU STREAM AT KTTAKINI STREET, HONOLULU, OAHTJ. 

Location. — At Kuakini Street bridge, Honolulu, Oahu. 

Records available. — November 15, 1911, to September 30, 1912, when station was 

discontinued. 
Drainage area. — Not measured. 

Gage. — Vertical staff; read twice daily, at 6 a. m. and 4 p.m.; no change in datum. 
Channel. — One at all stages. 
Discharge measurements. — At low-water stages made by wading; at flood stages 

from bridge. 
Diversions. — All low-water discharge is diverted above station. , 
Accuracy. — Records fair. 

The following discharge measurement was made by C. H. Pierce: 
August 23, 1912: Width, 2.4 feet; area of section, 0.63 square foot; gage height, 
0.18 foot; discharge, 0.24 second-foot. 



112 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, of Nuuanu Stream at Kuahini Street, Honolulu, OahUj 

for 1912. 
[Oshimo, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


1 


0.49 
.49 
.45 
.48 
.44 

.40 
.41 
.48 
.51 
.49 

.44 
.40 
.36 
.39 
.35 

.31 
.30 
.28 
.28 
.28 

.30 
.30 
.31 
.30 
.28 

.26 
.28 
.25 

.28 
.28 

.28 


0.28 
.30 
.29 
.28 
.28 

.28 
.28 
.28 
.28 
.30 

.30 
.28 
.25 
.25 
.25 

.25 
.25 
.25 
.25 

.28 

.29 
.34 
1.58 
1.32 
.79 

.42 
.40 
.32 
.28 


0.29 
.28 
.29 
.30 
.30 

.30 
.30 
.30 
.31 

.74 

1.36 
1.21 
1.01 
.71 
.51 

.46 
.45 
.41 
.52 
.50 

.41 
.42 
.41 
.38 
.38 

.35 
.36 

.38 
.38 
.38 
.38 


0.30 
.30 
.29 

.28 
.30 

.28 
.55 
.39 
.72 

.48 

.34 
.35 
.32 
.32 
.29 

.85 
.56 
.45 
.42 
.39 

.42 
.36 
.42 
.38 
.39 

.36 
.35 
.35 
.34 
.35 


0.32 
.30 
.30 
.30 
.31 

.30 
.31 
.31 
.30 
.30 

.28 
.28 
.28 
.30 
.29 

.28 
.28 
.28 
.29 
.29 

.30 
.32 
.36 
.39 
.32 

.36 
.36 
.55 
.42 
.36 
.35 


0.35 
.35 
.35 
.36 
.35 

.35 
.35 
.35 
.29 

.28 

.28 
.25 
.25 
.19 
.26 

.20 
.26 
.21 
.19 
.18 

.26 
.26 
.22 
.32 
.29 

.26 
.25 
.32 
.29 
.26 


0.26 
.30 
.29 
.34 
.29 

.25 
.25 
.24 
.24 
.26 

.25 
.25 
.26 
.51 
.34 

.28 
.28 
.26 
.20 
.18 

.20 
.20 
.21 
.18 
.19 

.18 
.18 
.18 
.16 
.15 
.15 


0.15 
.16 
.15 
.16 
.15 

.15 
.21 
.22 
.20 
.20 

.26 
.24 
.20 
.20 
.20 

.20 
.20 
.20 
.20 
.20 

.20 
.20 
.20 
.20 
.20 

.20 
.68 
.41 
.25 
.32 
.30 


0.28 


2 


.29 


3. 


.30 


4 


.28 


5.. 


.26 


6 


.26 


7 


.29 


8 


.22 


9 


.20 


10 


.20 


11 


.20 


12 


.20 


13 


.20 




.20 


15 


.20 


16 


.20 


17 


.16 


18 


.16 


19 


.16 


20 


.19 


21 


.18 


22 


.18 


23 


.19 


24 


.20 


25 


.20 


26 


.20 


27 


.20 


28 


.20 


29 


.20 


30 


.20 


31 









Discharge, in second-feet, of Nuuanu Stream at Kuahini Street, Honolulu, Oahu, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


1 


3.8 
3.8 
3.0 
3.6 
2.8 

2.2 
2.3 
3.6 
4.2 
3.8 

2.8 
2.2 
1.8 
2.1 
1.7 

1.3 
1.2 
1.0 
1.0 
1.0 

1.2 
1.2 
1.3 
1.2 
1.0 

.8 
1.0 

.7 
1.0 
1.0 
1.0 


1.0 
1.2 
1.1 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.2 

1.2 
1.0 

.7 
.7 

.7 

.7 
.7 
.7 
.7 
1.0 

1.1 

1.6 

55.0 

40.0 

13.5 

2.4 
2.2 
1.4 
1.0 


1.1 
1.0 
1.1 
1.2 
1.2 

1.2 
1.2 
1.2 
1.3 

11.4 

42.0 

34.0 

24.0 

.2 

4.2 

3.2 
3.0 
2.3 

4.4 
4.0 

2.3 
2.4 
2.3 
2.0 
2.0 

1.7 
1.8 
2.0 
2.0 
2.0 
2.0 


1.2 
1.2 
1.1 
1.0 
1.2 

1.0 
5.0 
2.1 

10.6 
3.6 

1.6 
1.7 
1.4 
1.4 
1.1 

16.2 
5.2 
3.0 
2.4 
2.1 

2.4 
1.8 
2.4 
2.0 
2.1 

1.8 
1.7 
1.7 
1.6 
1.7 


1.4 
1.2 
1.2 
1.2 
1.3 

1.2 
1.3 
1.3 
1.2 
1.2 

1.0 
1.0 
1.0 
1.2 
1.1 

1.0 
1.0 
1.0 
1.1 
1.1 

1.2 
1.4 
1.8 
2.1 
1.4 

1.8 
1.8 
5.0 
2.4 
1.8 
1.7 


1.7 
1.7 
1.7 
1.8 
1.7 

1.7 
1.7 
1.7 
1.1 
1.0 

1.0 

.7 
.7 
.3 
.8 

.4 
.8 
.4 
.3 
.2 

.8 

.8 

.5 

1.4 

1.1 

.8 

.7 

1.4 

1.1 

.8 


0.8 
1.2 
1.1 
1.6 
1.1 

.7 
.7 
.6 
.6 
.8 

.7 
.7 
.8 
4.2 
1.6 

1.0 
1.0 
.8 
.4 
.2 

.4 
.4 
.4 
.2 
.3 

.2 
.2 
.2 
.1 
.1 
.1 


0.1 
.1 
.1 
.1 
.1 

.1 

.4 
.5 
.4 
.4 

.8 
.6 
.4 
.4 
.4 

.4 
.4 

.4 
.4 
.4 

.4 
.4 
.4 
.4 
.4 

.4 
9.0 
2.3 

.7 
1.4 
1.2 


1.0 


2 


1.1 


3 


1.2 


4 


1.0 


5 


.8 


6 


.8 


7 


1.1 


8 


.5 


9 




10 




11 




12 




13 




14 




15 




16 




17 




18 




19 




20 


.3 


21 


.2 


22 


.2 


23 


.3 


24 


.4 


25 


.4 


26 


A 


27 


.4 


28 


.4 


29 


.4 


30 


.4 


31. 









ISLAND OF OAHU. 113 

Monthly discharge of Nuuanu Stream at Kuakini Street, Honolulu, Oahu, for 1912. 



Month. 


Discharge in second-feet. 




Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 




4.2 
55.0 
42.0 
16.2 
5.0 
1.8 
4.2 
9.0 
1.2 


0.7 
.7 
1.0 
1.0 
1.0 
.2 
.1 
.1 
.1 


1.95 

4.72 

5.67 

2.78 

1.46 

1.03 

.75 

.77 

.49 


120 

272 

349 

165 
89.8 
61.3 
46.1 
47.4 
29.2 


B. 




B. 




B. 




B. 




B. 




B. 


July 


B. 




B. 




B. 








55.0 


.1 


2.17 


1,180 









LT7LUMAHO DITCH IN NTTTTANO" VALLEY, NEAR HONOLULU, OAHU. 

Location. — About 500 feet east of spillway of upper Nuuanu Valley reservoir, about 

7 miles northeast of Honolulu. 
Records available. — September 2, 1911, to December 31, 1912. 
Gage. — Vertical staff; read once daily, at 4 p. m.; no change of datum. 
Channel. — One channel at all stages; shifting. 
Discharge measurements. — By wading. 
Accuracy. — Records fair. 

Discharge measurements of Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahu, 

for 1912. 

[L. A. Moore, observer.] 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 




H. R. Schulz 


Feet. 

0.43 

.28 

.31 

.35 


Sec.-ft. 
0.52 


Sept. 18 
Oct. 21 


G. K. Larrison 


.38 


do 


.53 


Dec. 24 


do 


.86 









Daily gage height, in feet, of Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahu, 

for 1912. 

[L. A. Moore, observer.] 



Day. 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 



0.45 
.45 
.45 
.44 
.43 

.44 
.46 
.48 
.45 
.44 

.43 
.42 
.41 
.40 
.40 

.40 
.40 
.40 
.40 
.40 



0.40 
.40 
.40 
.40 
.40 

.40 
.40 
.40 
.50 
.41 

.40 
.40 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 



0.40 
.40 
.40 
.40 
.40 

.40 
.40 
.45 

.70 
.80 

1.10 
.55 
.53 
.50 
.50 

.50 
.55 
.50 
.50 
.50 



0.45 
.44 
.43 
.50 
.54 

.50 

.50 
.65 
.50 



.46 
.45 
.43 
.45 



1.45 
.60 
.50 
.43 
.50 



0.40 
.40 
.40 
.40 
.40 

.40 
.40 
.38 
.38 
.38 

.38 

.38 
.38 
.38 
.38 



.37 
.37 
.45 
.40 



0.40 
.40 
.40 
.42 
.40 



.40 
.50 
.40 
.40 

.40 
.40 
.50 
.40 



.45 
.40 
.40 
.40 



0.35 
.35 
.35 
.34 
.34 

.32 
.32 
.50 
.60 
.45 

.40 
.40 
.40 
.43 
.45 

.42 
.41 
.40 
.40 



.030 
.30 
.30 
.30 
.30 

.30 
.30 
.30 
.30 
.35 



.40 



.50 
.30 



.35 
.30 



0.30 
.30 
.30 
.30 
.30 

.30 

.30 
.30 
.29 
.28 

.28 

.28 
.27 
.27 
.27 



0.30 
.30 
.30 
.30 
.30 

.30 
.30 
.30 

.40 



.27 
.27 



,30 



0.30 
.30 
.30 
.30 
.32 

.30 
.35 
.32 
.33 
.31 

.30 
.30 
.30 
.30 
.55 

.33 

.32 
.31 



1.60 
.60 

1.70 
.60 
.45 

.45 
.45 
.45 
.45 
.40 

.40 
.40 
.40 



.38 
.37 
.40 
.70 
.45 



14694°— wsp 336—14 8 



114 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, of Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahu, 

for 1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


21 


0.40 
.40 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 
.40 


0.40 
.40 

1.50 
.50 
.45 

.45 
.43 
.41 
.40 


0.48 
.46 
.45 
.44 
.55 

.50 
.50 
.43 
.43 
.43 
.42 


0.40 
.40 
.40 
.40 

.40 

.40 
.40 
.40 
.40 
.40 


0.45 
.40 
.40 
.50 
.45 

.45 
.50 
.45 
.40 
.40 
.40 


0.40 
.40 
.40 
.40 

.38 

.37 
.37 
.36 
.36 
.37 


0.30 
.30 
.30 
.30 
.30 

.30 
.30 
.30 
.30 
.30 
.30 


0.27 
.27 
.26 
.25 
.25 

1.30 
.55 
.45 
.40 
.55 
.40 


0.30 
.30 
.30 
.30 
.30 

.30 
.30 
.30 
.30 
.30 


0.30 
.30 
.30 
.30 
.30 

.90 
.35 
.35 
.35 
.34 
.32 


0.73 
.50 
.40 
.35 
.35 

.34 
.33 
.35 
.50 
.35 


0.54 


22 


.50 


23 


.43 


24 


.40 


25 


.33 


26.. 


.32 


27 


.30 


28 


.30 


29 


.30 


30 


.30 


31 


.32 







Daily discharge, in second-feet, of Lulumaho ditch in Nuuanu Valley, near Honolulu, 

Oahu, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.7 
.7 
.7 
.7 
.6 

.7 
.8 
1.0 
.7 
.7 

.6 
.5 

.4 
.4 
.4 

.4 
.4 
.4 
.4 
.4 

.4 
.4 
.4 
.4 
.4 

.4 
.4 
.4 
.4 
.4 
.4 


0.4 
.4 
.4 
.4 
.4 

.4 
.4 
.4 
1.2 
.4 

.4 
.4 
.4 
.4 
.4 

.4 
.4 
.4 
.4 
.4 

.4 

.4 

16.0 

1.2 

.7 

.7 
.6 
.4 
.4 


0.4 
.4 
.4 
.4 
.4 

.4 

.4 

.7 

3.6 

4.9 

9.1 
1.7 
1.5 
1.2 
1.2 

1.2 
1.7 
1.2 
1.2 
1.2 

1.0 

.8 

.7 

.7 

1.7 

1.2 
1.2 
.6 
.6 
.6 
.5 


0.7 

.7 

.6 

1.2 

1.6 

1.2 
1.2 
2,9 
1.2 
1.0 

.8 
.7 
.6 
.7 
2.3 

15.0 

2.3 

1.2 

.6 

1.2 

.4 
.4 
.4 
.4 
.4 

.4 
.4 

.4 
.4 
.4 


0.4 
.4 
.4 
.4 
.4 

.4 
.4 
.3 
.3 
.3 

.3 
.3 
.3 
.3 
.3 

.3 
.2 
.2 

.7 
.4 

.7 

.4 

.4 

1.2 

.7 

.7 
1.2 

.7 
.4 
.4 
.4 


0.4 
.4 
.4 
.5 
.4 

.4 

.4 

1.2 

.4 
.4 

.4 

.4 

1.2 

.4 
.4 

.4 

.7 
.4 
.4 
.4 

.4 
.4 
.4 
.4 
.3 

.2 
.2 
.2 
.2 
.2 


0.1 
.1 
.1 
.1 
.1 

.1 

.1 

1.2 

2.3 

.7 

.4 
.4 
.4 
.6 

.7 

.5 
.4 
.4 

.4 
.5 

.5 
.5 
.5 
.5 
.5 

.5 
.5 
.5 
.5 
.5 
.5 


0.5 
.5 
.5 
.5 
.5 

.5 
.5 
.5 
.5 
.9 

3.8 
1.4 

.5 
2.5 

.5 

3.8 
.9 
.5 
.5 
.3 

.3 
.3 
.2 
.2 
.2 

14.0 
3.1 
1.9 
1.4 
3.1 
1.4 


0.5 
.5 
.5 
.5 
.5 

.5 
.6 
.5 
.4 
.3 

.3 
.3 
.3 
.3 
.3 

.3 
.3 
.3 
.5 
.5 

.5 
.5 
.5 
.5 
•5 

.5 
.5 
.5 
.5 
.5 


0.5 
.5 
.5 
.5 
.5 

.5 

.5 

.5 

1.4 

.5 

.9 
.5 
.5 
.5 
.5 

.5 
.5 
.5 
.5 
.5 

.5 
.5 
.5 
.5 
.5 

8.0 
.9 
.9 
.9 
.8 
.6 


05 
.5 
.5 
.5 
.6 

.6 
.9 
.6 
.7 
.5 

.5 
.5 
.5 
.5 
3.1 

.7 
.6 
.5 
.5 
.5 

5.6 

2.5 

1.4 

.9 

.9 

.8 
.7 
.9 
2.5 
.9 


18.5 


2 


3.8 


3 


20.0 


4 


3.8 


5 


1.9 


6 


1.9 


7 


1.9 


8 


1.9 


9 


1.9 


10 


1.4 


11 


1.4 


12 


1.4 


13 


1.4 


14 


1.3 


15 


1.3 


16 


1.2 


17 


1.1 


18 


1.4 


19 


5.1 


20 


1.9 


21.... 


2.9 


22 


2.5 


23 


1.7 


24 


1.4 


25 


.7 


26 


.6 


27 


.5 


28 


.5 


29 


.5 


30 


.5 


31 


.6 







Monthly discharge of Lulumaho ditch in Nuuanu Valley, near Honolulu, 


Oahu, for 


1912. 


Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


January 


1.0 

16.0 
9.1 

15.0 
1.2 
1.2 
2.3 

14.0 

.5 

8.0 

5.6 

20.0 


0.4 
.4 
.4 
.4 
.2 
.2 
.1 
.2 
.3 
.5 
.5 
.5 


0.52 

1.02 

1.38 

1.39 

.46 

.43 

.49 

1.49 

.44 

.84 

1.03 

2.80 


32.0 
58.7 
84.8 
82.7 
28.3 
25.6 
30.1 
91.6 
26.2 
51.6 
61.3 
172.0 


B. 


February 


B. 


March 


B. 




B. 


May 


B. 


June 


B. 


July 


C. 


AugUSt ; 


B. 


September 


B. 


October 


B. 


November 


B. 


December 


B. 






The year 


20.0 


.1 


1.03 


746.0 









ISLAND OF OAHU. 



115 



LTJAKAHA WEIR IN NUUANU VALLEY, NEAR HONOLULU*, OAHU. 

Location. — About 1 mile below reservoir No. 4 (main) in upper Nuuanu Valley, about 
5 miles from Honolulu post office. 

Records available.— January 1, 1910, to December 31, 1912. 

Gage. — Head is measured in iron pipe set about 3 feet back of weir crest; read once 
daily, at 4 p. m.; no change in datum. 

Channel. — Concrete aqueduct; permanent. 

Discharge measurements. — 4-foot sharp-crested weir of concrete with end con- 
tractions; check measurements made with current meter by wading. 

Diversions. — Aqueduct diverts low-water flow from Luakaha Stream, including 
seepage from reservoir No. 4. 

Cooperation. — Records furnished by department of water works, city of Honolulu. 

Discharge measurements of Luakaha weir in NuuanuValley, near Honolulu, Oahu,for 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Sept. 19 
19 
20 


G. K. Larrison a 


Feet. 

0.195 

.195 

.208 

.202 


Sec-ft. 
0.901 


do.& 

do. a 


1.43 

.964 


20 


do.& 


1.50 









a Measurements made through notch in concrete aqueduct at a point about 15 feet below the weir. Owing 
to roughness of bottom and sides of the aqueduct the water was very turbulent and the results obtained 
are uncertain. 

b Measurements made at point in stream about 20 feet above intake and about 200 feet above -weir. On 
Sept. 19 the weir formula (end contracted, sharp crested) gave a discharge of 1.14 second-feet; on Sept. 20 
gave a discharge of 1.20 second-feet and 1.31 second-feet. 

Daily discharge, in second-feet, of Luakaha weir in Nuuanu Valley, near Honolulu, Oahu, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


5.4 
5.4 
5.4 

4.8 
4.8 

4.8 
4.8 
4.2 
4.2 
4.2 

4.2 
4.2 
4.2 
5.4 
4.2 

3.6 
3.6 
3.6 
3.6 
3.6 

3.6 
3.1 
3.1 
3.1 
3.1 

3.1 
3.1 
3.1 
3.1 
3.1 
3.1 


3.1 
3.6 
3.1 
3.1 
3.1 

3.1 
3.1 
3.1 
3.6 
3.1 

3.6 
3.1 
3.1 
3.1 
2.6 

2.6 
2.6 
2.6 
2.6 
2.6 

3.1 
3.1 
3.1 
21. 

10. 

4.8 
3.6 
3.1 
3.1 


3.1 
3.1 
3.1 
3.1 
3.6 

3.6 
3.6 
3.6 
6.0 

10. 

10. 
6.0 

10. 
4.8 
4.2 

4.2 

4.8 
4.8 
4.8 
4.2 

4.2 
4.2 
4.2 
4.2 

4.8 

4.2 
4.2 

4.2 
4.2 
4.2 
4.2 


4.2 
4.2 
4.2 
4.2 
4.8 

4.8 
4.8 
4.8 
6.0 
4.2 

4.2 
4.2 
4.2 
4.8 
4.8 

13. 
6.0 

4.8 
4.8 
4.8 

4.2 
4.2 

4.8 
4.8 
4.2 

4.8 
4.2 
4.2 
4.2 
4.2 


3.6 
3.6 
3.6 
3.6 
3.6 

3.6 
3.6 
3.6 
3.1 
3.1 

3.1 
3.1 
3.1 
3.1 
3.1 

3.1 
3.1 
3.1 
3.1 
3.1 

3.1 
3.1 
3.1 
3.6 
3.6 

3.6 
4.8 
6.0 
3.6 
3.6 
3.6 


3.6 
3.6 
3.6 
3.6 
3.1 

3.1 
3.1 
3.6 
3.1 
3.1 

3.1 
3.1 

4.8 
4.2 
3.6 

3.6 
3.6 
3.1 
3.1 
3.1 

3.1 
3.1 
2.6 
3.6 
2.6 

2.6 
2.6 
2.6 
2.6 
2.6 


3.1 
2.6 
2.6 
2.6 
2.6 

2.6 
2.6 
4.8 
3.6 
3.1 

3.1 
3.1 
3.1 
13.0 
3.6 

3.6 
3.6 
3.1 
3.1 
3.1 

3.1 
3.1 
2.6 
2.6 
2.6 

2.6 
2.6 
2.6 
2.6 
2.6 
2.6 


2.1 
2.1 
2.1 
2.6 
2.6 

2.1 
2.1 
2.1 
2.1 
2.1 

2.1 
2.1 
2.1 
2.6 
2.6 

3.6 
2.6 
2.1 
2.1 
2.1 

1.7 
1.7 
1.7 
1.7 
1.7 

6.0 
6.0 
3.6 
3.1 
3.1 
3.1 


1.7 
1.7 
1.7 
1.7 
1.7 

1.7 
2.6 
1.7 
1.7 
1.3 

1.3 
1.3 
1.3 
1.3 
1.3 

1.3 
1.3 
1.3 
1.3 
1.3 

1.3 
1.3 
1.3 
1.3 
1.3 

1.3 
1.1 
1.1 
1.1 
1.7 


1.3 
1.3 
1.3 
1.3 
1.3 

1.3 
1.3 
1.3 
1.3 
1.7 

1.7 
2.1 
1.7 
2.1 

1.7 

1.7 
1.7 
1.7 
1.7 
2.1 

1.7 
1.7 
1.7 
1.7 
1.7 

13.0 
4.8 
4.2 
3.1 
3.1 
2.1 


2.1 
2.1 
2.1 
2.1 
2.1 

1.7 
1.7 
2.1 
2.6 
2.1 

1.7 
1.7 

1.7 
1.7 
1.7 

2.6 
2.1 
2.1 
2.1 
2.1 

7.3 

3.6 
2.6 
2.6 
2.6 

2.6 
2.6 
3.1 
3.6 
3.1 


5.4 


2 


10.0 


3 


21.0 


4 


5.4 


5 


4.2 


6 


3.6 


7 


4.8 


8 


4.8 


9 


4.8 


10 


3.6 


11 


3.6 


12... 


3.6 


13 


3.6 


14 


3.1 


15 


3.6 


16 


3.1 


17 


3.1 


18 


3.1 


19 


21.0 


20 


4.8 


21 


4.8 


22 


3.6 


23 


3.6 


24 


3.6 


25 


3.6 


26 


3.6 


27 


3.1 


28 


3.1 


29 


3.1 


30 


3.1 


31 


3.6 







Note.— Weir has some velocity of approach, and discharge as published is probably too low; because of 
this velocity of approach the weir formula Q=3.33 LH3« is used instead of Q=3.33 (L-0.2H)H3/». 



116 WATER RESOURCES OF HAWAII, 1912. 

Monthly discharge of Luahaha weir in Nuuanu Valley, near Honolulu, Oahu, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


January 


5.4 
21.0 
10.0 
13.0 
6.0 
4.8 
13.0 
6.0 
2.6 
13.0 
7.3 
21.0 


3.1 
2.6 
3.1 
4.2 
3.1 
2.6 
2.6 
1.7 
1.1 
1.3 
1.7 
3.1 


3.96 
3.98 
4.75 
4.85 
3.47 
3.23 
3.30 
2.55 
1.44 
2.27 
2.46 
5.13 


243 

229 
292 
289 
213 
192 
203 
157 
85.7 
140 
146 
315 


C. 
C. 
C. 
C. 
C. 
C. 
C. 
C. 
C. 

c 


February 


March 


April 


May 


June 


July 


August 


September 


October 


November 


c 


December 


c 






The year 


21.0 


1.1 


3.45 


2,250 









WAIKANE STREAM BASIN. 
WAIKANE STREAM NEAR WAIKANE, OAHU. 

Location. — One-half mile above belt road highway bridge at Waikane, opposite house 
of Japanese gage keeper. 

Records available.— January 27 to September 30, 1912, when station was discon- 
tinued. 

Gage. — Vertical staff; read once daily, about 7 a. m.; washed out September 30, 1912, 
and not replaced. 

Channel. — One at all stages; shifting. 

Discharge measurements. — Made by wading. 

Diversions. — Several above station. 

Accuracy. — No discharge rating obtained. 

Discharge measurements of Waikane Stream near Waikane, Oahu, in 1912. 



Date. 



Hydrographer. 



Gage 
height. 



Dis- 
charge. 



Jan. 27 
May 24 
Aug. 1 



Pierce and Schulz 

W.V.Hardy 

C. H. Pierce 



Feet. 
1.05 
1.11 
.92 



Sec.-ft. 
6.31 
8.27 
4.34 



Daily gage height, in feet, of Waikane Stream near Waikane, Oahu, for 1912. 

[Sado, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


May. 


June. 


July. 


Aug. 


Sept. 


1 




1.05 
1.10 
1.05 
1.05 
1.05 

1.05 
1.05 
1.05 
1.05 
1.15 


1.05 
1.05 
1.05 
1.05 
1.05 

1.05 
1.05 
1.05 
1.05 
1.10 




1.00 
1.05 
1.05 
1.05 
1.05 

1.05 
1.05 
1.00 
1.00 
.90 


1.00 
1.00 
1.00 
1.00 
1.00 

.90 

.90 

1.00 

"""."90* 


1.00 
1.00 
1.00 
1.20 
1.00 

1.00 
1.20 
1.20 
1.20 
1.00 


0.90 


2 




.90 


3 




1.00 


4 




.90 


5 




.90 


6 




1.00 


7 




1.00 


8 




1.00 


9 




.90 


10 




.90 



ISLAND OF OAHU. 117 

Daily gage height, in feet, of Waihane Stream near Waihane, Oahu,for 1912 — Continued. 



Day. 


Jan. 


Feb. 


Mar. 


May. 


June. 


July. 


Aug. 


Sept. 


11 




1.05 
1.05 
1.05 
1.05 
1.05 

1.05 
1.05 
1.05 
1.05 
1.05 

1.05 
1.05 
1.05 
1.05 
1.05 

1.05 
1.05 
1.05 
1.05 


1.20 
1.10 
1.05 
1.05 
1.05 

1.30 

1.05 
1.05 
1.05 
1.05 

1.05 
1.05 
1.05 
1.05 
1.05 

1.05 
1.05 
1.05 
1.05 
1.05 
1.05 


i.'io" 
i.'oo" 

1.00 
1.00 
1.05 
1.00 


0.90 
1.00 
1.00 
.90 
1.00 

1.00 
.90 
.90 
.90 
.90 

1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
.90 
.90 
.90 

1.00 


0.90 
1.20 
1.20 
1.20 
1.10 

1.10 
1.10 
1.10 
1.20 
1.20 

1.00 

1.00 

1.00 

.90 

.90 

.90 
.90 
1.00 
1.00 
.90 
.90 


1.00 
.90 
.90 

1.00 
.90 

.90 

1.00 

1.00 

.90 

.90 

.90 

.90 

.90 

1.00 

1.00 

1.00 

1.00 

.90 

.90 

1.00 

.90 


1.00 


12 




.90 


13 




.90 


14 




.90 


15 




1.00 


16 




1.00 


17 




1.00 


18 : 




1.00 


19 




1.00 


20 




.90 


21 




.90 


22 




.90 






1.00 


24 




1.00 






.90 


26 




.90 


27 


1.05 
1.05 
1.05 
1.05 
1.05 


1.00 


28 


1.00 


29 


.91 




.91 


31 









WAIAHOLE STREAM BASIN. 
WAIAHOLE STREAM AT MANIANIAULA, NEAR WAIKANE, OAHU. 

Location. — 3£ miles southwest of Waikane, Oahu, by road and trail in upper 

Waiahole Valley, at boundary line of Government and private land. 
Records available. — September 25, 1911, to December 31, 1912. 
Gage. — Vertical staff; read twice daily, at 6 a. m. and 6 p. m.; no change in datum. 
Channel. — One at all stages; somewhat shifting. 
Discharge measurements. — By wading. 
Diversions. — None above gage. 
Accuracy. — Fair. 

Discharge measurements of Waiahole Stream at Manianiaula, near Waihane, Oahu, in 

1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Jan. 3 

26 

May 24 

Aug. 3 


H. R. Schulz 

Pierce and Schulz. . 

W.V.Hardy 

C.H.Pierce 


Feet. 

0.99 

.98 

.94 

.96 


Sec.-ft. 
25.1 
25.1 
21.5 
21.6 


Sept. 16 
Oct. 16 
Dec. 31 


C. K. Larrison 

do 

Larrison <fe Dort... 


Feet. 
0.94 
.98 
.91 


Sec.-ft. 
19.8 
23.6 
18.2 



Daily gage height, in feet, of Waiahole Stream at Manianiaula, near Waikane, Oahu, for 

1912. 











[Peleioholani, 


observer.] 












Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 


1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.01 


1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 


1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 




0.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 


0.98 
.98 
.98 
.98 
.98 

.98 
.98 
.98 
.98 
1.00 


0.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 


0.98 
.98 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 


0.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 


0.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 


0.95 


2 


.98 


3 


1.88 


4 


1.00 


5 


.98 


6 


.98 


7 


.95 


8 


.95 


9 


.95 


10 


.95 



118 



WATEE RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, of Waiahole Stream at Manianiaula, near Waikane, Oahu,for 

1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dee. 


11 


1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 
1.00 


1.00 
1.00 
1.00 
1.02 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 


1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 
1.00 


1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.08 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 

1.00 
1.00 
1.00 
1.00 
1.00 


"6." 95* 
.95 

.95 
1.05 
.96 
.95 
.95 
.95 


0.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 

.95 
1.00 
1.00 
1.00 
1.00 


1.00 
1.00 
1.10 
1.00 
1.00 

1.00 
.98 
.98 
.98 
.98 

.98 
.98 
.98 
.98 
.98 

.98 
.98 
.95 
.95 
.95 
.95 


0.98 
.98 
.98 
,98 
.98 

.98 
.98 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.98 
.98 


0.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 


0.95 
.95 
.95 
.95 
.95 

.95 

.98 
.98 
.98 
.98 

.98 
.99 
.95 
.95 
.95 

1.05 

.98 

1.15 

1.00 

.98 

.95 


0.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 

.98 
.98 
.98 
.95 
.95 

.95 
.95 
.95 
1.02 
.98 


0.95 


12 


.92 


13 


.92 


14 


.92 


15 


.92 


16 


.92 


17 


.92 


18... 


.92 


19 


.92 


20 


.92 


21 


.92 


22 


.99 


23 


.95 


24 


.95 


25 


.95 


26 


.92 


27 


.92 




.92 


29 








31 


.91 



Daily discharge, in second-feet, of Waiahole Stream at Manianiaula, near Waikane, Oahu, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


! 


26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 
26.5 


26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
27.5 

26.5 
26.5 
26.5 
28.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 


26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 
26.5 


26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
36.0 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 

26.5 
26.5 
26.5 
26.5 
26.5 


"2L5" 
21.5 

21.5 
32.0 
22.5 
21.5 
21.5 
21.5 


21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
26.5 
26.5 
26.5 
26.5 


24.5 

24.5 
24.5 
24.5 
24.5 

24.5 
24.5 
24.5 
24.5 
26.5 

26.5 
26.5 
38.0 
26.5 
26.5 

26.5 
24.5 
24.5 
24.5 
24.5 

24.5 
24.5 
24.5 
24.5 
24.5 

24.5 
24.5 
21.5 
21.5 
21.5 
21.5 


21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

24.5 
24.5 
24.5 
24.5 
24.5 

24.5 
24.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5" 

21.5 
21.5 
21.5 
21.5 
24.5 
24.5 


24.5 
24.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 


21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
24.5 
24.5 
24.5 
24.5 

24.5 
25.5 
21.5 
21.5 
21.5 

32.0 
24.5 
44.0 
26.5 
24.5 
21.5 


21.5 
21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

21.5 

21.5 
21.5 
21.5 
21.5 

21.5 
21.5 
21.5 
21.5 
21.5 

24.5 
24.5 
24.5 
21.5 
21.5 

21.5 
21.5 
21.5 
28.5 
24.5 


21.5 


2 


24.5 


3 


132.0 


4 


26.5 


5 


24.5 


6 


24.5 


7 


21.5 


8 


21.5 


9 


21.5 


10 


21.5 


11 


21.5 


12 


18.7 


13 


18.7 


14 : 


18.7 


15 


18.7 


16 


18.7 


17 


18.7 


18 


18.7 


19 


18.7 


20 


18.7 


21 


18.7 


22 


25.5 


23 


21.5 


24 


21.5 


25 


21.5 


26 


18.7 


27 


18.7 


28 


18.7 


29 


18.7 


30 


17.8 


31 


17.8 







ISLAND OP OAHU. 119 

Monthly discharge of Waiahole Stream at Manianiaula, near Waihane, Oahu, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 




26.5 
28.5 
26.5 
36.0 
32.0 
26.5 
38.0 
24.5 
24.5 
44.0 
28.5 
132.0 


26.5 
26.5 
26.5 
26.5 
21.5 
21.5 
21.5 
21.5 
21.5 
21.5 
21.5 
17.8 


26.5 
26.6 
26.5 
26.8 
22.9 
22.2 
24.9 
22.4 
21.7 
23.5 
22.1 
24.1 


1,630 
1,530 
1,630 
1,590 
1,410 
1,320 
1,530 
1,380 
1,290 
1,440 
1,320 
1,480 


C. 




C. 


March . 


C. 


April 


C. 




B. 


June 


B. 


July 


B. 




B. 




B. 


October 


B. 


November 


B. 


December 


B. 






The year s . .' 


132.0 


17.8 


24.3 


17,600 









a 8 days only. 
WAIAHOLE STREAM AT WAIAHOLE, NEAR WAIKANE, OAHU. 

Location. — One-fourth mile above belt road highway bridge, 1 mile southeast of 

Waikane, Oahu. 
Records available.— September 23, 1911, to December 31, 1912. 
Gage. — Vertical staff; read once daily, about 7 a. m. ; no change in datum. 
Channel. — One at all stages, slightly shifting. 
Discharge measurements. — Low- water measurements made by wading; flood 

measurements from bridge. 
Diversions. — Several irrigation ditches divert water above the station: none below. 
Accuracy. — Record fair. 

Discharge measurements of Waiahole Stream at Waiahole, near Waihane, Oahu, 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Jan. 2 

23 

May 23 


H. R.Schulz 

C.H.Pierce 

W.V.Hardy 


Feet. 
1.25 
1.22 
1.10 


Sec.-ft. 
38.7 
39.3 
25.1 


Aug. 1 

5 

Dec. 31 


C. H. Pierce 

do 

Larrison and Dort . 


Feet. 
1.11 
1.14 
1.10 


Sec.-ft. 
27.0 
29.2 
26.3 



Daily gage height, in feet, of Waiahole Stream at Waiahole, near Waikane, Oahu, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


, Sept. 


Oct. 


Nov. 


Dec. 


1 




1.22 
1.22 
1.25 
1.25 
1.25 

1.22 
1.25 
1.22 
1.25 
1.32 

1.22 
1.22 
1.22 
1.22 
1.22 


1.20 

1.18 
1.18 
1.18 
1.18 

1.18 
1.18 
1.18 
1.18 
1.18 

1.22 
1.18 
1.18 
1.18 
1.18 


1.18 
1.18 
1.18 
1.18 
1.18 

1.18 
1.20 
1.20 
1.20 
1.18 

1.18 
1.15 
1.15 
1.20 
1.20 




1.10 
1.10 
1.13 
1.13 
1.10 

1.13 
1.13 
1.10 
1.10 
1.10 

1.10 
1.10 
1.10 
1.10 
1.10 


1.12 
1.13 
1.13 
1.13 
1.13 

1.13 
1.20 
1.20 
1.20 
1.20 

1.45 
1.20 
1.20 


"i.'io" 

1.10 

1.15 
1.15 
1.12 
1.10 
1.10 

1.25 
1.10 
1.10 
1.10 
1.10 


1.15 
1.15 
1.10 
1.10 
1.10 

1.10 
1.10 
1.10 
1.10 
1.10 

1.10 
1.10 
1.10 
1.10 
1.10 


1.10 
1.10 
1.15 
1.10 
1.10 

1.10 
1.10 
1.10 
1.10 
1.10 

1.15 
1.15 
1.10 
1.10 
1.10 


1.15 
1.15 
1.15 
1.15 
1.15 

1.10 
1.10 
1.10 
1.10 
1.15 

1.15 
1.20 
1.20 
1.20 
1.20 


1.25 


2 


1.25 
1.25 
1.25 
1.25 

1.25 
1.28 
1.25 
1.25 
1.25 

1.25 
1.25 
1.25 
1.28 
1.25 


1.25 


3 


1.40 


4 


1.40 


5 


1.25 


6 


1.10 


7 


1.10 


8... 


1.10 


9 


1.10 


10 


1.10 


11 


1.10 


12 


1.10 


13 


1.10 


14 


1.10 


15 


1.10 



120 



WATER, RESOURCES OE HAWAII, 1912. 



Daily gage height, in feet, of Waiahole Stream, at Waiahole, near Waikane, Oahu,for 

1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 


1.25 
1.25 
1.25 
1.25 
1.25 

1.25 
1.25 
1.25 
1.28 
1.25 

1.22 

1.22 
1.25 
1.25 
1.25 
1.22 


1.22 
1.22 
1.22 
1.22 
1.22 

1.25 
1.22 
1.22 
1.18 
1.18 

1.18 
1.18 
1.18 
1.18 


1.18 
1.18 
1.18 
1.18 
1.18 

1.18 
1.18 
1.18 
1.18 
1.18 

1.15 
1.15 
1.15 
1.15 
1.18 
1.15 


1.20 
1.20 
1.20 
1.20 
1.18 

1.18 
1.18 
1.20 
1.20 
1.18 

1.18 
1.18 
1.18 
1.18 
1.18 


""i.'io" 

1.10 
1.10 

1.10 
1.15 
1.10 
1.10 
1.10 
1.10 


1.10 
1.10 
1.10 
1.10 
1.13 

1.13 
1.13 
1.13 
1.13 
1.13 

1.13 
1.13 
1.20 
1.13 
1.13 


::::::: 


1.10 
1.10 
1.15 
1.10 
1.10 

1.10 
1.10 
1.10 
1.10 
1.10 

1.10 
1.10 
1.10 
1.10 
1.10 
1.10 


1.10 
1.10 
1.10 
1.10 
1.10 

1.10 
1.10 
1.10 
1.10 
1.10 

1.10 
1.10 
1.10 
1.10 
1.15 


1.10 
1.10 
1.10 
1.10 
1.10 

1.10 
1.10 
1.10 
1.15 
1.15 

1.15 
1.20 
1.20 
1.20 
1.15 
1.15 


1.20 
1.20 
1.20 
1.20 
1.20 

1.20 
1.20 
1.20 
1.20 
1.20 

1.20 
1.20 
1.20 
1.20 
1.20 


1.10 


17 


1.10 


18 


1.25 


19 


1.10 


20 . 


1.10 


21 


1.25 


22 


1.25 


23 


1.10 


24 


1.10 


25 




25 




27 




28 




23 




33 




31 


1.10 











Daily discharge, in second-feet, of Waiahole Stream at Waiahole, near Waikane, Oahu, for 

1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



2 


44 


3 


44 


4 


44 


5 


44 


6 


44 


7 


49 


8 


44 


9 


44 


10 


44 


11 


44 


12 


44 


13 


44 


14 


49 


15 


44 


16 


44 


17 


44 


18 


44 


19 


44 


20 


44 


21 


44 


22 


44 


23 


44 


24 


49 


25 


44 


26 


39 


27 


39 


28 


44 


29 


44 


30. . . 


44 


31 


39 



44 



33 



33 



33 



36 



33 



28 



28 



26 



36 



26 



Note.— Discharge from July 14 to Aug. 
Manianiaula. 



3 estimated by comparison with Waiahole Stream at 



ISLAND OF OAHU. 121 

Monthly discharge of Waiahole Stream at Waiahole near Waikane, Oahu, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 




49 
55 
39 
36 
30 
36 
80 
44 
30 
36 
36 
70 


39 
33 
30 
30 
26 
26 
27 
26 
26 
26 
26 
26 


42.6 
39.4 
32.8 
33.9 
26.5 
27.3 
32.9 
27.0 
26.4 
28.0 
33.3 
32.3 


2,620 
2,260 
2,020 
2,020 
1,630 
1,620 
2,020 
1,660 
1,570 
1,720 
1,980 
1,990 


B. 




B. 




B. 




B. 




D. 




B. 


July 


C. 




C. 




B. 




B. 


November 


B. 




C. 






The year 


80 


26 


32.2 


23, 100 









a 9-day period. 
KAHANAIKI STREAM NEAR WAIMAHALO, OAHTT. 

Location. — At highway bridge on Waimanalo-Honolulu road, about 12 milea east of 

Honolulu by road. 
Records available. — Gage heights and discharge measurements from November 12 

to December 31, 1912. 
Gage. — Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; no change in 

datum. 
Channel. — One at all stages; permanent. 

Diversions. — One from each of the two branches of the stream above the station. 
Accuracy. — Good . 

Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 
Discharge measurements. — Low-water stages by wading; flood measurements 

from bridge. 

Discharge measurements of Kahanaihi Stream near Kailua, Oahu, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Nov. 20 




Feet. 
1.00 
.99 


Sec-feet. 
0.65 


Dec. 27 




.82 









Daily gage height, in feet, of Kahanailci Stream near Waimanalo, Oahu, for 1912. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




1.72 
1.39 
2.24 
1.62 
1.58 

1.36 
1.36 
1.35 
1.31 
1.29 


11 




1.25 
1.22 
1.22 
1.20 
1.19 

1.16 
1.16 
1.16 
1.16 
1.15 


21 


1.12 
1.14 
1.14 
1.12 
1.11 

1.10 
1.09 
1.09 
1.15 
1.12 


1.20 


2 




12. 


1.05 
1.02 
1.04 
1.10 

1.04 
1.02 
1.02 
1.04 
1.02 


22 


1.22 


3 




13 


23 


1.15 


4 




14 


24 


1.15 


5 




15 


25. . 


1.15 


6 




16 


26 


1.15 


7... 




17 


27 


1.00 


8 




18 


28 


.98 


9 




19 


29 


.98 


10 




20 


30 


.98 








31 


.98 











122 



WATEB RESOURCES OF HAWAII, 1912, 



XAILTJA STREAM NEAR WAIMANALO, OAHU. 

Location. — Three-fourths mile east of point on Waimanalo-Honolulu road, where 

road to rice mill leaves main highway; about 150 feet below intake at Wong 

Leong ditch. 
Records available. — Gage heights and discharge measurements from November 12 

to December 31, 1912. 
Gage. — Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; no change in 

datum. 
Channel. — One at all stages; fairly permanent. 
Discharge measurements. — By wading. 
Diversions. — Wong Leong ditch diverts all low-water discharge at point 150 feet 

above gage. 
Accuracy. — Record fair. 
Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 

Discharge measurements of Kailua Stream near Waimanalo, Oahu, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Not. 20 


G. K. Larrison 


Feet. 
1.79 
2.19 


Sec.-ft. 

(a) 

1.64 


I>ec. 276 











a Water diverted by ditch at dam 150 feet above. & Wading 100 feet above gage. 

Daily gage height, in feet, of Kailua Stream near Waimanalo, Oahu, for 1912. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




2.89 
2.20 
4.25 
2.60 
2.54 

2.31 
2.40 
2.41 
2.34 
2.31 


11 




2.31 
2.30 
2.30 
2.30 
2.30 

2.29 
2.28 
2.26 
2.32 
2.29 


21 


1.84 
1.88 
1.81 
1.80 
1.80 

1.80 
1.80 
2.00 
2.01 
1.80 


2.30 


2 




12 


1.78 
1.78 
1.78 
1.89 

1.80 
1.80 
1.80 
1.80 
1.80 


22 


2.30 


3 




13 


23 


2.28 


4 




14 


24 '.. 


2.28 


5 




15. 


25 


2.20 


6.. 




16 


26 


2.20 


7... 




17 


27 


2.20 


8 




18 


28 


2.20 


9 




19 


29 


2.20 


10 




20 


30 


2.20 








31 


2.19 











POHAKEA STREAM NEAR WAIMANALO, OAHU. 

Location. — One-half mile above highway bridge on the Waimanalo-Honolulu road, 

about 12 miles by road east of Honolulu. 
Records available. — November 12 to December 31, 1912. 
Gage. — Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; no change in 

datum. 
Channel. — One at all stages; fairly permanent. 
Discharge measurements. — By wading for all stages. 
Diversions. — None above station; two small ditches below station. 
Accuracy. — Fair. 
Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 



ISLAND OF OAHU. 123 

Discharge measurements ofPohahea Stream near Waimanalo, Oahu, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Nov. 20 


G . K. Larrison 


Feet. 
0.92 
1.18 


Sec-ft. 
0.06 


Dec. 27 




.17 









Daily gage height, in feet, of Pohahea Stream near Waimanalo, Oahu, for 1912. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1_ 




1.69 
j 1.21 
1.74 
1.55 
1.52 

1.38 
1.38 
1.34 
1.31 
1.29 


11 




1.28 
1.24 
1.28 
1.24 
1.22 

1.22 
1.22 
1.21 
1.21 
1.20 


21 


1.14 
1.11 
1.06 
1.02 
1.01 

1.00 
1.00 
1.02 
1.20 
1.05 


1.22 


2 




12 


0.95 
.95 
.92 

1.04 

.95 
.95 
.92 
.94 

.94 


22 


1.21 


3 




13 


23 


1:20 


4 •. 




14 


24 


1.20 


5 




15 


25 


1.20 


6 




16 


26 


1.20 


7 




17 


27 


1.15 


8 




18 


28 


1.15 


9 




19 


29 


1.15 


10 




20 


30 


1.15 








31 


1.15 











KAMAKALEPO STREAM NEAR WAIMANALO, OAHTT, 

Location. — At highway bridge on Waimanalo-Honolulu road, about 12 miles east, 

by road, of Honolulu. 
Records available. — November 12 to December 3, 1912. 
Gage. — Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; washed out by 

flood December 3, 1912; not replaced. 
Channel. — One at all stages; fairly permanent. 
Discharge measurements.— Low-water measurements made by wading; flood 

measurements made from bridge. 
Diversions. — None. 
Accuracy. — Fair. 
Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 

Discharge measurements of Kamahalepo Stream near Waimanalo, Oahu, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Nov. 20 


G. K. Larrison 


Feet. 
1.24 


Sec.-ft. 
0.96 


Dec. 27 


Larrison and Dort 


1.52 











Daily gage 


height, 


in feet, 


of Kamahalepo 


Stream near Waimanalo, Oahu, for 1912. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




1.92 
1.40 
1.50 


11 






21 , 


1.25 
1.29 
1.28 
1.25 
1.25 

1.25 
1.25 
1.26 
1.34 
1.28 




2 




12 


1.25 
1.22 
1.22 
1.28 

1.24 
1.22 
1.22 
1.24 
1.22 




22 




3 




13 


23 




4 




14 


24 




5 






15 : 


25 




6 






16 


26 




7 






17 


27 




8 






18 


28 




9... 






19 i 


29 




10 






20 


30 












31 













124 



WATER RESOURCES OF HAWAII, 1912. 



KAIMI STREAM NEAR WAIMANALO, OAHU. 

Location. — At highway bridge on Waimanalo-Honolulu road about 12£ miles east by- 
road from Honolulu. 

Records available. — Gage heights and discharge measurements from November 12 
to December 31, 1912. 

Drainage area. — Not measured. 

Gage. — Vertical staff; read twice daily, about 7 a. m. and 4 p. m. ; no change in datum. 

Channel. — One at all stages; fairly permanent. 

Discharge measurements. — Low-water by wading; floods from bridge. 

Diversions. — None. 

Accuracy. — Good . 

Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 



Discharge measurements of Kaimi Stream near Waim 


analo, Oahu, in 1912. 


Pate. 


Hydrographer. 


Gage 
height. 


Dis- 
charge, 


Nov. 20 


G. K. Xiarrison . .' 


Feet. 
1.59 
1.86 


Sec.-ft. 
1.38 


Dec. 27 




3.72 









Daily gage height, in feet, of Kaimi Stream near Waimanalo, Oahu, for 1912. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




2.48 
1.82 
2.72 
2.01 
1.99 

1.84 
1.88 
1.89 
1.89 
1.90 


11 




1.80 
1.70 
1.70 
1.70 

1.88 

1.89 
1.90 
1.89 
1.95 
1.89 


21 


1.64 
1.66 
1.62 
1.60 
1.61 

i 1.60 
1.65 
1.76 
1.75 
1.69 


1.90 


2 




12 


1.58 
1.58 
1.58 
1.68 

1.58 
1.58 
1.58 
1.60 
1.59 


22 


1 89 


3 




13 


23 


1.88 


4 




14 


24 


1.90 


5 




15 


25 


1.90 


6 




16 


26 


1.90 


7. . 




17 


27 


1.90 


8 




18 


28 


1.85 


9 




19 


29 .... 


1.85 


10 




20 


30 


1.85 








31 


1.88 











MAKAWAO STREAM NEAR WAIMANALO, OAHTJ. 

Location. — One-fourth mile upstream from confluence of Makawao and Kaimi 
streams and 100 feet above intake of irrigation ditch on Waimanalo-Honolulu 
road about 12| miles east by road of Honolulu, Oahu. 

Records available. — November 12 to December 31, 1912. 

Gage. — Vertical staff; read twice daily, at 7 a. m. and 4 p. m.; no change in datum. 

Channel. — One at all stages; practically permanent. 

Discharge measurements. — By wading. 

Diversions. — Low- water discharge of two main branches is diverted into the Makawao 
ditch at points about three-fourths mile above station. An irrigation ditch 
diverts most of the low-water discharge at a point about 100 feet below the gage. 

Accuracy. — Records excellent. 

Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 



Discharge measurements of Makawao Stream near 


Waimanalo, Oahu, in 1912. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Nov. 20 


G. K. Larrison 


Feet. 
0.81 
.90 


Stt.-ft. 
0.96 


Dec. 27 


Larrison and Dort 


2.24 









ISLAND OF OAHU. 125 

Daily gage height, in feet, of Makawao Stream near Waimanalo, Oahu, for 1912. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1...., 




1.45 
1.99 
2.46 
1.14 
1.09 

.86 
.94 
.96 
.99 
.95 


11 




0.95 
.96 
.95 
.92 

.92 

.92 
.92 
.95 
.95 
.92 


21 


0.84 

.84 
.82 
.82 
.82 

.82 
.82 
.89 
.84 
.82 


0.90 


2 




12 


0.80 
.80 
.81 
.81 

.81 
.80 
.80 
.81 
.80 


22 


.94 


3 




13 


23 


.91 


4 




14 


24 


.91 


5 




15 


25 


.90 


6 




16 


26 


.90 


7 




17 


27 


.90 


8 ;... 




18 


28 


.90 


9 




19 


29 


.90 


10 




20 


30 


.90 








31 


.90 











MAKAWAO DITCH NEAR WAIMANALO, OAHU. 

Location. — At east end of flume in Makawao Gulch, 4 miles west of Waimanalo 
plantation headquarters. Waimanalo plantation is about 15 miles east of Hono- 
lulu, Oahu. 

Records available.— November 1 to December 31, 1912. 

Gage. — Vertical staff on right side at east end of flume; graduated to hundredths; 
read twice daily, at 8 a. m. and 4 p. m., by ditch tender at plantation. 

Channel. — Flume 2.0 x 1.25 feet; clean and in good condition. 

Discharge measurements. — By wading. 

Accuracy. — Excellent. 

Cooperation. — Maintained in cooperation with the Waimanalo Plantation Co. 

Discharge measurements of Makawao ditch near Waimanalo, Oahu, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Oct. 24 


Larrison and Kea 


Feet. 
0.62 
.64 
.25 


Sec.-ft. 
1.81 


31 


G. K. Larrison 


2.36 


Dec. 27 


Larrison and Dort .' 











Daily gage height, in feet, of Makawao ditch near Waimanalo, Oahu, for 1912. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 




0.65 
.65 
.65 
.65 


0.72 
.95 
.95 
.91 
.94 

Dry. 
Dry. 
Dry. 
Dry. 
Dry. 


11 




0.65 
.65 
.66 


Dry. 
Dry. 
Dry. 
Dry. 
Dry. 

Dry. 
Dry. 
Dry. 
Dry. 
Dry. 


21 




0.70 
.73 

.68 

"\*70" 

.69 
.69 
.92 

.84 
.78 


Dry. 
Dry. 
Dry. 
Dry. 
Dry. 

Dry. 
Dry. 
Dry. 
Dry. 
Dry. 
Dry. 


2 




12 




22 




3 




13 




23 




4 




14 




24 


0.62 


5 




15 






25 


6 




.65 
.65 
.70 
.70 


16 




.68 


26 




7 




17 




27 




8 





18 




.67 


28 




9 


19 




29 




10 




20 




.67 


30 














31 


.64 







WONG LEONG DITCH NEAR WAIMANALO, OAHTJ. 

Location. — Three-fourths mile east of point where road to rice mill leaves Waimanalo- 
Honolulu road, and about 100 feet below ditch intake on the Kailua Stream. 

Records available. — Gage heights and discharge measurements from November 12 
to December 31, 1912. 



126 



WATER RESOURCES OF HAWAII, 1912. 



Gage. — Vertical staff; read twice daily, about 7 a. m. and 4 p.m.; no change in datum. 

Channel. — One at all stages; permanent. 

Discharge measurements. — By wading. 

Diversions. — This ditch diverts the low-water discharge of the Kailua Stream. 

Accuracy. — Excellent. 

Cooperation. — Maintained in cooperation with the Kaneohe Ranch Co. 

Discharge measurements of Wong Leong ditch near Waimanalo, Oahu, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Nov. 20 


G. K. Larrison 


Feet. 
1.13 
1.51 


Sec-feet. 
3.10 


Dec. 27 




6.48 









Daily gage height, in feet, of Wong Leong ditch near Waimanalo, Oahu, for 1912. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




1.58 
1.42 
1.55 
1.40 
1.45 

1.50 
1.50 
1.50 
1.50 
1.50 


11 




1.50 
1.50 
1.50 
1.50 
1.50 

1.50 
1.50 
1.50 
1.52 
1.52 


21 


1.30 
1.31 
1.25 
1.15 
1.15 

1.15 
1.15 
1.38 
1.38 
1.25 


1 52 


2 




12 


1.50 
1.52 
1.52 
1.72 

1.59 
1.56 
1.55 
1.12 
1.12 


22 


1 51 


3 




13 


23 


1.50 


4 




14 


24 


1.50 


5 




15 


25 


1.50 


6 




16 


26 


1.50 


7 




17 


27 


1.50 


8 




18 


28 


1-50 


9 




19.. 


29 


1.50 


10 




20 


30 


1.50 








31 


1.51 











WAIMANALO DITCH BELOW RESERVOIR NEAR WAIMANALO, OAHU. 

Location. — On main ditch immediately below main reservoir on the Waimanalo 
plantation on windward Oahu, about 2 miles southwest of the plantation head- 
quarters. Waimanalo is about 15 miles east of Honolulu. 

Records available. — October 31 to December 31, 1912. 

Gage. — Vertical staff on left bank immediately below reservoir; read to quarter- 
tenths twice daily by plantation employee. 

Channel. — Straight, practically permanent, and clean; bed and both banks are firm 
clay. 

Accuracy. — Excellent. 

Cooperation. — Maintained in cooperation with the Waimanalo Plantation Co. 

Discharge measurements of Waimanalo ditch below reservoir near Waimanalo, Oahu, 

in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Oct. 31 




Feet. 
1.39 


Sec.'feet. 
7.38 


Dec. 27 




Dry 









Note.— Ditch operated 11 hours per day. Dry during remainder of 24 hours. 



ISLAND OF OAHU. 



127 



Daily gage height, in feet, of Waimanalo ditch below reservoir near Waimanalo, Oahu, 

.for 1912. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 


1.32 
1.29 


""i.16 

1.40 
1.40 
1.40 

1.40 
1.40 

""i'.lh 


11 


1.41 
1.38 
1.34 
1.34 
1.38 

1.32 




21 


1.35 
1.38 
1.32 




2 


12 


22 




3 


13 


28 




4.. 


1.35 
1.36 

1.32 
1.32 
1.26 
1.36 


14 


24 




5 


15 


25 


1.38 

1.34 

1.38 
1.32 
1.40 
1.40 




6 


16 


26 




7. 


17 


27 




8 


18 


1.38 
1.38 
1.32 




28 




9 


19 


20 




io!.!!" 


20 


30 












31 













PUMP DITCH NEAR WAIMANALO, OAHTT. 

Location. — Below outlet pipe at pumping plant, about 1^ miles north of plantation 
headquarters; Waimanalo plantation is about 15 miles east of Honolulu. 

Records available. — November 1 to December 31, 1912. 

Gage. — Vertical staff on right bank below pipe outlet; read twice daily, about 7 
a. m. and 5 p. m., by water foreman. 

Channel. — Clean, of stiff clay; permanent; one channel; banks covered with grass 
and small weeds; does not overflow. 

Discharge measurements. — By wading. 

Diversions. — This ditch discharges the water pumped from the Waimanalo Lagoon. 

Cooperation. — Maintained in cooperation with the Waimanalo Plantation Co. 

Discharge measurements of pump ditch near Waimanalo, Oahu, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Oct. 31 




Feet. 
1.28 


Sec.-ft. 
2.44 


Dec. 27 


Larrison and Dort 













Daily gage height, in feet, of pump ditch near Waimanalo, Oahu, for 1912. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 


1.20 
1.22 




11.. 

12.. 
13.. 
14.. 
15.. 

16.. 
17.. 

18.. 

19. 

20.. 








21 






2 




1.30 
1.28 
1.25 




22 




3 




23 




4 .. 


1.26 
1.28 

1.20 






24 






5. 




25 






6 








26 






7 








27 






8 








1.19 
1.30 




28 






9 








29 






10 








30 




















31 















Note. — Pump working 12 hours per day; balance of 24 hours ditch was dry. 



128 WATER RESOURCES OF HAWAII, 1912. 

MISCELLANEOUS MEASUREMENTS ON OAHU IN 1912. 



Date. 


Stream. 


Tributary to— 


Locality. 


Dis- 
charge. 


Aug. 27 
27 


Kahuawai Spring 

do 


Pauoa Stream 


Pauoa Valley 


Sec.-ft. 
0.75 


do 


do 


.83 


Feb. 29 


Pukele Stream 


Palolo Stream 


Below Mahoe Springs, Upper 

Palolo Valley. 

Irwins Flume, Kailua Valley 

Below intake Wong Leong ditch, 

Kailua Valley. 
Flume below intake Kailua Valley. 
Kailua Valley 


.80 


Apr. 5 
5 


Makawao ditch 


(a) 


3.49 






2 21 


5 


Wong Leong ditch 

Box Flume ditch 

KahanaiM Stream 

Waikalua ditch 


(6) 


4.86 


5 


\4 


.61 


5 




Government road bridge, Kailua 
Valley. 

Above box flume, Kaneohe 

Ah T/dflnitifi, TTanenhe, 


.93 


Mar 9 




2.62 


9 


do 

do 

do 




6.78 


9 
9 


do 

Sugar mill, Kaneohe 


8.29 
10.6 


g 


Old Waikalua ditch 




50 feet below intake, Kaneohe 

60 feet below Government road, 

Kaneohe. 
200 feet below Government road, 

Kaneohe. 
Below rice mill, Kaneohe 


1.28 


9 


Kepo ditch 




2.56 


9 


do 




2.66 


9 


Waste ditch... 




.93 


Nov 3 






Intake, Kaneohe 


6 81 


7 


.do 




dol 


6 87 


Aug. 3 
May 24 

24 


Waihi Stream 


Waiahole Stream 

Halona Stream 


Upper Waiahole Valley 


9.40 


North Fork, Halona 

Stream. 
Halona Stream 


do 


.76 


Waiahole Stream 

do 

Wainu Stream 

Waiahole Stream 


do.... 

do 

do 

do 


5.15 


Aug. 3 


do 


4.35 
.58 


4 


Waianu Stream 


9.13 


May 24 


McCandless ditch 


(d) 


Waiahole Valley 


1.30 









a Diverts low-water discharge of headwaters of Makawao and Kaimi streams. 

b Diverts low-water discharge of Kailua Stream. 

c Diverts low-water discharge of Kawainui Stream. 

d Diverts part of low-water discharge of Waiahole Stream. 

ARTESIAN WELLS. 

Artesian wells play an important part in connection with the water 
supply of Honolulu and the irrigation of sugar cane. 

Records have been kept, more or less continuously, of the heads 
of Oahu wells for the past 30 years. During this period the mean 
yearly head has dropped about 15 feet. During the past dry year 
the heads on the wells dropped so low that many wells became 
seriously impregnated with salt, and the supply was reduced to an 
alarming degree! However, this condition brought to the attention 
of the Territorial officials the great waste that has been going on for 
years from this source of supply. Mr. T. F. Sedgwick, who has been 
making an investigation of the Oahu artesian wells, reports that the 
entire supply from this source for the city of Honolulu from Diamond 
Head to Fort Shafter amounted in 1912 to about 55 second-feet, 
and of this about one-third was allowed to waste into the sea. The 
following table shows the monthly fluctuation of the wells under 
investigation during 1912: 



ISLAND OF MAUI. 129 

Height of water {elevation in feet above sea level) in artesian wells on Oahu in 1912. 





























The year. 




Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 




Station. 
































Max. 


Min. 


Government 






























stables 


31.30 


30.91 


31.00 


30.66 


30.10 


29.45 


28.80 


28.65 


28.17 


28.10 


28.22 


28.50 


31.30 


28.10 


Mo Hop 

Lund Do Wai. 


26.20 


24.95 


25.38 


25.14 


24. 03 


24.10 


24.65 


23.47 


22.99 


23.06 


24.51 


25.71 


26.20 


22.99 


26.10 


24.65 


25.20 


24.98 


23.85 


23.92 


24.41 


23.15 


22.70 


22.80 


24.35 


25.65 


26.10 


22.70 


Sing Loy 

Oahu Railway 
& Land Co.. 


31.85 


31.45 


31.60 


31.16 


30.61 


29.85 


29.25 


28.98 


28.50 


28.40 


28.65 


29.24 


31.85 


28.40 


31.90 


32.20 


32.10 


31.44 


31.00 


30.42 


29.47 


29.52 


29.22 


28.82 


29.04 


29.57 


32.20 


28.82 


Ah Yin 


31.03 


30.91 


30.87 


30.64 


29.96 


29.11 


28.81 


28.35 


28.11 


27.70 


28.16 


28.75 


31.03 


27.70 


Young Hotel 






























Gardens 


29.68 


28.95 


28.73 


29.18 


28.78 


28.29 


27.38 


27.33 


27.13 


27.18 


27.53 


28.27 


29.68 


27.13 


Mr. Damon's.. 


27.42 


27.42 


27.60 


27.38 


26.46 


25.96 


25.62 


25.25 


25.16 


24.88 


25.34 


26.17 


27.60 


24.88 


Waimalu 


22.75 


22.37 


22.47 


22.42 


21.08 


20.53 


20.22 


19.92 


19.62 


19.95 


20.92 


21.22 


22.75 


19.62 


SingChong.... 
Waipahu 


19.25 


19.55 


19. 45 


19.20 


18.10 


18.19 


17.45 


17.15 


16.95 


16.90 


17.10 


18.49 


19.55 


16.90 


20.67 


21.80 


21.22 


20.42 


19.35 


18.60 


18.22 


18.12 


17.92 


17.63 


18.12 


19.22 


21.80 


17.63 


Honouliuli 


22.27 


22.30 


22.29 


21.89 


20.84 


20.18 


19.79 


19.36 


19.02 


18.89 


19.65 


20.89 


22.30 


18.89 


Waialua 


12.52 


12. 47 


12.42 


12.14 


12.02 


11.97 


11.72 


11.62 


11.46 


11.45 


11.67 


12.12 


12.52 


11.45 


Kahukua 


1.66 


1.62 


1.23 


1.46 


.51 


.62 


.54 


.56 


.29 


.61 


.96 


1.00 


1.66 


.29 


Hauula 


21.27 


21.15 


20.80 


20.96 


20.37 


19.96 


19.37 


20.08 


19.57 





19.76 


20.20 







Oahu College &. 


/31. 65 
\31. 55 


31.50 


31.60 


31.40 


30.90 


30.38 


29.70 


29.25 


28.90 


*28.'40 


28.52 


29.25 


hi. 65 


28.25 


31.40 


31.50 


31.03 


30.50 


29.70 


29.35 


28.92 


28.47 


28.25 


28.25 


28.52 


Beretania 


/31. 66 
\31.41 


31.52 


31. 56 


31.39 


30.83 


30.43 


29.68 


29.31 


28.98 


J28.33 


/28. 54 
\28.44 


29. 12 


J31. 66 


28.33 


street pump t> 


31.37 


31.43 


31.00 


30.43 


29.79 


29.27 


28.96 


28. 8^ 


28.65 



a B. M. unsatisfactory; height taken above flange on well. & Maximum and minimum for month. 

ISLAND OF MAUI. 

West Maui. 

KAHAKULOA STREAM BASIN. 

KAHAKULOA STREAM AT KAHAKULOA, NEAR WAIHEE, MAUI. 

Location. — About 13 miles northwest of Wailuku at trail bridge of Kahakuloa, 

below all diversions. 
Records available. — August 27 to December 31, 1912. 
Drainage area. — Not measured. 
Gage. — Staff; datum unchanged. 
Channel. — Probably permanent. 
Discharge measurements. — Made by wading. 
Accuracy. — Good . 

Discharge measurements of Kahakuloa Stream at Kahakuloa, near Waihee, Maui, in 1912. 

[Hydrographer, J. B. Stewart.] 



Date. 


Gage 


Dis- 


Date. 


Gage 


Dis- 


height. 


charge. 


height. 


charge. 




Feet. 


Sec.-ft. 




Feet. 


Sec.-ft. 


Aug. 13 


0.82 


13.4 


Oct. 1 


0.75 


10.0 


15 


1.10 


25.5 


4 


.90 


14.1 


28 


.60 


5.25 


30 


1.40 


47.7 


Sept. 14 


.60 


4.08 


- 







14694°— wsp 336—14 9 



130 WATER RESOURCES OF HAWAII, 1912. 

Daily gage height, in feet, of Kahahuloa Stream at Kahdkuloa, near Waihee, Maui, for 1912. 



Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.65 
.95 
.70 
.62 
.60 

.65 
.78 
.68 

.60 


0.78 

1.05 

.78 

.62 

.60 

.60 
.60 
.60 
.60 
.62 

.68 

.83 

1.15 

1.12 

1.52 


0.72 
.68 
.70 
.65 
.60 

.60 
.60 
.60 

1.78 
.75 

.65 
.58 
.58 
.60 
.62 


1.00 

.72 

1.45 

.75 

.68 

.65 
.95 
.80 

.78 
.68 

.60 
.60 
.60 

.65 
.60 


16 




0.55 

.55 
.55 
.55 
.60 

.60 
.58 
.58 
.55 
.55 

.55 
.55 
.60 
.70 

.88 


0.78 
.65 
.60 
.60 
.60 

.82 
1.02 
.85 
.68 
.65 

.70 
.70 
1.08 
.70 
.80 
.88 


1.58 

1.05 

.90 

.82 

.82 

.95 
.85 
.78 
.70 
.62 

.68 
.65 
.60 
.60 
.95 


0.88 


2 




17 




.62 


3 




18 




.60 


4 




19 




.62 


5 




20 




.62 


6 




21 




.60 


7 




22 




1.12 


8 




23 




.75 


9. .. 




24. . 




.68 


10 




.60 

.60 
.60 

.60 
.60 
.60 


25 




.65 


11 




26 




.60 


12 




27 


0.60 
.60 
.68 
.65 
.65 


.60 


13 




28 , 


.60 


14 




29 


.68 


15 




30 


.68 






31 


.60 









Daily discharge, in second-feet, of Kahahuloa Stream at Kahahuloa, near Waihee, Maui, 

for 1912. 



Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




6.5 
17.5 
8.0 
5.6 
5.0 

6.5 
10.4 
7.4 
5.0 
5.0 

5.0 
5.0 
5.0 
5.0 
5.0 


10.4 

23.0 

10.4 

5.6 

5.0 

5.0 
5.0 
5.0 
5.0 
5.6 

7.4 
12.2 
29.0 
27.2 
56.6 


8.6 
7.4 
8.0 
6.5 
5.0 

5.0 
5.0 
5.0 
77.4 
9.5 

6.5 
4.6 
4.6 
5.0 
5.6 


20.0 

8.6 

51.0 

9.5 

7.4 

6.5 
17.5 
11.0 
10.4 

7.4 

5.0 
5.0 
5.0 

6.5 
5.0 


16 




4.0 
4.0 
4.0 
4.0 
5.0 

5.0 
4.6 
4.6 
4.0 
4.0 

4.0 
4.0 
5.0 
8.0 
14.2 


10.4 
6.5 
5.0 
5.0 
5.0 

11.8 
21.2 
13.0 
7.4 
6.5 

8.0 
8.0 
24.8 
8.0 
11.0 
14.2 


61.4 
23.0 
15.0 
11.8 
11.8 

17.5 
13.0 
10.4 
8.0 
5.6 

7.4 
6.5 
5.0 
5.0 
17.5 


14.2 


2 




17 




5.6 


3 




18 




5.0 


4 




19 




5.6 


5 




20 




5.6 


6 




21 




5.0 


7 




22 




27.2 


8 




23 * 




9.5 


9 




24 




7.4 


10 




25 




6.5 


11 




26 




5.0 


12 




27 


5.0 
5.0 
7.4 
6.5 
6.5 


5.0 


13 




28 


5.0 


14 




29 


7.4 


15 




30 


7.4 






31 


£.0 









Monthly discharge of Kahahuloa Stream at Kahahuloa, near Waihee, Maui, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


August 


7.4 
17.5 

56.6 
77.4 
51.0 


5.0 
4.0 
5.0 
4.6 
5.0 


6.08 
6.01 
12.20 
12.70 
9.75 


60.3 
358.0 
750.0 
756.0 
600.0 


B. 




B. 


October 


B. 




B. 




B. 






The period 








2,520.0 















WAIHEE STREAM BASIN. 
WAIHEE STREAM AT DAM NEAR WAIHEE, MAUI. 

Location. — About 2 J miles west of Waihee at intake of Waihee canal. 
Records available. — November 17, 1910, to December 31, 1912. 
Gage. — Vertical staff; read twice daily; datum unchanged. 
Channel. — Crest of concrete diversion dam. 



ISLAND OF MAUI. 



131 



Discharge measurements. — Made by wading and from footbridge. To get total 
flow of Waihee Stream add flow of Waihee canal to discharge at this station. 

Accuracy. — Records at this point show amount of water passing over the diversion 
dam and do not include flow in Waihee canal. 

The following discharge measurement was made by C. T. Bailey: 
December 1, 1912: Gage height, 0.49 foot; discharge, 59.2 second-feet. 



Daily gage height, in feet, of Waihee Stream at dam near Waihee, Maui, for 1912, 
[Joaquin Santos, observer.] 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug, 


Sept. 


Oct. 


Nov. 


0.20 


0.00 


0.15 


0.50 


0.60 


0.20 











0.35 





.20 


.0 


.70 


.70 


.40 


.20 


0.05 





0.30 








.10 


.0 


.25 


.60 


.40 


.15 


.05 








.55 





.00 


.0 


.40 


1.55 


.30 


.15 


.10 








.50 





.00 


.0 


.50 


2.20 


.50 


.20 


.30 














.00 


.0 


.35 


1.15 


.70 


.10 

















.00 


.0 


.60 


1.30 


.20 


.25 


.15 





.30 








.00 


.0 


.50 


.60 


.30 


.15 


.30 














.10 


.0 


.40 


.60 


.20 


.10 


1.20 


.20 








1.10 


.15 


.0 


.35 


.70 


.20 


.10 


2.15 














.10 


.0 


.40 


1.50 


.20 


1.00 


1.10 


.20 





.40 





.00 


.0 


.40 


.70 


.15 


.70 


.90 


.20 





.55 





.00 


.40 


.40 


.35 


.05 


.70 


.85 


.25 





.12 





.00 


.10 


.20 


.50 


.00 


.40 


.50 


.40 





.15 





.00 


.10 


.20 


.50 


.00 


.30 





.50 





.40 


.50 


.00 


.10 


.50 


.70 


.00 


.70 


.25 


.40 





.00 


1.50 


.0 


.10 


1.55 


.70 


.0 


.40 














.70 


.0 


.20 


1.60 


.75 


.0 


.30 














1.25 


.0 


1.00 


1.20 


.85 


.05 


.50 

















.0 


.70 


1.10 


.50 


.0 


.10 














.60 


.0 


.60 


.80 


.50 


.0 


.15 


.25 


.40 





.60 


.85 


.0 


.70 


.85 


.60 


.0 


.20 





.40 





.40 





.0 


.70 


.75 


.50 


.05 


.20 














.20 


.0 


.65 


.60 


.40 


.05 


.20 


.10 











.50 


.0 


.60 


.50 


.40 


.0 


.20 














.25 


.0 


.60 


.10 


.60 


.15 


.10 





.60 








.25 


.0 


.50 


.30 


.50 


.85 


.10 











.05 


.25 


.0 


.20 


.60 


.50 


.65 














.25 


.25 


.0 


.10 


.40 


.40 


.50 

















.25 


.0 




.50 


.40 


.40 

















.45 


.0 




.50 




.25 












.22 





Dec. 



1 
2 
3 

4 
5 

6 
7 
8 
9 
10 

11 
12 
13 
14 

15 

16 

17 

18 
19 
20 

21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



0.55 
.40 

1.20 



.35 

.40 













.40 


.45 





.10 






.55 
.05 
.20 
.05 



Daily discharge, in second-feet, of Waihee Stream at dam near Waihee, Maui, for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


12.0 





8.3 


53.0 


71.0 


12.0 











29.0 





12.0 





90.0 


90.0 


36.0 


12.0 


2.3 





22. 








4.6 





17.0 


71.0 


36.0 


8.3 


2.3 








62.0 











36.0 


275.0 


22.0 


8.3 


4.6 








53.0 











53.0 


435.0 


53.0 


12.0 


22.0 




















29.0 


184.0 


90.0 


4.6 























71.0 


217.0 


12.0 


17.0 


8.3 





22. 














53.0 


71.0 


22.0 


8.3 


22.0 














4.6 





36.0 


71.0 


12.0 


4.6 


195.0 


12.0 








173.0 


8.3 





29.0 


90.0 


12.0 


4.6 


422.0 














4.6 





36.0 


263.0 


12.0 


152.0 


173.0 


12.0 





36.0 











36.0 


90.0 


8.3 


90.0 


131,0 


12.0 





62.0 








36.0 


36.0 


29.0 


2.3 


90.0 


120.0 


17.0 





6.1 








4.6 


12.0 


53.0 





36.0 


53.0 


36.0 





8.3 








4.6 


12.0 


53.0 





22.0 





53.0 





36.0 


53.0 





4.6 


53.0 


90.0 





90.0 


17.0 


36.0 








263.0 





4.6 


275.0 


90.0 





36.0 














90.0 





12.0 


287.0 


100.0 





22.0 














206.0 





152.0 


195.0 


120.0 


2.3 


53.0 




















90.0 


173.0 


53.0 





4,6 














71.0 



Dec. 



1 

2 
3 

4 

5. 

6 

7. 
8 
9 
10, 

11 
12 
13 
14 
15 

16 

17, 
18 
19 



62.0 

36.0 

195.0 





29.0 
36.0 



36.0 


44.5 





132 

Daily discharge, in second-feet, of Waihee Stream at dam near Waihee, Maui, for 1912 — 

Continued. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



71.0 
90.0 
90.0 
80.5 
71.0 

71.0 

53.0 

12.0 

4.6 



110.0 

120.0 

100.0 

71.0 

53.0 

4.6 
22.0 
71.0 
36.0 
53.0 
53.0 



53.0 
71.0 
53.0 
36.0 
36.0 

71.0 
53.0 
53.0 
36.0 
36.0 







2.3 

2.3 



8.3 

120.0 
80.5 
53.0 
36.0 
17.0 



8.3 
12.0 
12.0 
12.0 
12.0 



17.0 





4.6 












71.0 








71.0 

36.0 








2.3 

17.0 



14.0 



120.0 



12.0 

53.0 

17.0 

17.0 

17.0 
17.0 
17.0 
44.5 





4.6 







62.0 

2.3 

12.0 

2.3 



Monthly discharge of Waihee Stream at dam near Waihee, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. 



Minimum. 



Mean. 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



12.0 

152.0 

287.0 

435.0 

120.0 

152.0 

422.0 

71.0 

22.0 

71.0 

263.0 

195.0 



435.0 



0.0 
.0 

4.6 
29.0 
.0 
.0 
.0 
.0 
.0 
.0 
.0 
.0 



1.49 
29.40 
72.00 
99.90 
22.90 
25.10 
38.50 
10.40 

1.47 
14.00 
39.00 
16.80 



30 J 



91.6 
1,690.0 
4,430.0 
5,940.0 
1,410.0 
1,490.0 
2,370.0 

640.0 
87.5 

861.0 
2,320.0 
1,030.0 



22,400 



WAIHEE CANAL NEAR WAIHEE, MATTI. 

Location. — About 2 miles west of Waihee and one-half mile below canal intake; 5$ 

miles above Wailuku. 
Records available. — November 17, 1910, to December 31, 1912. 
Gage. — Vertical staff; read twice daily, at 6 a. m. and 6 p. m.; datum unchanged. 
Channel. — Cement lined. 
Discharge measurements. — Made from plank at gage. Gage read with diversion 

gate shut. 

Discharge measurements of Waihee canal near Waihee, Maui, in 1912. 
[Hydrographer, J. B. Stewart.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 1 
height. 


Dis- 
charge. 


March 7 


Feet. 
1.85 
2.15 
1.82 


Sec-ft. 
41.6 
55.7 
45.6 


September 7 


Feet. 
1.85 
1.60 


Sec-ft. 
52 A 


July 3 


October 29 


41.4 


August 6 











ISLAHD OF MAUI. 



133 



Daily gage height, in feet, of Waihee canal near Waihee, Maui, for 1912. 
[Joaquin Santos, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1. 


2.20 

2.20 
2.20 
2.15 
2.10 

2.10 
2.10 
2.10 
2.10 
2.10 

2.10 
2.10 
2.10 
2.10 
2.10 

2.10 
2.10 
2.10 
2.10 
2.10 

2.10 

2.10 
2.10 
2.00 
2.00 

2.00 
2.00 
1.90 
1.90 
1.90 
1.90 


1.90 
1.90 
1.90 
1.90 
1.90 

1.90 
1.90 
1.90 
1.90 
1.90 

1.90 

1.90 
2.20 
2.20 
2.20 

2.20 
2.20 
2.20 
2.20 
2.20 

2.20 
2.20 
2.60 
2.60 
2.40 

2.40 
2.20 
2.20 
2.20 


2.20 
2.20 
2.20 
2.15 
2.15 

2.20 
2.20 
2.40 
2.40 
2.40 

2.30 
2.20 
2.20 
2.20 
2.40 

2.30 
2.30 
2.20 
2.15 
2.15 

2.10 
2.20 
2.20 
2.20 
2.15 

2.10 
2.10 
2.10 
2.10 
2.05 
2.10 


2.30 
2.15 
2.20 
2.20 
2.20 

2.20 
2.20 
2.20 
2.20 
2.30 

2.20 
2.15 
2.15 
2.15 
2.10 

2.50 
2.50 
2.40 
2.30 
2.30 

2.20 

2.20 
2.30 
2.30 
2.10 

2.20 
2.20 
2.30 
2.20 
2.20 


2.15 
2.20 
2.50 
2.40 
2.55 

2.30 
2.15 
2.20 
2.20 
2.10 

2.00 
2.00 
1.90 
1. 95 
1.90 

1.90 
1.90 
1.90 
1.90 
1.90 

1.90 
2.05 
2.10 
2.15 
1.95 

2.05 
2.10 
2.65 
2.40 
2.30 
2.40 


2.10 
2.10 
2.10 
2.10 
2.10 

2.10 
2.10 
2.10 
2.10 
2.10 

2.40 
2.40 
2.50 
2.50 
2.50 

2.40 
2.20 
2.20 
2.10 
2.05 

2.10 
2.10 
2.10 
2.15 
2.20 

2.20 
2.15 
2.25 
2.15 
2.15 


2.10 
2.15 
2.20 
2.20 
2.25 

2.25 
2.25 
2.25 
2.40 
2.30 

2.40 
2.40 
2.40 
2.40 
2.05 

2.15 
2.00 
2.00 
2.05 
1.95 

2.25 

2.05 
1.90 
2.15 
1.90 

1.90 
2.05 
1.80 
1.90 
1.80 
1.80 


1.80 
1.80 
1.80 
1.80 
1.90 

1.80 
1.80 
1.80 
2.20 
1.95 

2.25 
2.30 
2.40 
2.25 
2.30 

2.35 
2.05 
2.00 
1.85 
1.80 

0.00 
2.20 

1.80 
1.85 
1.85 

2.05 
1.70 
1.75 
1.90 
1.85 
1.70 


1.70 
2.30 
1.70 
1.70 
1.85 

1.70 
1.95 
1.70 
1.65 
1.65 

1.40 
1.60 
1.60 
1.60 
1.60 

1.60 
1.60 
1.70 
1.80 
1.70 

1.60 
1.60 
1.60 
1.65 
1.65 

1.75 
1.65 
1.85 
1.80 
1.60 


2.00 
1.75 
2.00 
2.10 
1.75 

1.60 
1.65 
1.60 
1.70 
1.65 

2.05 
1.95 
2.15 
2.00 
2.10 

1.75 
1.95 
1.85 
1.65 
1.60 

2.15 

2.25 
2.15 
1.80 
1.65 

1.95 

2.10 
2.00 
1.60 
1.60 


1.65 
1.60 
1.60 
1.70 
1.60 

1.60 
1.60 
1.75 
2.30 
1.85 

1.65 
1.60 
1.55 
1.50 
1.85 

2.30 
2.25 
1.10 
1.90 
2.25 

2.30 

2.10 

2.20 

.00 

.85 

.80 
.80 
.80 
.80 
2.00 




2 


6.85 


3 


1.80 


4 


1.70 


5 


1.70 


6 


2.00 


7. 


2.10 


8 


1.65 


9 


1.60 


10 


1.60 


11 


1.60 


12 


1.60 


13 


1.60 


14 


1.60 


15 


1.60 


16 


1.95 




1.60 


18 


1.75 




1.85 


20 


1.70 


21 


1.70 




1.60 


23 


1.90 


24 


1.60 


25 


1.80 


26 


1.70 




1.60 


28 


1.90 




1.80 


30 


2.00 




1.80 













Note. — On July 27 a small board was substituted for a larger one in the canal below the gage; gage height 
of 1.7, beginning July 27, equivalent to 1.8 before that date. 

WAIHEE CANAL AT WEIR NEAR WAILUKU, MAUI. 

Location. — About half a mile above Wailuku and about 1,000 feet below the inverted 

siphon crossing Iao Valley. 
Records available. — January 1, 1911, to December 31, 1912. 
Discharge. — Measured by 14-foot sharp-crested weir, without end contractions. 
Cooperation. — Records furnished by Hawaiian Commercial & Sugar Co. 

Daily discharge, in million gallons, of Waihee canal at weir near Wailuku, Maui, for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1. 
2. 
3. 
4 
5 

6 

7 
8 
9 
10 

11 
12 
13 
14 
15 



19.80 
16.80 
16.10 
15.10 
14.30 

13.40 
14.60 
18.40 
16.40 
15.50 

15.40 
13.30 
13.70 
14.40 
14.80 



11.40 
12.90 
17.40 
14.40 
13.70 

12.70 
12.50 
11.70 
11.60 
10.60 

13.00 
11.50 
23.30 
18.30 
12.40 



19.30 
19.00 
21.40 
17.90 
17.60 

19.10 
21.80 
13.40 
21.00 
24.70 

17.70 
18.60 
18.20 
17.90 
14.70 



22.40 
28.60 
37.40 
39.20 
26.10 

33.00 
40. 10 
29.80 
27.70 
28.20 

29.30 
42.00 
26.60 
56.40 
28.90 



19.80 
26.10 
24.30 
18.30 
17.60 

18.70 
17.10 
17.10 
18.30 
18.10 

17.20 
17.50 
16.00 
13.30 
13.10 



14.00 
14.50 
13.40 
11.80 
13.10 

12.70 
13.40 
13.30 
13.90 
24.60 

23.70 
19.90 
19.60 
22.80 
23.80 



13.30 
11.40 
11.50 
12.00 
17.00 

15.60 
15.80 
23.80 
32.30 
32.10 

20.40 
23.00 
30.90 
24.90 
15.40 



11.20 
11.40 
11.00 
11.00 
11.30 

11.70 
12.40 
11.70 
11.60 
12.60 

16.10 
13.30 
13.90 
21.10 
20.60 



9.77 
12.70 
13.30 
10.50 
10.20 

11.20 
12.70 
11.00 
11.30 
11.00 

10.80 
10.60 
9.80 
9.00 
9.70 



13.20 
15.90 
11.80 
20.80 
14.20 

11.10 
10.80 
10.80 
10.60 
12.10 

20.00 
22.90 
21.00 
22.70 
13.50 



12.70 
13.30 
10.40 
9.23 
10.20 

9.33 

9.77 

12.40 

33.60 

14.00 

9.93 
9.53 
9.37 
9.67 
16.80 



29.20 
15.20 
34.50 
15.60 
14.30 

19.30 
35.80 
35.40 
19.00 
14.30 

14.00 
13.60 
13.40 
15.40 
14.40 



134 

Daily 



WATER RESOURCES OF HAWAII, 1912. 

e, in million gallons, of Waihee canal at weir near Wailuku, Maui, for 
1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dee. 


16 


13.20 
12.10 
12.70 
12.30 
12.30 

13.00 
10.90 
11.50 
11.50 
11.50 

10.40 
10.10 
9.75 
9.82 
10.80 
11.60 


11.00 
11.30 
11.20 
40.50 
45.40 

22.90 
9.50 
15.00 
16.40 
30.10 

22.00 
22.00 
15.50 
12.30 


17.00 
20.10 
25.40 
22.30 
23.30 

22.30 
18.90 
17.60 
17.30 
17.20 

23.00 
21.60 
22.30 
22.20 
26.60 
29.40 


38.10 
34.00 
28.70 
30.50 
28.30 

26.00 
26.40 
22.10 
21.40 
18.30 

24.50 
17.50 
19.10 
16.60 
16.40 


14.60 
14.30 
14.20 
16.30 
14.30 

15.10 
13.60 
13.20 
18.90 
16.60 

23.20 
30.50 
20.43 
23.20 
16.20 
15.00 


19.30 
13. 80- 
13.90 
12.80 
13.50 

17.10 
14.40 
14.60 
18.50 
13.20 

14.40 
16.00 
13.60 
13.50 
13.50 


16.80 
14.30 
13.70 
14.70 
13.80 

17.90 
14.40 
13.20 
13.20 
11.10 

11.20 
11.70 
12.60 
11.60 
12.10 
11.80 


18.60 
14.10 
11.90 
12.30 
11.30 

9.33 

13.00 
10.80 
9.86 
9.63 

19.70 
16.60 
10.30 
11.60 
10.50 


9.87 
9.60 
11.30 
10.70 
11.50 

10.30 
10.00 
10.10 
8.50 
9.07 

10.20 
10.70 
10.70 
12.00 
20.00 


11.40 
11.90 
11.00 
10.10 
12.70 

12.90 
14.50 
13.30 
11.50 
10.10 

12.30 
16.60 
16.30 
11.20 
12.70 
13.20 


39.40 
29.00 
31.60 
18.10 
27.40 

28.60 
24.10 
12.70 
15.20 
12.40 

12.00 
8.03 
9.33 
9.20 

18.20 


23.30 


17 


13.70 


18 


21.50 


19 


19.10 


20 


12.60 


21 


27.20 


22 


34.10 


23 


22.20 


24 


16.30 


25 


26.00 


26 


17.90 


27 


15.90 


28 


17.30 


29 


13.50 


30 


16.10 


31 


21.70 











Monthly discharge of Waihee canal at weir near Wailuku, Maui, for 1912. 



Month. 


Discharge in million gallons. 


Run-on* 
(total in 


Maximum. 


Minimum. 


Mean. 


million 
gallons). 


January 


19.80 
45.40 
29.40 
56.40 
30.50 
24.60 
32.30 
21.10 
20.00 
22.90 
39.40 
35.80 


9.75 

9.50 

13.40 

16.40 

13.10 

11.80 

11.10 

9.33 

8.50 

10.10 

8.03 

12.60 


13.4 
17.0 
20.3 
28.8 
17.8 
15.9 
16.6 
13.0 
10.9 
14.0 
16.2 
20.1 


415 


February 


492 




629 


April 


864 


May 


552 


June 


477 


July 


514 


August 


390 


September 


328 


October 


433 


November 


485 


December 


622 






The year 


56.40 


8.03 


17.0 


6,200 





SPRECKELS DITCH NEAR WAIHEE, MAUI. 

Location. — About 2 miles west of Waihee and about 500 feet below intake. 

Records available. — November 17, 1910, to December 31, 1912. 

Gage. — Vertical staff; read twice daily, at about 4 a. m. and 3.30 p. m. Septem- 
ber 7, 1912, gage was removed to a point a short distance upstream and placed at 
new datum. 

Channel. — Probably permanent. 

Discharge measurements. — Made by wading. 

Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 

Discharge measurements of Sprechels ditch near Waihee, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 3 
Aug. 6 
Sept. 7 


J.B.Stewart 

do 

do 


Feet. 
0.24 
.15 
.30 


Sec.-ft. 
2.06 
1.01 
2.82 


Oct. 29 
Dec. 1 


J.B.Stewart 

C.T.Bailey 


Feet. 
0.21 
1.66 


Sec.-ft. 
1.67 

58.7 



ISLAND OF MAUI. 



135 



Daily gage height, in feet, of Sprechels ditch near Waihee, Maui, for 1912. 
[Joaquin Santos, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.40 
.40 
.60 
.50 
.30 

.20 
.20 
.20 
.20 
.20 

.15 
.10 
.10 
.10 
.00 

.00 
.00 
.00 
.10 
.10 

.00 
.00 
.00 
.00 
.05 

.10 
.10 
.10 
.10 
.10 
.10 


0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
1.00 
.60 
.60 

.40 
.40 
.60 
1.00 
.70 

.80 
1.20 
1.60 
1.50 

.55 

1.40 
1.40 
1.20 
1.20 


1.30 
1.20 
1.20 
1.20 
1.50 

1.20 
1.00 
1.20 
1.20 
1.20 

1.20 
1.10 
1.10 
1.10 
1.10 

1.25 
1.20 
1.30 
1.10 
1.15 

.80 
.70 
.60 
.40 
.40 

.40 
.80 
.60 
.70 
.50 
.50 


1.25 
1.65 
1.80 
1.70 
1.60 

1.50 
1.70 
1.50 
.95 

.80 

.'80 
.70 
.70 
.80 
.60 

1.90 
1.70 
1.25 
1.10 
. 1.20 

.70 
.60 
.70 
.90 
.70 

.50 
.40 
.70 
.50 
.40 


0.30 
.50 
.60 
.40 
.30 

.40 
.50 
.70 
.60 
.50 

.40 
.35 
.30 
.25 
.20 

.20 
.20 
.20 
.20 
.25 

.15 
.20 
.15 
.15 
.15 

.20 
1.50 
1.70 
1.70 

.80 
1.50 


0.75 
.53 

.20 
.15 
.15 

.10 
.15 

.10 
.10 
.05 

1.50 

1.00 

.90 

.95 

.80 

,.45 
.50 
.30 
.30 
.20 

.50 
.40 
.15 
, .30 
.20 

.20 
.15 
.15 
.10 
.10 


0.10 
.10 
.10 
.15 

1.00 

.62 

.70 

.90 

1.75 

1.05 

1.60 
1.70 
1.60 
1.15 
.20 

.85 
.20 
.20 
.20 
.20 

.60 
.20 
.20 
.45 
.20 

.20 
.22 
.20 
.20 
.20 
.20 


0.20 

.20 
.20 
.20 
.20 

.1$ 
.15 
.20 
.60 
.25 

.60 
.70 
.65 
.90 
1.05 

1.00 
.15 
.15 
.15 
.15 

1.20 

1.45 

.15 

.15 

.15 

.92 
.00 
.00 
.00 
.00 
.15 


0.15 

.15 
.15 
.15 
.15 

.15 
.90 
.10 
.20 
.15 

.15 
.15 
.15 
.15 
.15 

.15 
.15 
.15 
.15 
.15 

.15 
.15 
.15 
.15 
.30 

.15 
.20 

.20 
.15 

.18 


0.92 
.20 
.SO 

1.00 
.18 

.15 
.15 
.15 
.20 
.25 

.90 
.90 
.55 
.65 
1.00 

.20 
.20 
.20 

.18 
.20 

1.35 

1.30 

.20 

.20 

.20 

.20 
.50 

1.00 
.25 
.30 

1.05 


0.20 
.20 
.20 
.20 
.20 

.20 
.20 
.20 

1.80 
.25 

.20 
.20 
.20 
.20 
1.00 

1.80 
1.40 
1.80 
.30 
1.10 

1.75 
.35 

.70 

1.40 

.90 

.80 
.80 
.80 
.80 
1.05 


1.70 


2 


1.10 


3 


1.80 


4 


.40 


5 


.30 


6 


.95 


7 


1.05 


8 


.30 


9 


.40 


10 


.25 


11 


.25 


12 


.20 


13 


.20 


14 


.20 


15 


.20 


16 


1.00 


17 


.30 


18 


1.10 


19 


.45 


20 


.30 


21 


.30 


22 


.30 




.30 


24 


.30 


25 


.40 


26 


.30 


27 


.35 


28 


1.02 


29 


.55 


30 


1.00 


31 


.45 







WAIEHU STREAM BASIN. 
NORTH WAIEHU STREAM NEAR WAILUKU, MAUL* 

Location. — About 2\ miles northwest of Wailuku, 1 mile above Waihee Canal cross- 
ing, and 50 feet above the intake of the North Waiehu ditch. 
Records available. — July 9 to December 31, 1912. 

Gage. — Vertical staff; read twice daily, at 6 a. m. and 4 p. m.; datum unchanged. 
Channel. — Probably shifting; bed of stream of gravel and small bowlders. 
Discharge measurements. — Made by wading. 
Accuracy. — Good . 
Cooperation. — Station is maintained in cooperation with Wailuku Sugar Co. 

Discharge measurements of North Waiehu Stream near Wailuku, Maui, in 1912. 
[Hydrographer, J. B. Stewart.] 



Date. 



July 5 

8 
13 



Gage 
height. 



Feet. 

a 1.10 
.65 
.65 



Dis- 
charge. 



Sec.-ft. 
2.06 
5.51 
5.52 



Date. 



July 16 
Sept. 6 
Oct. 28 



Gage 
height. 



Feet. 
0.63 
.62 

.77 



Dis- 
charge. 



Sec.-ft. 
5.09 
4.13 
8.92 



« Old gage. 



1 This station replaces the two stations formerly maintained on North Waiehu Stream and North 
Waiehu ditch. 



136 WATER RESOURCES OF HAWAII, 1912. 

Daily gage height, in feet, of North Waiehu Stream near Wailuku, Maui, for 1912. 

[E. Soper, observer.] 



Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.60 
.60 
.60 
.60 
.60 

.60 
.60 
.60 
.60 
.60 

.62 
.64 
.61 
.62 
.64 


0.60 
.62 
.60 
.60 
.60 

.60 
.61 
.60 
.60 
.60 

.60 
.60 
.60 
.60 
.60 


0.60 
.68 
.62 
.88 
.65 

.65 
.65 
.65 
.65 

.65 

.64 
.70 

.74 
.75 
.70 


0.65 
.65 
.65 
.65 
.65 

.65 
.62 
.66 
.70 
.65 

.62 
.62 
.62 
.62 
.62 


0.72 
.70 

.78 
.70 
.68 

.60 
.65 
.60 

.60 
.60 

.60 
.60 
.60 

.60 
.CO 


16 


0.60 
.60 
.60 
.62 
.60 

.60 
.60 
.60 

.60 
.60 

.60 
.60 
.60 
.60 

.60 
.60 


0.62 
.60 
.60 
.60 
.60 

.60 
.65 
.60 
.60 
.60 

.60 
.60 
.60 
.60 
.60 
.60 


0.60 
.60 
.60 
.60 
.60 

.60 
.60 
.65 
.60 
.60 

.62 
.61 
.68 
.61 
.60 


0.65 
.65 
.65 
.65 
.65 

.66 
.70 
.68 
.65 
.65 

.65 
.70 
.68 
.65 
.65 
.65 


0.80 
.70 
.70 

.65 
.75 

.70 
.70 
.70 
.70 
.70 

.70 
.65 
.65 
.65 

.78 


0.60 


2 




17 


.68 


3 




18 


.60 


4 




19 


.60 


5 




20 


.60 


6 




21 


.61 


7 




22 


.60 


8 




23 


.60 


9 

10 

11 

12.... 

13 

14 

15 


0.70 
.68 

.65 
.65 
.68 
.65 
.60 


24 

25 

26 

27 

23 

29 

30 

31 


.60 
.60 

.60 
.60 
.60 
.60 
.60 
.60 









Daily discharge, in second-feet, of North Waiehu Stream near Wailuku, Maui, for 1912. 



Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




4.2 
4.2 
4.2 
4.2 
4.2 

4.2 
4.2 
4.2 
4.2 
4.2 

4.7 
5.2 
4.5 

4.7 
5.2 


4.2 
4.7 
4.2 
4.2 
4.2 

4.2 
4.4 
4.2 
4.2 
4.2 

4.2 
4.2 
4.2 
4.2 
4.2 


4.2 
6.3 
4.7 
13.2 
5.5 

5.5 
5.5 
5.5 
5.5 
5.5 

5.2 
6.8 
8.1 
8.4 
6.8 


5.5 
5.5 
5.5 
5.5 
5.5 

5.5 
4.7 
5.8 
6.8 
5.5 

4.7 
4.7 

4.7 
4.7 
4.7 


7.4 
6.8 
9.4 
6.8 
6.3 

4.2 
5.5 
4.2 

4.2 
4.2 

4.2 
4.2 
4.2 
4.2 
4.2 


16 


4.2 
4.2 
4.2 
4.7 
4.2 

4.2 
4.2 
4.2 
4.2 
4.2 

4.2 
4.2 
4.2 
4.2 
4.2 
4.2 


4.7 
4.2 
4.2 
4.2 
4.2 

4.2 
6.5 
4.2 
4.2 
4.2 

4.2 
4.2 
4.2 
4.2 
4.2 
4.2 


4.2 
4.2 
4.2 
4.2 
4.2 

4.2 
4.2 
5.5 
4.2 
4.2 

4.7 
4.5 
6.3 
4.5 

4.2 


5.5 

5.5 
5.5 
5.5 
5.5 

5.8 
6.8 
6.3 
5.5 
5.5 

5.5 
6.8 
6.3 
5.5 
5.5 
5.5 


10.0 
6.8 
6.8 
5.5 
8.4 

6.8 
6.8 
6.8 
6.8 
6.8 

6.8 
5.5 

5.5 
5.5 
9.4 


4.2 


2 




17 


6.3 


3 




18 


4.2 


4 




19 


4.2 


5 




20 


4.2 


C 




21 


4.5 


7 




22 


4.2 


8 




23 


4.2 


9 

10 

11 

12 

13 

14 

15 


6.8 
6.3 

5.5 
5.5 
6.3 
5.5 
4.2 


24 

25 

26 

27 

28 

29... 

30 

31 


4.2 
4.2 

4.2 
4.2 
4.2 
4.2 
4.2 
4.2 









Monthly discharge of North Waiehu Stream near Wailuku, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. 



Minimum. 



Mean. 



Run-off 

(total in 

acre-feet). 



Accu- 
racy. 



July.' 

August 

September. 
October... 
November. 
December. 



5.5 
6.3 
13.2 
10.0 
9.4 



4.2 
4.2 
4.2 
4.2 
4.7 
4.2 



4.69 
4.36 
4.40 
6.10 
6.12 
4.83 



214.0 
268.0 
262.0 
375.0 
364.0 
297.0 



The period. 



1,780.0 



SOUTH WAIEHU STREAM NEAR WAILUKU, MAUI.i 

Location. — About 1£ miles northwest of Wailuku and 75 feet below diversion dam 

for South Waiehu ditch. 
Records available. — July 10 to December 31, 1912. 

Gage. — Inclined-staff gage; read daily, at 5 a. m. and 5 p. m.; datum unchanged 
Channel. — Shifting. 



i This station replaces the one formerly maintained at the diversion dam. 



ISLAND OF MAUI. 



137 



Discharge measurements. — Made by wading. 

Accuracy. — A discharge rating has not yet been obtained. 

Cooperation. — Station maintained in cooperation with Wailuku Sugar Co. 

Discharge measurements of South Waiehu Stream near Wailuku, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 10 
16 


J. B. Stewart 


Feet. 

0.30 

.28 

.33 

.34 


Sec.-ft. 
0.20 


...do 


.15 


Sept. 6 
Dec. 1 


do 


.20 


C. T. Bailey 


.20 









Daily gage height, in feet, of South Waiehu Stream near Wailuku, Maui, for 1912. 



Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.40 
.45 
.48 
.45 
.45 

.45 
.45 
.45 
.50 
.50 

.55 
.55 
.45 
.52 
.60 


0.40 
.65 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 


0.40 

.65 
.45 
.60 
.45 

.45 
.42 
.40 
.40 
.40 

.40 
.40 
.55 
.50 
.40 


0.40 
.40 
.40 
.40 
.40 

.40 
.40 
.40 

.80 

.48 

.40 
.40 
.40 
.40 
.50 


0.40 
.40 

.85 
.40 
.40 

.60 
.90 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 


16 


0.45 
.45 
.40 
.40 
.40 

.40 
.52 
.42 
.40 
.40 

.52 
.45 
.45 
.45 
.45 
.40 


0.40 
.40 
.40 
.40 
.40 

.40 
.50 
.45 
.45. 
.45 

.45 
.40 
.40 
.40 

.40 


0.40 

.40 
.40 
.40 
.40 

.60 
.48 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 
.40 


0.80 
.48 
.75 
.40 
.48 

.60 
.45 
.40 
.40 
.40 

.40 

.40 
.40 
.40 
.40 


0.75 


2. 


17 


.45 


3. . 


18 


.40 


4... 


19 


.40 


5... 


20 


.40 


6 


21 


.45 


7 


22 


- .52 


8 


23 


.40 


9 


24 


.40 


10 


25 


.40 


11 


26 


.40 


12 


27 


.40 


13 


28 


.40 


14 


29 


.40 


15 


30 


.40 




31 


.40 









IAO STREAM BASIN. 

IAO STREAM NEAR WAILUKU, MAUI. 

Location. — About 3 miles west of Wailuku and one-fourth mile below the forks of 

the stream. 
Records available.— May 7, 1910, to December 31, 1912. 
Drainage area. — Not mapped. 
Gage. — Friez clock register; datum unchanged. 

Channel. — Rough; several changes in control since station was established. 
Discharge measurements. — Made by wading and from cable and car at gage. 
Accuracy. — Records very good. 

Discharge measurements cf Iao Stream near Wailuku, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 15 


J.B.Stewart 


Feet. 
2.90 
2.78 


Sec.-ft. 
38.5 


Aug. 30 


do 


24.9 









138 



Daily gage height, in feet, of Iao Stream near Wailuku, Maui, for 1912. 
[F. G. Duarte, observer.) 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


2.82 
2.80 
2.78 
2.73 
2.72 

2.67 
2.73 
3.00 
2.80 
2.70 

2.67 

2.68 
2.70 
2.68 
2.67 

2.66 
2.66 
2.66 
2.65 
2.65 

2.64 
2.63 
2.63 
2.71 
2.65 

2.63 

2.65 
2.67 
2.66 
2.74 
2.78 


2.70 
3.30 
3.20 
3.02 
2.98 

2.90 

2.87 
2.86 
2.84 
2.91 

3.04 
2.93 
3.04 
2.99 
2.96 

2.97 
2.98 
2.90 
4.22 
4.10 

3.92 
3.60 
3.53 
3.51 
3.33 

3.60 
4.25 
3.77 
3.30 


3.69 
3.95 
3.94 
3.46 
3.42 

3.43 

3.48 
3.25 
3.82 
3.85 

4.36 

4.20 
3.98 
3.53 
3.28 

3.14 
3.47 
3.64 
3.46 
3.42 

3.38 
3.19 
3.10 
3.02 
3.14 

3.13 
3.08 
3.26 
3.30 
3.90 
3.76 


3.54 
3.63 
3.78 
4.43 
4.62 

3.84 
4.20 
3.92 
3.52 
3.38 

3.48 
3.73 
3.38 
3.74 
3.34 

3.68 
3.44 
3.24 
3.17 
3.39 

3.38 

3.27 
3.26 
3.17 
3.08 

3.25 

3.08 
3.02 
2.99 
2.99 


2.98 
2.98 
2.94 
2.92 
3.22 

3.08 
3.08 
3.22 
3.08 
3.16 

3.12 
2.90 
2.90 

2.88 
2.87 

2.90 

2.88 
2.90 
2.87 
2.81 

2.82 
2.77 
2.76 
3.02 
2.85 

3.25 
3.35 
3.18 
3.10 
3.05 
2.98 


2.90 
2.85 
2.82 
2.80 
2.79 

2.79 

2.85 
3.02 
2.85 
3.08 

3.05 
3.02 
2.98 
3.10 
3.10 

2.98 
2.98 
2.85 
2.82 
2.80 

2.95 
2.81 
3.04 
3.00 
2.81 

2.78 
2.73 
2.71 
2.70 
2.67 


2.71 
2.72 
2.74 
2.78 
2.78 

2.72 
2.82 
3.25 
3.65 
3.17 

3.18 
3.32 
3.29 
3.05 
2.92 

2.93 

2.87 
2.81 
2.80 
2.81 

3.02 
2.92 
2.85 
2.90 
2.83 

2.83 
2.84 
2.71 
2.72 
2.67 
2.65 


2.65 
2.68 
2.68 
2.65 
2.62 

2.65 
2.80 
2.75 
2.85 
2.90 

2.95 
2.87 
2.85 
2.98 
3.35 

3.10 

2.88 
2.80 
2.78 
2.78 

2.77 
2.95. 
2.78 
2.73 
2.68 

3.17 
2.95 
2.79 
2.82 
2.77 
2.72 


2.68 
2.90 
2.72 
2.78 
2.70 

2.85 
3.00 
2.78 
2.78 
2.72 

2.68 
2.66 
2.62 
2.60 
2.61 

2.61 
2.67 
2.65 
2.70 
2.75 

2.68 
2.58 
2.62 
2.58 
2.57 

2.75 
2.78 
2.93 
3.19 
3.01 


2.92 
3.02 
2.80 
3.09 
2.95 

2.80 
2.85 
2.79 
2.78 
2.82 

3.02 
3.03 
3.08 
3.45 
3.02 

2.90 
2.85 
2.81 
2.72 
2.68 

2.85 
3.00 
2.88 
2.80 
2.78 

2.95 
3.10 
3.05 
2.80 
2.88 
3.15 


2.81 
2.78 
2.72 
2.70 

2.68 

2.68 
2.71 
3.00 
3.89 
3.07 

3.00 
2.90 
2.84 
2.82 
2.88 

4.02 
3.61 
3.62 
3.28 
3.42 

3.60 
3.25 
3.12 
2.92 
2.83 

2.80 
2.78 
2.75 
2.72 
3.00 


2.95 


2 


2.88 


3 


3.25 


4 


2.95 


5 


2.85 


6 


2.95 


7 


3.21 


8 


3.08 


9 


2.95 


10 


2.88 


11 


2.82 


12 


2.80 


13 


2.80 


14 


2.85 


15 


2.80 


16 


2.85 


17 


2.81 


18 


3.14 


19 


3.07 


20 


2.93 


21 


3.30 


22 


3.32 


23 


3.32 


24 


3.03 


25 


3.24 


26 


3.17 


27 


2.98 


28 


3.05 


29 


2.94 


30 


2.98 


31 


2.95 







Daily discharge, in second-feet, of Iao Stream near Wailuku, Maui, for 1912. 



Day. 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 



31.2 
30.0 
28.8 
25.8 
25.2 

22.5 
25.8 
43.0 
30.0 
24.0 

22.5 
23.0 
24.0 
23.0 
22.5 

22.0 
22.0 
22.0 
21.5 
21.5 

21.0 
20.5 
20.5 
24.6 
21.5 

20.5 
21.5 
22.5 
22.0 
26.4 
28.8 



24.0 
67.0 
58.0 
44.4 
41.6 

36.0 
34.2 
33.6 
32.4 
36.7 

45.8 
38.1 
45.8 
42.3 
40.2 

40.9 

40.2 

36.0 

203.0 

178.0 

145.0 

100.0 

91.6 

89.2 

70.0 

100.0 

210.0 

123.0 

67.0 



112.0 

150.0 

149.0 

83.6 

79.2 

80.3 
85.8 
62.5 
130.0 
134.0 

235.0 

199.0 
156.0 
91.6 
65.2 

53.2 
84.7 
105.0 
83.6 
79.2 

75.0 

67.2 
50.0 
44.4 
53.2 

52.4 
48.6 
63.4 
67.0 
142.0 
121.0 



92.8 
104.0 
124.0 
252.0 
302.0 

133.0 

199.0 

145.0 

90.4 

75.0 

85.8 
117.0 

75.0 
119.0 

71.0 

110.0 
81.4 
61.6 
65.6 
76.0 

75.0 
64.3 
63.4 
55.6 
48.6 

62.5 
48.6 
44.4 
42.3 
42.3 



41.6 
41.6 
38.8 
37.4 
59.8 

48.6 
48.6 
69.8 
48.6 
54.8 

51.6 
36.0 
36.0 
34.8 
34.2 

36.0 
34.8 
36.0 
34.2 
30.6 

31.2 
28.2 
27.6 
44.4 
33.0 

62.5 
72.0 
56.4 
60.0 
46.5 
41.6 



36.0 
33.0 
31.2 
30.0 
29.4 

29.4 
33.0 
44.4 
33.0 
48.6 

46.5 
44.4 
41.6 
50.0 
50.0 

41.6 
41.6 
33.0 
31.2 
30.0 

39.5 
30.6 
45.8 
43.0 



28.8 
25.8 
24.6 
24.0 
22.5 



24.6 
25.2 
26.4 
28.8 
28.8 

25.2 
31.2 
62.5 
106.0 
55.6 

56.4 
69.0 
66.1 
46.5 
37.4 

38.1 
34.2 
30.6 
30.0 
30.6 

44.4 
37.4 
33.0 
36.0 
31.8 

31.8 

32.4 
24.6 
25.2 
22.5 
21.5 



21.5 
23.0 
23.0 
21.5 
20.0 

21.5 
30.0 
27.0 
33.0 
36.0 

39.5 
34.2 
33.0 
41.6 
72.0 

50.0 
34.8 
30.0 
28.8 
28.8 



39.5 
28.8 
25.8 
23.0 



23.0 
36.0 
25.2 
28.8 
24.0 

33.0 
43.0 
28.8 
28.8 
25.2 

23.0 
22.0 
20.0 
19.0 
19.5 

19.5 
22.5 
21.5 
24.0 
27.0 

23.0 

18.2 
20.0 
18.2 
17.8 

27.0 

28.8 
38.1 
67.2 
43.7 



37.4 
44.4 
30.0 
49.3 
39.5 

30.0 
33.0 
29.4 
28.8 
31.2 

44.4 
45.1 
48.6 
82.5 
44.4 

36.0 
33.0 
30.6 
25.2 
23.0 

33.0 
43.0 
34.8 
30.0 
28.8 

39.5 
50.0 
46.5 
30.0 
34.8 
54.0 



30.6 
28.8 
25.2 
24.0 
23.0 

23.0 
24.6 
43.0 
140.0 
47.9 

43.0 
36.0 
32.4 
31.2 
34.8 

163.0 
101.0 
103.0 
65.2 
79.2 

100.0 
62.5 
51.6 
37.4 
31.8 

30.0 
28.8 
27.0 
25.2 
43.0 



ISLAND OF MAUI. 

Monthly discharge of Iao Stream near Wailuku, Maui, for 1912. 



139 



Month. 


Discharge in second-feet. 


Run-off 

(total in 

acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 




43.0 
210.0 
235.0 
302.0 
72.0 
50.0 
106.0 
72.0 
57.2 
82.5 
163.0 
69.0 


20.5 
24.0 
44.4 
42.3 
27.6 
22.5 
21.5 
20.0 
17.8 
23.0 
23.0 
30.0 


24.5 

72.9 
96.6 
97.2 
43.1 
35.8 
38.5 
32.4 
26.9 
38.4 
51.2 
44.0 


1,510 
4,190 
5,940 
5,780 
2,650 
2,130 
2,370 
1,990 
1,600 
2,360 
3,050 
2,710 


B. 




A. 




A. 




A. 




A. 




B. 


July 


B. 




B. 




B. 




B. 




A. 




A. 








302.0 


17.8 


50.0 


36,300 









MANIANIA DITCH NEAR WAILUKU, MAUI. 

Location. — About 2\ miles west of Wailuku and 800 feet below intake. 

Records available. — November 14, 1910, to December 31, 1912. 

Gage. — Vertical staff; read twice daily; gage moved about December 30, 1911; new 

location and datum. 
Channel. — Probably permanent. 

Discharge measurements. — Made from plank 50 feet above gage. 
Accuracy. — Fair. 
Cooperation. — Station maintained in cooperation with Wailuku Sugar Co. 

Discharge measurements of Maniania ditch near Wailuku, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 9 
Dec. 9 




Feet. 
1.50 
1.10 


Sec.-ft. 
30.0 


C. T. Bailey 


19.8 









Daily gage height, in feet, of Maniania ditch near Wailuku, Maui, for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1 

2 
3 
4 
5 

6 
7 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 
18 
19 
20 



1.50 
1.45 
1.40 
1.30 
1.25 

1.20 
1.20 
1.45 
1.40 
1.25 

1.25 
1.15 
1.15 
1.10 
1.10 

1.10 
1.10 
1.10 
1.10 
1.10 



1.00 
1.45 
1.50 
1.20 
1.20 

1.10 
1.10 
1.05 
1.10 
1.05 

1.30 
1.15 
1 25 
1.30 
1.10 

1.10 
1.10 
1.00 
1.20 
.40 



1.10 

1.10 

.90 

.90 

1.05 



1.10 
1.15 
1.20 
1.20 
1.20 



1.25 
.75 
1.20 
1.25 
1.25 



1.35 
1.35 
1.35 
1.25 
1.25 

1.25 
1.20 
1.20 
1.20 
1.20 

1.25 
1.10 
.95 
1.00 
1.20 

1.20 
1.20 
1.20 
1.00 
1.05 



1.30 
1.35 
1.35 
1.35 
1.20 

1.35 
1.35 
1.35 



1.35 
1.30 
1.25 
1.25 
1.20 



1.45 
1.40 
1.45 
1.45 
1.45 

1.25 
1.45 
1.40 
1.40 
1.40 



1.20 
1.20 
1.20 
1.20 
1.20 

1.25 
1.30 
1.40 
1.40 
1.35 



1.50 
1.40 
1.40 
1.35 
1.25 



1.10 
1.10 
1.10 
1.05 
1.05 



1.30 
1.30 
1.25 
1.50 
1.50 

1.40 
1.35 
1.15 
1.20 
1.10 



1.05 
1.40 



1.05 

1.05 

1.05 

.95 

.95 

.90 

.95 

.95 

1.00 

1.00 

1.00 



1.10 
1.15 
1.12 
1.05 
1.05 

1.05 
1.30 
1.40 
1.50 
1.45 

1.35 
1.25 
1.12 
1.10 
.95 



1.30 

.90 

.90 

1.05 

1.05 

1.05 
1.00 
1.20 
1.40 
1.20 

1.40 
1.30 
1.25 
1.15 
1.40 

1.35 
1.20 
1.20 
1.20 
1.20 



1.10 
1.35 
.90 
1.00 
1.20 

1.25 
1.20 
1.00 
1.20 
1.25 

1.20 
1.20 
1.12 
1.15 
1.00 

1.30 
1.20 
1.30 
1.45 
1.35 



140 WATEB BESOUBCES OF HAWAII, 1912. 

Daily gage height, in feet, of Maniania ditch near Wailuku, Maui, for 1912 — Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


21 


1.00 
1.05 
1.05 
1.15 
1.05 

1.05 

1.00 

.90 

.95 

.95 

1.05 


0.90 
.70 
.70 
.70 
.50 

1.00 
1.05 
1.05 
1.05 


1.25 
1.25 
1.25 
1.10 
1.25 

1.25 
1.30 
1.35 
1.35 
1.35 
1.20 


1.10 
1.30 
1.30 
1.30 
1.35 

1.35 
1.35 
1.20 
1.30 
1.30 


1.30 
1.30 
1.25 
1.35 
1.25 

1.30 
1.35 
1.30 
1.30 
1.35 
1.35 


1.50 
1.40 
1.30 
1.45 
1.40 

1.35 
1.30 
1.25 
1.20 
1.15 


1.40 
1.25 
1.25 
1.30 
1.20 

1.20 
1.25 
1.20 
1.25 
1.15 
1.10 


1.10 
1.30 
1.10 
1.05 
1.00 

1.35 
1.40 
1.25 
1.35 
1.25 
1.10 


1.00 
.90 

.95 

.85 
.85 

1.00 
1.10 
1.20 
1.10 

1.40 


1.20 
1.35 
1.35 
1.30 
1.15 

1.40 
1.35 
1.45 
1.35 

1.40 
1.50 


1.20 
1.20 

"i.'io* 

1.20 
1.15 
1.30 


1.35 


22 


1.20 


23 


1.35 


24 


1.35 


25 


1.20 


26 


1.35 


27 


1.40 


28 


1.45 


29 


1.20 


30 


1.40 


31 


1.40 



Daily discharge, 


in second-feet, of Manian 


ia ditch near 


Wailuku, Maui, for 1912 




Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


30.0 

28.8 
27.5 
25.0 
23.8 

22.5 
22.5 
28.8 
27.5 
23.8 

23.8 
21.2 
21.2 
20.0 
20.0 

20.0 
20.0 
20.0 
20.0 
20.0 

17.5 
18.8 
18.8 
21.2 
18.8 

18.8 
17.5 
15.0 
16.2 
16.2 
18.8 


17.5 
28.8 
30.0 
22.5 
22.5 

20.0 
20.0 
18.8 
20.0 
18.8 

25.0 
21.2 
23.8 
25.0 
20.0 

20.0 
20.0 
17.5 
22.5 
5.0 

15.0 
10.5 
10.5 
10.5 
6.5 

17.5 
18.8 
18.8 
18.8 


20.0 
20.0 
15.0 
15.0 
18.8 

18.8 
18.8 
20.0 
20.0 
17.5 

20.0 
21.2 
22.5 
22.5 
22.5 

23.8 
11.5 
22.5 
23.8 
23.8 

23.8 
23.8 
23.8 
20.0 
23.8 

23.8 
25.0 
26.2 
26.2 
26.2 
22.5 


26.2 
26.2 
26.2 
23.8 
23.8 

23.8 
22.5 
22.5 
22.5 
22.5 

23.8 
20.0 
16.2 
17.5 
22.5 

22.5 

22.5 
22.5 
17.5 

18.8 

20.0 
25.0 
25.0 
25.0 
26.2 

26.2 
26.2 
22.5 
25.0 
25.0 


25.0 

26.2 
26.2 
26.2 
22.5 

26.2 
26.2 
26.2 
25.0 
25.0 

25.0 
22.5 
23.8 
23.8 
23.8 

23.8 

23.8 
23.8 
23.8 
26.2 

25.0 
25.0 
23.8 
26.2 
23.8 

25.0 
26.2 
25.0 
25.0 
26.2 
26.2 


26.2 
25.0 
23.8 
23.8 
22.5 

22.5 

23.8 
26.2 
23.8 
27.5 

28.8 
27.5 
28.8 
28.8 
28.8 

23.8 
28.8 
27.5 
27.5 
27.5 

30.0 
27.5 
25.0 
28.8 
27.5 

26:2 

25.0 
23.8 
22.5 
21.2 


22.5 
22.5 
22.5 
22.5 
22.5 

23.8 
25.0 
27.5 
27.5 
26.2 

27.5 
27.5 
22.5 
22.5 

27.5 

30.0 
27.5 
27.5 
26.2 
23.8 

27.5 
23.8 
23.8 
25.0 
22.5 

22.5 
23.8 
22.5 
23.8 
21.2 
20.0 


20.0 
20.0 
20.0 
18.8 
18.8 

18.8 
25.0 
20.0 
25.0 
25.0 

25.0 
25.0 
23.8 
30.0 
30.0 

27.5 
26.2 
21.2 
22.5 
20.0 

20.0 
25.0 
20.0 

18.8 
17.5 

26.2 
27.5 
23.8 
26.2 
23.8 
20.0 


18.8 
27.5 
20.0 
22.5 
21.2 

22.5 
25.0 
17.5 
21.2 

18.8 

18.8 
18.8 
16.2 
16.2 
15.0 

16.2 
16.2 
17.5 
17.5 
17.5 

17.5 
15.0 
16.2 
13.8 
13.8 

17.5 
20.0 
22.5 
20.0 
27.5 


28.8 
30.0 
25.0 
30.0 
25.0 

20.0 
21.2 
20.5 
18.8 
18.8 

18.8 
25.0 
27.5 
30.0 
28.8 

26.2 
23.8 
20.5 
20.0 
16.2 

22.5 
26.2 
26.2 
25.0 
21.2 

27.5 
26.2 
28.8 
26.2 
27.5 
30.0 


25.0 

15.0 
15.0 
18.8 
18.8 

18.8 
17.5 
22.5 
27.5 
22.5 

27.5 
25.0 
23.8 
21.2 
27.5 

26.2 
22.5 
22.5 
22.5 
22.5 

22.5 
22.5 
22.0 
21.5 
21.0 

20.5 
20.0 
22.5 
21.2 
25.0 


20.0 


2 


26.2 


3 


15.0 


4 


17.5 


5 


22.5 


6 


23.8 


7 


22.5 


8 


17.5 


9 


22.5 


10 


23.8 


11 


22.5 


12 


22.5 


13 


20.5 


14 


21.2 


15 


17.5 


16 


25.0 


17 


22.5 


18... 


25.0 


19 


28.8 


20 


26.2 


21 


26.2 


22 


22.5 


23 


26.2 


24 


26.2 


25 


22.5 


26 


26.2 


27 


27.5 


28 


28.8 


29 


22.5 


30. 


27.5 


31.... 


27.5 







Note. — Daily discharge determined from rating curve based on two discharge measurements in 1912. 
Monthly discharge of Maniania ditch near Wailuku, Maui, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


January 


30.0 
30.0 
26.2 
26.2 
26.2 
30.0 
30.0 
30.0 
27.5 
30.0 
27.5 
28.8 


15.0 
6.5 
11.5 
16.2 
22.5 
21.2 
20.0 
17.5 
13.8 
16.2 
15.0 
15.0 


21.4 
18.8 
21.4 
23.0 
24.9 
26.0 
24.6 
22.9 
19.0 
24.6 
22.0 
23.4 


1,320 
1,080 
1,320 
1,370 
1,530 
1,550 
1,510 
1,410 
1,130 
1,510 
1,310 
1,440 


C. 


February 


C. 


March 


c. 


April 


c. 


May 


c. 




c. 


July 


c. 


August 


c. 


September 


c. 


October 


c. 


November 


c. 


December 


c. 






The year . . 


30.0 


6.5 


22.7 


16, 500 









ISLAND OF MAUI. 



141 



WAIKAPU STREAM BASIN. 
WAIKAPU STREAM NEAR WAIKAPU, MAUI. 

Location. — About 5 miles southwest of Wailuku and 1^ miles west of Waikapu, 500 

feet below Palolo ditch. 
Records available. — November 25, 1910, to December 31, 1912. 
Gage. — Vertical staff; read twice daily, at 9 a. m. and 2 p. m.; datum unchanged. 
Channel. — Shifting. 

Discharge measurements. — Made by wading. 
Accuracy. — Fair . 

Discharge measurements of Waikapu Stream near Waikapu, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 9 

12 


J. B. Stewart 

do 


Feet. 
0.91 
.50 
.31 


Sec.-ft. 
6.60 
.50 
.36 


Oct. 18 
Nov. 20 
Dec. 11 


J. B.Stewart 

do 

C.T.Bailey 


Feet. 
0.30 
.70 
.30 


Sec.-ft. 
0.25 
2.34 


Aug. 30 


do 


.22 



Daily gage height, in feet, of Waikapu Stream near Waikapu, Maui, for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


^ May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


0.38 


0.32 


0.42 


1.10 


0.38 


0.30 


0.30 


0.3S 


0.30 


0.30 


0.30 


.38 


.62 


1.49 


1.18 


.38 


.29 


.30 


.38 


.32 


.40 


.30 


.38 


.51 


1.40 


1.34 


.38 


.28 


.30 


.39 


.30 


.30 


.30 


.38 


.60 


.68 


2.02 


.35 


.28 


.30 


.38 


.30 


.31 


.30 


.38 


.32 


.46 


1.81 


.32 


.28 


.30 


.38 


.30 


.30 


.30 


.38 


.32 


.48 


1.12 


.30 


.25 


.30 


.40 


.30 


.30 


.30 


.38 


.32 


.64 


1.38 


.30 


.30 


.29 


.40 


.31 


.28 


.30 


.50 


.32 


.42 


1.21 


.31 


.30 


.28 


.40 


.30 


.30 


.31 


.41 


.34 


1.02 


.91 


.30 


.30 


1.36 


.40 


.30 


.30 


1.48 


.40 


.32 


1.39 


.50 


.30 


.62 


.66 


.40 


.30 


.30 


.35 


.38 


.49 


1.62 


.52 


.30 


.39 


.39 


.40 


.30 


.30 


.30 


.38 


.34 


1.26 


1.91 


.30 


.34 


.34 


.42 


.30 


.30 


.30 


.38 


.38 


1.26 


.89 


.30 


.31 


.54 


.40 


.30 


.34 


.30 


.38 


.32 


.55 


1.46 


.30 


.30 


.44 


.40 


.30 


.45 


.28 


.38 


.32 


.35 


.86 


.30 


.48 


.42 


.74 


.30 


.30 


.28 


.36 


.32 


.32 


.65 


.30 


.35 


.42 


.48 


.30 


.30 


1.32 


.40 


.32 


.70 


.68' 


.30 


.38 


.41 


.40 


.30 


.30 


.92 


.40 


.32 


1.06 


.70 


.28 


.30 


.38 


.39 


.30 


.30 


1.22 


.40 


1.15 


.54 


.45 


.28 


.30 


.35 


.35 


.30 


.30 


.38 


.40 


1.34 


.89 


.52 


.30 


.30 


.35 


.35 


.30 


.30 


1.08 


.40 


1.08 


.74 


.54 


.28 


.48 


.35 


.35 


.30 


.31 


.48 


.39 


.64 


.45 


.42 


.28 


.30 


.34 


.44 


.30 


.32 


.52 


.40 


.46 


.40 


.42 


.28 


.30 


.32 


.36 


.31 


.30 


.31 


.38 


.40 


.40 


.40 


.49 


.41 


.32 


.35 


.30 


.30 


.30 


.35 


.36 


.35 


.40 


.36 


.31 


.32 


.35 


.30 


.30 


.30 


.32 


.55 


.38 


.40 


.36 


.30 


.32 


.38 


.30 


.30 


.31 


.32 


1.92 


.40 


.45 


.59 


.30 


.32 


.35 


.30 


.58 


.30 


.32 


1.62 


.36 


.40 


.40 


.30 


.32 


.30 


.32 


.36 


.30 


.36 


.56 


.40 


.39 


.36 


.30 


.40 


.31 


.30 


.30 


.30 


.36 




.59 


.38 


.30 


.30 


.40 


.30 


.38 


.30 


.30 


.32 




.74 




.30 




.38 


.30 




.30 





Dec. 



1 
2 
3 
4 
5 

6 
7 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 
18 
19 
20 

21 

22 
23 

24 
25 

26 
27 
28 
29 
30 
31 



0.35 
.30 
.48 
.30 
.30 

.30 
.38 
.30 
.30 
.30 

.30 
.30 
.28 
.30 
.30 

.30 
.31 
.30 
.30 
.30 

.30 
.31 
.30 
.30 
.30 

.30 
.30 
.30 
.30 
.30 
.30 



Daily discharge, in second-feet, of Waikapu Stream near Waikapu, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1„ 


0.3 
.3 
.3 
.3 
.3 


0.2 
1.2 

.0 
1.0 

.2 


0.3 
34.3 

28.0 

1.8. 

.4 


13.0 

16.2 
24.4 
87.6 
63.1 


0.3 
.3 
.3 
.2 
.2 


0.2 
.2 
.2 
.2 
.2 


0.2 
.2 
.2 
.2 
.2 


O.C 
.3 
.3 
.3 
.3 


0.2 
.2 
.2 
.2 
.2 


0.2 
.3 
.2 
.2 
.2 


0.2 
.2 
.2 
.2 
.2 


0.2 
.2 
.5 
.2 
.2 


2 


3 


4 


5 



142 WATER RESOURCES OF HAWAII, 1912. 

Daily discharge, in second-feet, of WaiJcapu Stream near Waikapu, Maui, for 1912 — Contd. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


6 


0.3 
.3 
.5 
.3 
.3 

.3 
.3 
.3 
.3 
.3 

.3 
.3 
.3 
.3 
.3 

.3 
.3 
.3 
.3 

.2 

.2 
.2 
.2 
.3 
.3 
.2 


0.2 
.2 
.2 
.2 
.2 

.5 
.2 
.3 
.2 
.2 

.2 

.2 

.2 

15.0 

24.4 

12.2 

1.4 

.4 

.3 

.3 

.8 

75.4 

44.8 

1.0 


0.5 

1.4 

.3 

9.8 

27.4 

44.8 

20.0 

20.0 

.8 

.2 

.2 
2.0 
11.4 

.7 
5.8 

2.8 
.4 
.3 
.3 
.2 

.3 
.3 
.3 
.3 

1.0 

2.8 


13.8 

26.8 

17.5 

6.3 

.5 

.6 
74.2 

5.8 
32.2 

5.2 

1.5 

1.8 

2.0 

.4 

.6 

.7 
.3 
.3 
.3 
.3 

.3 
.4 
.3 
.3 
.3 


0.2 
.2 
.2 
.2 
.2 

.2 
.2 
.2 
.2 
.2 

.2 
.2 
.2 
.2 
.2 

.2 
.2 
.2 
.5 
.3 

.3 
1.0 
.3 
.2 
.2 
.2 


0.2 
.2 
.2 
.2 

1.2 

.3 
.2 
.2 
.2 

.5 

.2 
.3 
.2 

.2 
.2 

.5 
.2 
.2 
.3 
.2 

.2 
.2 
.2 
.2 
.2 


0.2 

.2 

.2 

25.6 

1.6 

.3 
.2 

.7 
.4 
.3 

.3 
.3 
.3 
.2 
.2 

.2 
.2 
.2 
.2 
.2 

.2 
.2 
.2 
.3 
.3 
.3 


0.3 
.3 
.3 
.3 
.3 

.3 
.3 
.3 
.3 

2.8 

.5 
.3 
.3 
.2 
.2 

.2 
.4 
.3 
.3 
.3 

.3 
.2 
.2 
.2 
.2 
.2 


0.2 
.2 
.2 
.2 
.2 

.2 
.2 
.2 
.2 

.2 

.2 
.2 
.2 
.2 
.2 

.2 
.2 
.2 
.2 
.2 

.2 
.2 
.2 
.2 
.3 


0.2 
.2 
.2 
.2 
.2 

.2 
.2 
.2 

.4 
.2 

.2 
.2 
.2 
.2 
.2 

.2 
.2 
.2 
.2 
.2 

.2 
.9 
.3 
.2 
.2 
.2 


0.2 

.2 

.2 

33.6 

.2 

.2 
.2 
.2 
.2 
.2 

23.2 

6.6 

18.0 

.3 

12.2 

.5 
.6 
.2 
.2 
.2 

.2 

.2 
.2 
.2 
.2 


0.2 


7 


.3 


8 


.2 


9 


.2 


10 


.2 


11 


.2 


12 


.2 


13 


.2 


14 .....:.. 


.2 


15 


.2 


16 


.2 


17 


.2 


18 


.2 


19 


.2 


20 


.2 


21 


.2 


22 


.2 


23 


.2 


24 


.2 


25 


.2 


26 


.2 


27 


.2 


28 


.2 


29 


.2 


30 


.2 


31 


.2 







Monthly discharge of Waikapu Stream near Waikapu, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean. 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April.. 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



0.5 
75.4 
44.8 
87.6 

1.0 

1.2 
25.6 

2.8 
.3 



87. 



0.2 
.2 
.2 
.3 
.2 
.2 
.2 
.2 
.2 
.2 
.2 
.2 



0.29 

6.28 

7.07 

13.20 

.25 

.26 

1.11 

.36 

.20 

.24 

.33 

.21 



2.70 



17.8 

361.0 

435.0 

785.0 

15.4 

15.5 

68.2 

22.1 

11.9 

14.8 

19.6 

12.9 



1,780.0 



SOUTH SIDE WAIKAPU DITCH NEAR WAIKAPU, MAUI. 



Location. — About 1J miles west of Waikapu, 1 mile below ditch intake, and 5 miles 

southwest of Wailuku. 
Records available. — November 21, 1910, to December 31, 1912. 
Gage. — Vertical staff; read twice daily, at 9 a. m. and 2 p. m. 
Channel. — Permanent . 

Discharge measurements. — Made from plank over ditch about 400 feet below gage. 
Accuracy. — Records good. 
Cooperation. — Station is maintained in cooperation with Wailuku Sugar Co. 



ISLAND OF MAUI. 143 

Discharge measurements of South Side Waihapu ditch near Waihapu, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 8 
July 9 
Aug. 30 


J. B. Stewart 

do 

do 


Feet. 
0.84 
1.07 
.65 


Sec.-ft. 
8.02 
11.4 
4.90 


Oct. 18 
Nov. 20 
Dec. 11 


J.B.Stewart 

do 

C.T.Bailey 


Feet. 

Q0.59 
.90 
.62 


Sec-ft. 
3.56 
9.68 
4.58 



a New gage Oct. 18, 1912. 
Daily gage height, in feet, of South Side Waihapu ditch near Waihapu, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.60 
.60 
.58 
.58 
.58 

.58 
.58 
.78 
.61 
.60 

.58 
.58 
.58 
.58 
.55 

.55 
.55 
.55 
.55 
.52 

.52 
.52 
.52 
.59 
.52 

.50 
.50 
.50 
.54 
.64 
.50 


0.51 
.91 

.82 
.72 
.61 

.58 
.58 
.55 
.59 
.58 

.68 
.61 
.66 
.60 
.60 

.60 

.60 

.58 

1.05 

1.10 

.95 
.76 
.79 
.70 
.80 

.90 
1.11 
1.06 

.99 


0.89 
1.05 
1.01 
1.00 
.90 

.90 

.95 

.89 

1.06 

1.11 

1.15 
1.10 
1.10 
1.00 
.90 

.81 
.98 

1.06 
.80 

1.00 

.92 
.85 
.81 
.79 

.74 

.79 
.79 
.78 
.80 
.95 
.98 


1.05 
1.14 
1.11 
1.20 
.95 

1.10 
1.15 
1.11 
.96 
1.01 

.98 
1.28 

.99 
1.12 
1.02 

1.02 

1.00 

.99 

.98 

.96 

.94 
.89 
.89 

.85 
.82 

.80 
.82 
.79 
.78 
.80 


0.80 
.80 
.80 

.78 
.78 

.75 
.75 
.78 
.75 
.74 

.74 
.71 
.70 
.70 
.70 

.71 
.70 
.70 

.70 
.71 

.70 
.70 
.69 
.90 
.70 

.79 
.92 
.82 
.82 
.79 
.79 


0.71 
.70 
.70 
.70 
.70 

.70 
.71 
.70 
.70 

.85 

.89 
.84 
.85 
.79 
.90 

.88 
.85 
.79 
' .75 
.70 

.80 
.71 
.70 
.78 
.71 

.70 
.70 
.69 
.68 
.68 


0.70 
.70 
.70 
.70 
.70 

.69 
.68 
.68 
1.10 
.95 

.81 
.80 
.92 
.80 

.74 

.75 

.74 
.72 
.70 
.70 

.70 
.69 
.70 
.70 
.70 

.70 
.70 
.70 
.70 
.70 
.70 


0.70 
.70 
.70 
.70 
.70 

.70 
.70 
.70 
.70 
.70 

.71 

.75 
.72 
.70 
.96 

.89 
.72 
.69 
.66 
.65 

.65 
.76 
.62 
.62 
.62 

.71 
.80 
.70 
.69 
.69 
.65 


0.65 
.70 
.66 

.65 
.65 

.65 
.69 
.65 
.64 
.62 

.61 
.60 
.60 
.60 
.60 

.60 
.60 
.60 
.60 
.60 

.60 
.60 
.61 
.60 
.60 

.64 
.60 
.65 
.60 
.68 


0.60 

.35 
.61 
.62 
.60 

.60 

.58 
.58 
.58 
.58 

.58 
.60 

.65 
.78 
.62 

.60 
.60 
.60 

.58 
.58 

.62 
.68 
.60 
.60 
.60 

.60 
.86 
.75 
.62 
.60 
.68 


0.60 
.60 
.58 
.58 

.58 

.58 

■ .58 

.58 

.86 

.78 

.65 
.60 
.60 
.58 
.58 

.96 
.86 
.92 
.81 
.95 

.82 
.84 
.75 
.70 
.68 

.65 
.60 
.60 
.60 
.61 


0.68 


2 


.60 


4 


.78 


4 


.68 


5 


.60 


6 


.60 


7 


.78 


8 


.71 


9 


.66 


10 


.60 


11 


.60 


12 


.60 


13 


.60 


14 


.60 


15 


.60 


16 


.61 


17 


.60 


18 


.60 


19 


.60 


20 


.58 


21 


.58 


22 


.61 


23 


.60 


24 


.58 


25 


.58 


26 


.58 




.55 


28 


.58 




.56 


30 


.58 




.58 







Daily discharge, in second-feet, of South Side Waihapu ditch near Waihapu, Maui, for 

1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


4.2 
4.2 
3.9 
3.9 
3.9 

3.9 
3.9 

7.0 
4.4 
4.2 

3.9 
3.9 
3.9 
3.9 
3.5 


2.9 
9.2 

7.6 
6.0 
4.4 

3.9 
3.9 
3.5 
4.1 
3.9 

5.4 
4.4 
5.1 
4.2 
4.2 


8.8 
11.7 
11.0 
10.8 

9.0 

9.0 
9.9 
8.8 
11.9 
12.8 

13.6 
12.6 
12.6 
10.8 
9.0 


11.7 
13.4 
12.8 
14.5 
9.9 

12.6 
13.6 
12.8 
10.1 
11.0 

10.4 
16.1 
10.6 
13.0 
11.2 


7.3 
7.3 
7.3 
7.0 
7.0 

6.5 
6.5 
7.0 
6.5 
6.3 

6.3 
5.9 
5.7 
5.7 
5.7 


5.9 
5.7 
5.7 
5.7 
5.7 

5.7 
5.9 
5.7 
5.7 
8.2 

8.8 
8.0 
8.2 
7.1 
9.0 


5.7 
5.7 
5.7 
5.7 
5.7 

5.6 
5.4 
5.4 
12.6 
9.9 

7.5 
7.3 
9.4 
7.3 
6.3 


5.7 
5.7 
5.7 
5.7 

5.7 

5.7 
5.7 
5.7 
5.7 
5.7 

5.9 
6.5 
6.0 
5.7 
10.1 


5.0 
5.7 
5.1 
5.0 
5.0 

5.0 
5.6 
5.0 

4.8 
4.5 

4.4 
4.2 
4.2 
4.2 
4.2 


4.2 
1.0 
4.4 
4.5 
4.2 

4.2 
3.9 
3.9 
3.9 
3.9 

3.9 
4.2 
5.0 

7.0 
4.5 


4.2 
4.2 
3.9 
3.9 
3.9 

3.9 
3.9 
3.9 
8.3 
7.0 

5.0 
4.2 
4.2 
3.9 
3.9 


5.4 


2 


4.2 


3 


7.0 


4 


5.4 


5 

6 


4.2 
4.2 


7 


7.0 


8 


5.9 


9 


5.1 


10 


4.2 


11 


4.2 


12 


4.2 


13 


4.2 


14 


4.2 


15 


4.2 



144 



WATER RESOURCES OP HAWAII, 1912. 



Daily discharge, in second-feet, of South Side Waikapu ditch near Waikapu, Maui, for 

1912— Continued. 



Day., 



17. 
18. 
19. 
20. 

21. 

22. 
23. 
24. 
25. 

26. 
27. 
28. 
29. 
30. 
31. 



Jan. 



3.5 
3.5 
3.5 
3.5 
3.1 

3.1 
3.1 
3.1 
4.1 
3.1 

2.8 
2.8 
2.8 
3.4 
4.8 
2.8 



Feb. 



4.2 
4.2 
3.9 
11.7 
12.6 



6.7 

7.1 
5.7 
7.3 

9.0 
12.8 
11.9 
10.6 



Mar. 



7.5 
10.4 
11.9 

7.3 
10.8 

9.4 
8.2 
7.5 
7.1 
6.3 

7.1 
7.1 
7.0 
7.3 
9.9 
10.4 



Apr. 



11.2 
10.8 
10.6 
10.4 
10.1 

9.7 
8.8 



7.3 
7.6 
7.1 
7.0 
7.3 



May. 



5.9 
5.7 
5.7 
5.7 
5.9 

5.7 
5.7 
5.6 
9.0 

5.7 

7.1 
9.4 
7.6 
7.6 
7.1 
7.1 



June. 



8.7 
8.2 
7.1 
6.5 
5.7 

7.3 
5.9 
5.7 
7.0 
5.9 

5.7 
5.7 
5.6 
5.4 
5.4 



July. 



6.5 
6.3 
6.0 
5.7 

5.7 

5.7 
5.6 
5.7 
5.7 
5.7 

5.7 
5.7 
5.7 
5.7 
5.7 
5.7 



Aug. 



6.0 
5.6 
5.1 
5.0 

5.0 
6.7 
4.5 
4.5 
4.5 

5.9 
7.3 
5.7 
5.6 
5.6 
5.0 



Sept. 



4.2 
4.2 
4.2 
4.2 
4.2 

4.2 
4.2 
4.4 
4.2 
4.2 

4.8 
4.2 
5.0 
4.2 
5.4 



Oct. 



4.2 
4.2 
4.2 
3.9 
3.9 

4.5 
5.4 
4.2 
4.2 
4.2 

4.2 
8.3 
6.5 
4.5 
4.2 
5.4 



Nov. 



10.1 
8.3 
9.4 
7.5 



7.6 
8.0 
6.5 



Dec. 



4.4 
4.2 
4.2 
4.2 



3.9 
4.4 
4.2 



3.9 
3.5 
3.9 
3.6 
3.9 
3.9 



Monthly discharge of South Side Waihapu ditch near Waikapu, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September...... 

October 

November 

December 

The year 



7.0 
12.8 
13.6 
16.1 
9.4 
9.0 
12.6 
10.1 
5.7 
8.3 
10.1 
7.0 



16.1 



2.8 
2.9 
6.3 
7.0 
5.6 
5.4 
5.4 
4.5 
4.2 
1.0 
3.9 
3.5 



1.0 



3.73 
6.56 
9.60 
10.50 
6.60 
6.56 
6.39 
5.87 
4.59 
4.47 
5.62 
4.44 



24 



229.0 
377.0 
590.0 
625.0 
406.0 
390.0 
393.0 
361.0 
273.0 
275.0 
334.0 
273.0 



4,530.00 



PALOLO (EVERETT) DITCH NEAR WAIKAPU, MAUI. 

Location. — About 5| miles southwest of Wailuku and 1J miles west of Waikapu and 

200 feet below ditch intake. 
Records available. — November 21, 1910, to December 31, 1912. 
Gage. — Vertical staff; read twice daily, at 9 a. m. and 2 p. m.; datum unchanged. 
Channel. — Permanent . 

Discharge measurements.— Made by wading. 
Accuracy. — Records good. 
Cooperation. — Station maintained in cooperation with Wailuku Sugar Co. 

. Discharge measurements of Palolo ditch near Waikapu, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 8 
July 12 
Aug. 30 


J. B. Stewart 

do 


Feet. 
0.98 
.98 

.89 


Sec.-ft. 
3.50 
3.82 
3.27 


Oct. 18 
Dec. 11 


J. B. Stewart 

C.T.Bailey 


Feet. 
0.88 
.86 


Sec.-ft. 
3.00 
2.91 


do 





ISLAND OF MAUI. 



145 



Daily 


gage height. 


infeet, 


of Palolo ditch near Waikapu, Maui, for 1912. 




Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.95 
.95 
.95 
.95 
.95 

.95 

.98 

1.04 

1.00 

.98 

.98 
.98 
.98 
.98 
.95 

.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.99 
.98 

.95 
.95 
.95 
.96 
.98 
.98 


0.98 
1.18 
1.19 
1.09 

.98 

.98 
.98 
.98 
.99 
.98 

1.05 

1.01 

1.02 

.99 

.98 

.98 

.98 

.98 

1.14 

1.14 

1.11 
1.09 
1.05 
1.00 
.98 

1.01 
1.14 
1.11 
1.02 


1.01 
1.14 
1.11 
1.09 
1.02 

1.04 
1.09 
1.00 
1.09 
1.14 

1.15 
1.14 
1.11 
1.01 

.98 

.98 
1.06 
1.10 
1.00 
1.04 

1.02 
.99 
.95 
.94 
.92 

.94 
.95 
.96 
.95 
.98 
.99 


1.09 
1.10 
1.15 
1.20 
1.11 

.95 
1.05 
1.05 
1.02 

.95 

.96 
1.16 

.95 
1.06 
1.05 

1.04 

1.04 

1.05 

.99" 

.98 

.98 
.95 

.95 

.98 
.98 

.95 
.95 

.98 
.98 
.98 


0.98 

.98 
.96 
.95 
.95 

.95 
.95 

.98 
.95 
.95 

.95 
.95 
.95 
.95 
.95 

.96 
.95 
.95 
.95 
.96 

.95 
.95 
.95 
1.05 
.98 

.98 
1.05 
.98 
.99 
.95 
.95 


0.95 

.95 
.95 
.95 
.95 

.95 
.96 
.95 
.95 
.99 

1.00 
.96 
.98 
.96 

1.00 

.98 
.95 
.95 
.95 
.94 

.99 
.96 
.95 
1.00 
.96 

.95 
.95 
.95 
.95 
.95 


0.95 

.95 
.95 
.95 
.95 

.95 

.95 

.95 

1.11 

1.01 

.96 
.95 
1.00 
.95 
.95 

.96 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 
.95 


0.95 
.95 
.95 
.95 
.95 

.95 
.95 
.95 
.95 
.95 

.96 
.98 
.96 
.95 
.99 

.98 
.95 
.95 
.95 
.95 

.95 
.98 
.95 
.92 
.92 

.94 
.98 
.94 
.94 
.96 
.94 


0.92 

.95 
.94 
.90 
.90 

.92 
.91 
.90 
.90 
.90 

.90 
.90 
.90 
.90 
.90 

.90 
.90 
.90 
.90 
.90 

.90 
.90 
.92 
.90 
.90 

.91 
.90 
.92 
.90 
.94 


0.90 
.98 
.90 
.91 
.90 

.90 
.90 

.88 
.88 
.89 

.89 
.90 
.95 
.98 
.90 

.90 
.90 
.89 
.88 
.88 

.92 
.92 
.90 
.90 
.90 

.90 

1.01 

.98 

.90 

.88 
.89 


0.88 
.88 

.88 
.88 
.88 

.88 
.88 
.89 
1.18 
.92 

.90 

.89 
.88 
.88 
.88 

1.08 
1.01 
1.08 
.95 
1.08 

.96 
.96 
.90 
.90 
.90 

.90 
.90 

.88 
.88 
.89 


0.91 


2 


.90 


3 


.96 


4 


.90 


5 


.88 


6 


.88 


7 


.99 


8 


.90 


9 


.90 


10 


.88 


11 


.88 


12 


.88 


13.. 


.88 


14 


.88 


15 


.88 


16 


.89 


17 


.90 


18 


.88 


19 


.88 


20 


.88 


21 


.89 


22 


.89 


23 


.88 


24 


.88 


25 


.88 


26 


.88 


27... 


.86 


28 


.85 


29 


.86 


30 


.88 


31 


.88 







Daily discharge, in second-feet, of Palolo ditch near WaiJcapu, Maui, for 1912. 



Day. 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec 



3.6 
3.6 
3.6 
3.6 
3.6 

3.6 
3.8 
4.4 
4.0 
3.8 

3.8 
3.8 
3.8 
3.8 
3.6 

3.6 
3.6 
3.6 
3.6 



3.6 
3.6 
3.6 
3.9 
3.8 

3.6 

3.6 
3.6 
3.7 
3.8 
3.8 



3.8 
5.8 
5.9 
4.9 
3.8 



3.9 
3.8 

4.5 
4.1 
4.2 
3.9 
3.8 

3.8 

3.8 
3.8 
5.4 
5.4 



5.1 
4.9 
4.5 
4.0 
3.8 

4.1 
5.4 
5.1 
4.2 



4.1 
5.4 
5.1 



4.2 



4.0 
4.9 
5.4 

5.5 
5.4 
5.1 
4.1 
3.8 

3.8 

4.6 
5.0 
4.0 
4.4 

4.2 
3.9 
3.6 
3.5 
3.4 



3.7 
3.6 
3.8 
3.9 



4.9 
5.0 
5.5 
6.0 
5.1 

3.6 

4.5 
4.5 
4.2 
3.6 

3.7 
5.6 
3.6 
4.6 
4.5 

4.4 
4.4 
4.5 
3.9 
3.8 

3.8 
3.6 
3.6 
3.8 
3.8 



3.6 
3.8 
3.8 
3.8 



3.8 
3.8 
3.7 
3.6 
3.6 

3.6 
3.6 
3.8 
3.6 
3.6 

3.6 
3.6 
3.6 
3.6 
3.6 

3.7 
3.6 
3.6 
3.6 
3.7 

3.6 
3.6 
3.6 
4.5 
3.8 

3.8 
4.5 
3.8 
3.9 
3.6 
3.6 



3.6 
3.6 
3.6 
3.6 
3.6 

3.6 

3.7 
3.6 
3.6 
3.9 

4.0 
3.7 
3.8 
3.7 
4.0 

3.8 
3.6 
3.6 
3.6 
3.5 

3.9 
3.7 
3.6 
4.0 
3.7 

3.6 
3.6 
3.6 
3.6 
3.6 



3.6 
3.6 
3.6 



3.6 
3.6 
3.6 
5.1 
4.1 

3.7 
3.6 
4.0 
3.6 
3.6 

3.7 
3.6 
3.6 
3.6 
3.6 

3.6 



3.6 
3.6 

3.6 
3.6 
3.6 
3.6 
3.6 
3.6 



3.6 
3.6 
3.6 
3.6 
3.6 



3.7 
3.8 
3.7 
3.6 



3.8 
3.6 
3.6 
3.6 
3.6 



3.8 
3.6 
3.4 
3.4 

3.5 

3.8 
3.5 
3.5 
3.7 
3.5 



3.4 
3.6 
3.5 
3.2 
3.2 

3.4 
3.3 

3.2 
3.2 
3.2 

3.2 
3.2 
3.2 
3.2 
3.2 

3.2 

3.2 
3.2 
3.2 
3.2 

3.2 
3.2 
3.4 
3.2 
3.2 

3.3 
3.2 
3.4 
3.2 
3.5 



3.2 
3.8 
3.2 
3.3 
3.2 

3.2 
3.2 
3.0 
3.0 
3.1 

3.1 
3.2 
3.6 
3.8 
3.2 

3.2 
3.2 
3.1 
3.0 
3.0 

3.4 
3.4 
3.2 
3.2 
3.2 

3.2 

4.1 
3.8 
3.2 
3.0 
3.1 



3.0 
3.0 
3.0 
3.0 
3.0 

3.0 
3.0 
3.1 

.5.8 
3.4 

3.2 
3.1 
3.0 
3.0 
3.0 

4.8 
4.1 

4.8 
3.6 

4.8 

3.7 
3.7 
3.2 
3.2 
3.2 

3.2 
3.2 
3.0 
3.0 
3.1 



3.2 
3.2 
3.7 
3.2 
3.0 

3.0 

3.9 
3.2 
3.2 
3.0 

3.0 
3.0 
3.0 
3.0 
3.0 

3.1 
3.2 
3.0 
3.0 
3.0 

3.1 
3.1 
3.0 
3.0 
3.0 

3.0 

2.9 
2.8 
2.9 
3.0 
3.0 



14694°— wsp 336—14- 



-10 



146 



WATER RESOURCES OF HAWAII, 1912. 



Monthly discharge of Palolo ditch' near Waikapu, Maui, for 1912. 



Month. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



Discharge in second-feet. 



Maximum. Minimum. Mean. 



4.4 
5.9 
5.5 
6.0 
4.5 
4.0 
5.1 
3.9 
3.6 
4.1 
5.8 



6.0 



3.6 
3.8 
3.4 
3.6 
3.6 
3.5 
3.6 
3.4 
3.2 
3.0 
3.0 
2.8 



2.8 



3.71 
4.38 
4.31 
4.24 
3.72 

3^68 
3.62 
3.27 
3.27 
3.44 



.70 



Run-off 
(total in 
acre-feet). 



228 
252 
265 
252 
229 
220 
226 
223 
195 
201 
205 
190 



Accu- 
racy. 



UKUMEHAME STREAM BASIN. 
TTKUMEHAME STREAM NEAR OLOWALTT, MATH. 

Location. — About 8| miles southeast of Lahaina and 2J miles east of Olowalu and 

125 feet above intake of Olowalu Plantation ditch. 
Records available. — August 14, 1911, to December 16, 1912. 
Gage. — Inclined staff; read twice daily, at 10 a. m. and 4 p.m.; destroyed by freshet 

December 16, 1912; not replaced before close of year. 
Channel. — Shifting . 

Discharge measurements. — Made by wading. 
Accuracy. — Records good. 
Cooperation.— Station maintained with Olowalu Sugar Co. 

Discharge measurements of Uhumehame Stream near Olowalu, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 30 
Dec. 14 


J. B. Stewart 


Feet. 
0.50 
.53 


Sec.-ft. 
5.40 


C. T. Bailey 


4.66 









Daily gage height, in feet, of Ukumehame Stream near Olowalu, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.50 
.50 
.50 
.48 
.48 

.48 
.48 
.52 
.50 
.50 

.48 
.48 
.48 
-.48 
.48 


0.45 
.72 
.68 
.52 
.50 

.48 
.45 
.45 
.45 
.45 

.48 
.50 
.45 
.45 
.45 


0.75 
.95 
.85 
.72 
.72 

.70 
.75 
.68 
.75 
.75 

1.05 
.92 
.85 
.72 

.70 


0.82 
.95 
.92 
1.00 
1.25 

.90 

.95 

.92 

.80" 

.72 

.68 
.85 
.72 
.90 
.72 


0.55 
.52 
.55 
.55 
.55 

.55 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.50 
.50 


0.55 

.52 
.50 
.50 
.50 

.50 
.50 
.50 
.50 
.52 

.55 
.55 
.55 
.55 
.60 


0.55 
.55 
.55 
.55 
.55 

.55 
.55 
.62 
.85 
.65 

.60 
.60 
.62 
• .60 
.55 


0.50 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.50 
.65 


0.54 
.50 
.50 
.50 
.50 

.50 
.51 
.50 
.50 

.50 

.50 
.50 
.50 
.50 
.50 


0.55 
.61 
.54 
.52 
.52 

.50 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.58 
.50 


0.51 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
1.15 
.65 

.60 
.58 
.55 
.55 
.55 


0.60 


2 


.55 


3 


.61 


4 


.56 


5 


.52 


6 


.52 


7 


.60 


8 


.60 


9 


.60 


10 


.52 


11 


.52 


12 


.52 


13 


.52 


14 

15 


.55 
' .52 



ISLAND OF MAUI. 147 

Daily gage height, in feet, of Ukumehame Stream near Olowalu, Maui, for 1912 — Contd. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 


0.48 
.45 
.45 
.45 
.45 

.45 
.45 
.45 
.50 
.45 

.45 
.45 
.45 
.45 
.48 
.45 


0.45 

.45 
.45 
.52 
.80 

.80 
.61 
.56 
.56 
.56 

.60 
1.15 
1.02 

.80 


0.70 

.65 
.72 
.70 
.78 

.72 
.68 
.60 
.60 
.60 

.60 
.60 
.60 
.60 
.68 
.72 


0.70 
.68 
.70 
.65 
.60 

.60 
.60 
.60 
.60 
.60 

.60 
.60 

.58 
.55 
.55 


0.50 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.58 
.50 

.52 
.62 
.60 

.58 
.55 
.55 


0.60 
.60 
.60 
.55 
.55 

.62 
.58 
.55 
.60 
.58 

.55 
.55 
.55 
.55 
.55 


0.58 
.55 
.55 
.55 
.52 

.50 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.50 
.50 
.50 


0.58 
.52 
.50 
.50 
.50 

.50 
.55 
.50 
.50 
.50 

.50 
.58 
.55 
.55 
.55 
.55 


0.50 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.50 
.50 

.51 
.50 
.51 
.50 
.58 


0.50 
.50 
.50 
.50 
.50 

.51 
.52 
.50 
.50 
.50 

.50 
.55 
.56 
.52 
.52 
.60 


0.80 
.85 
.85 
.68 
.80 

.80 
.75 
.66 
.62 
.60 

.60 
.60 
.60, 
.56 
.52 


0.55 


17 




18 




19 




20 




21 




22 




23 




24 




25 




26 




27 




28 




29 




30 




31 











OLOWALU STREAM BASIN. 
OLOWALTT DITCH NO. 1 NEAR OLOWALTT, MATJI. 

Location. — About 7 miles east of Lahaina and 1 mile above Olowalu at Olowalu 

Plantation power house. 
Records available. — August 12, 1911', to December 31, 1912. 

Gage. — Vertical staff; read twice daily, at 5.30 a. m. and 5.30 p. m. ; datum unchanged. 
Channel. — Permanent. 

Discharge measurements. — Made in flume. 
Accuracy. — Records fair. 
Cooperation. — Station maintained in cooperation with Olowalu Sugar Co. 

Discharge measurements of Olowalu ditch No. 1 near Olowalu, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 4 
4 
4 

June 29 


J. B. Stewart 

do 

do 

.....do 


Feet. 

0.75 

.24 

.27 

.36 


Sec.-ft. 
13.8 
2.38 
2.71 

4.74 


July 30 
Sept. 9 
Dec. 14 


J. B. Stewart 

do 

C.T.Bailey 


Feet. 
0.26 
.30 
.31 


Sec.-ft. 
3.33 
4.00 
4.50 



Daily gage height, in feet, of Olowalu ditch No. 1 near Olowalu, Maui, for 1912. 
Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 



1 

2 
3 
4 
5 

6 
7 

8 
9 
10 

11 

12 
13 
14 
15 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


0.40 


0.32 


0.75 


0.75 


0.42 


0.35 


0.40 


0.30 


0.32 


0.38 


0.44 


.40 


.65 


.80 


.75 


.50 


.35 


.40 


.31 


.41 


.40 


.38 


.40 


.75 


.80 


.78 


.45 


.35 


.40 


.32 


.37 


.32 


.35 


.42 


.55 


.75 


.75 


.50 


.35 


.42 


.35 


.35 


.30 


.35 


.38 


.45 


.75 


.42 


.52 


.35 


.41 


.31 


.32 


.32 


.35 


.38 


.40 


.75 


.52 


.50 


.35 


.40 


.30 


.35 


.31 


.36 


.48 


.35 


.72 


.60 


.52 


.35 


.40 


.35 


.35 


.32 


.30 


.50 


.38 


.68 


.55 


.55 


.38 


.50 


.35 


.32 


.32 


.32 


.42 


.35 


.70 


.42 


.55 


.35 


.65 


.34 


.31 


.30 


.65 


.40 


.35 


.85 


.35 


.50 


.38 


.62 


.35 


.31 


.30 


.58 


.32 


.62 


.82 


.35 


.50 


.35 


.50 


.39 


.30 


.30 


.48 


.30 


.45 


.78 


.40 


.45 


.35 


.50 


.35 


.30 


.35 


.40 


.30 


.42 


.80 


.68 


.40 


.45 


.58 


.32 


.30 


.36 


.36 


.38 


.40 


.82 


.62 


.38 


.45 


.49 


.36 


.30 


.52 


.35 


.38 


.38 


.75 


.60 


.40 


.48 


.47 


.52 J 


.30 


.39 


.35 



0.42 
.38 
.55 
.42 
.38 

.35 
.58 
.48 
.40 
.36 

.35 



.32 
.32 



148 WATER RESOURCES OF HAWAII, 1912. 

Daily gage height, in feet, of Olowalu ditch No. 1 near Olowalu, Maui, for 1912 — Con. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 


0.38 
.35 
.32 
.35 
.35 

.38 
.35 
.35 
.45 
.35 

.32 
.30 
.25 
.25 
.30 
.32 


0.30 
.40 
.38 
.80 
.75 

.75 
.78 
.72 
.75 
.75 

.72 
.80 
.80 
.75 


0.70 

.78 
.75 
.70 
.78 

.75 
.70 
.68 
.62 

.55 

.58 
.58 
.58 
.62 
.78 
.80 


0.65 
.60 

.55 
.55 
.52 

.58 
.55 
.50 
.50 
.50 

.50 

.48 
.40 
.45 
.42 


0.42 
.45 

.48 
.42 
.42 

.45 

.45 
.40 
.45 
.38 

.55 
.64 
.58 
.58 
.45 
.45 


0.45 

.40 
.38 
.40 
.38 

.38 
.38 
.35 
.48 
.36 

.35 
.35 
.35 
.38 
.40 


0.48 

.45 
.45 
.41 
.40 

.44 
.44 
.44 
.44 
.42 

.41 
.40 
.40 
.37 
.34 
.30 


0.45 
.36 
.32 
.30 
.30 

.30 
.39 
.35 
.31 
.30 

.50 
.50 
.37 
.37 
.38 
.35 


0.29 
.29 
.29 
.30 
.30 

.30 
.30 
.30 
.29 
.27 

.29 
.30 
.32 

.37 

.51 


0.36 
.34 
.30 
.30 

.29 

.39 
.45 
.39 
.36 
.34 

.35 

.45 
.49 
.39 
.38 
.59 


0.49 

.58 
.60 
.56 
.52 

.58 
.62 
.58 
.49 

.44 

.42 
.38 
.38 
.35 
.36 


34 


17 


32 


18 


39 


19 




20. 


42 


21 


.52 


22 


.61 


23 


.60 


24 


.55 


25 


.58 


26 


.52 


27 


.45 


28 


.42 


29.. 


.40 


30 


.39 


31 


.36 







Daily discharge, in second-feet, of Olowalu ditch No. 1 near Olowalu, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


4.5 
4.5 
4.5 
4.9 
4.2 

4.2 
6.1 
6.5 
4.9 
4.5 

3.3 
3.0 
3.0 
4.2 

4.2 

4.2 
3.8 
3.3 
3.8 

3.8 

4.2 
3.8 
3.8 
5.5 
3.8 

3.3 
3.0 
2.5 
2.5 
3.0 
3.3 


3.3 

10.7 
14.8 
7.8 
5.5 

4.5 
3.8 
4.2 
3.8 
3.8 

9.7 
5.5 
4.9 
4.5 
4.2 

3.0 
4.5 
4.2 
17.0 
14.8 

14.8 
16.1 
13.4 
14.8 
14.8 

13.4 
17.0 
17.0 
14.8 


14.8 
17.0 
17.0 
14.8 
14.8 

14.8 
13.4 
11.8 
12.5 
19.5 

18.0 
16.1 
17.0 
18.0 
14.8 

12.5 
16.1 
14.8 
12.5 
16.1 

14.8 
12.5 
11.8 
9.7 

7.8 

8.5 
8.5 
8.5 
9.7 
16.1 
17.0 


14.8 
14.8 
16.1 
14.8 
4.9 

7.0 
9.0 
7.8 
4.9 
3.8 

3.8 
4.5 
11.8 
9.7 
9.0 

10.8 
9.0 
7.8 
7.8 
7.0 

8.5 
7.8 
6.5 
6.5 
6.5 

6.5 
6.1 
4.5 
5.5 
4.9 


4.9 
6.5 
5.5 
6.5 
7.0 

6.5 
7.0 
7.8 
7.8 
6.5 

6.5 
5.5 
4.5 
4.2 
4.5 

4.9 
5.5 
6.1 
4.9 
4.9 

5.5 
5.5 
4.5 
5.5 
4.2 

7.8 
10.4 
8.5 
8.5 
5.5 
5.5 


3.8 
3.8 
3.8 
3.8 
3.8 

3.8 
3.8 
4.2 
3.8 
4.2 

3.8 
3.8 

5.5 
5.5 
6.1 

5.5 
4.5 
•4.2 
4.5 
4.2 

4.2 
4.2 
3.8 
6.1 
3.9 

3.8 
3.8 
3.8 
5.2 
5.5 


5.5 
5.5 
5.5 
5.9 
5.7 

5.5 
5.5 
7.5 
12.2 
11.2 

7.5 
7.5 
9.9 
7.3 
6.9 

7.1 
6.5 
6.5 
5.7 
5.5 

6*3 
6.3 
6.3 
6.3 

5.9 

5.7 
5.5 
5.5 

5.0 

4.6 
4.0 


4.0 
4.2 
4.3 

4.8 
4.2 

4.0 
4.8 
4.8 

4.6 
4.8 

5.4 
4.8 
4.3 
4.9 
8.1 

6.5 
4.9 
4.3 
4.0 
4.0 

4.0 
5.4 
4.8 
4.2 
4.0 

7.5 
7.5 
5.0 
5.0 
5.2 
4.8 


4.3 
5.7 
5.0 
4.8 
4.3 

4.8 
4.8 
4.3 
4.2 
4.2 

4.0 
4.0 
4.0 
4.0 
4.0 

3.9 
3.9 
3.9 

4.0 
4.0 

4.0 
4.0 
4.0 
3.9 
3.7 

3.9 
4.0 
4.3 
5.0 

7.8 


5.2 
5.5 
4.3 
4.0 
4.3 

4.2 
4.3 
4.3 
4.0 
4.0 

4.0 
4.8 
4.9 
8.1 
5.4 

4.9 
4.6 
4.0 
4.0 
3.9 

5.4 
6.5 
5.4 
4.9 
4.6 

4.8 
6.5 
7.3 
5.4 
5.2 
10.2 


6.3 
5.2 

4.8 
4.8 
4.8 

4.9 
4.0 
4.3 
12.2 
9.9 

7.1 
5.5 
4.9 

4.8 
4.8 

7.3 
9.9 
10.5 
9.3 
8.1 

9.9 
11.2 
9.9 
7.3 
6.3 

5.9 
5.2 
5.2 
4.8 
4.9 


5.9 


2 


5.2 


3 


9.0 


4 


5.9 


5 


5.2 


6 


5.2 


7 


9.9 


8 


7.1 


9 


5.5 


10 


4.9 


11 


4.8 


12 


4.3 


13 


4.3 


14 


4.3 


15 


4.3 


16 


4.6 


17 


4.3 


18 


5.4 


19 


5.9 


20 


5.9 


21 


8.1 


22 


10.8 


23 


10.5 


24 


9.0 


25 


9.9 


26 


8.1 


27 


6.5 


28 


5.9 


29 


5.5 


30 


5.4 


31 


4.9 







ISLAND OF MAUI. 149 

Monthly discharge ofOlowalu ditch No. 1 near Olowalu, Maui, for 1912. 





Discharge in second-feet. 


Run-off 
(tttal in 
acre-feet). 


Accu- 


Month. 


Maximum. 


Minimum. 


Mean. 


racy. 




6.5 
17.0 
19.5 
16.1 
10.4 

6.1 
12.2 

8.1 

7.8 
10.2 
12.2 
10.8 


2.5 
3.0 
7.8 
3.8 
4.2 
3.8 
4.0 
4.0 
3.7 
3.9 
4.0 
4.3 


4.00 
9.33 
13.9 
8.08 
6.16 
4.36 
6.51 
4.94 
4.36 
5.13 
6.80 
6.34 


246.0 
537.0 
855.0 
481.0 
379.0 
259.0 
400.0 
304.0 
259.0 
315.0 
405.0 
390.0 


A. 




A. 




A. 




A. 




A. 




B. 


July . 


A. 




A. 




A. 


October 


A. 


November 


A. 




A. 








19.5 


2.5 


6.65 


4,830.0 









LAUNIUPOKO STREAM BASIN. 
LATJNIUPOKO STREAM NEAR LAHAINA, MAUL 

Location. — About 5J miles southeast of Lahaina, 1 mile above storage reservoir, and 

about 175 feet above ditch intake of Pioneer Mill Co. 
Records available. — July 25, 1911, to December 31, 1912. 

Gage. — Vertical staff; read twice daily, at 8.30 a. m. and 4.30 p.m.; datum unchanged. 
Channel. — Permanent . 

Discharge measurements. — Made by wading. 
Accuracy. — Records very good. 
Cooperation. — Station is maintained in cooperation with Pioneer Mill Co. 

Discharge measurements of Launiupoho Stream near Lahaina, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar. 3 
July 31 


J. B. Stewart 

do..- 

do 


Feet. 
0.69 
.41 
.40 


Sec.-ft. 

3.19 

1.03 

.93 


Sept. 10 
Nov. 23 
Dec. 14 


J. B. Stewart 

do 


Feet. 
0.40 
.42 
.41 


Sec.-ft. 
0.94 
1.11 


Sept. 10 


C.T.Bailey 


.97 



Daily gage height, in feet, of Launiupoho Stream near Lahaina, Maui, for 1912. 

[O. Brecht, observer.] 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


0.45 


0.45 


0.50 


0.55 


0.50 


0.45 


0.45 


0.40 


0.40 


0.40 


0.42 


.45 


.65 


.58 


.68 


.50 


.45 


.45 


.40 


.40 


.40 


.40 


.45 


.58 


.69 


.72 


.50 


.45 


.45 


.40 


.40 


.40 


.40 


.45 


.50 


.60 


.62 


.50 


.45 


.45 


.40 


.40 


.40 


.40 


.45 


.40 


.58 


.74 


.64 


.45 


.45 


.40 


.40 


.40 


.40 


.45 


.40 


.50 


.60 


.50 


.45 


.45 


.40 


.40 


.40 


.40 


.45 


.42 


.55 


.78 


.50 


.45 


.45 


.40 


.40 


.40 


.40 


.45 


.52 


.52 


.80 


.50 


.45 


.45 


.40 


.40 


.40 


.40 


.45 


.50 


.62 


.68 


.50 


.45 


.58 


.40 


.40 


.40 


.78 


.45 


.52 


.70 


.62 


.49 


.45 


.48 


.40 


.40 


.40 


.44 


.50 


.42 


1.15 


.60 


.49 


.45 


.45 


.42 


.40 


.48 


.40 


.50 


.45 


.64 


.64 


.49 


.45 


.45 


.40 


.40 


.40 


.40 


.48 


.45 


.55 


.60 


.49 


.45 


.45 


.40 


.40 


.40 


.40 


.45 


.45 


.50 


.67 


.47 


.45 


.45 


.40 


.40 


.40 


.40 


.45 


.45 


.50 


.60 


.47 


.45 


.45 


.40 


.40 


.40 


.40 



Dec. 



1. 
2. 
3. 
4 
5. 

6. 

7. 

8. 

9 

1Q 

11 
12 
13 
14 
15 



0.40 
.40 
.42 
.40 
.40 

.40 
.40 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 



150 WATER RESOURCES OP HAWAII, 1912. 

Daily gage height, in feet, of Launiupoko Stream near Lahaina, Maui, for 1912 — Contd. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 


0.45 

.45 
.45 
.45 
.45 

.45 
.45 
.45 
.45 
.45 

.45 
.45 
.45 
.45 
.45 
.45 


0.45 

.45 
.45 

.58 
.82 

.72 
.60 
.50 
.65 
.50 

.50 
.85 
.60 
.50 


0.50 

.58 
.60 
.55 
.52 

.52 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.50 
.60 
.64 


0.62 

.60 
.60 
.58 
.52 

.50 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.50 
.50 


0.45 

.45 
.45 
.45 
.45 

.45 
.45 
.45 
.47 
.45 

.50 
.60 
.54 
.50 
.50 
.48 


0.45 

.45 
.45 
.40 
.40 

.42 
.45 
.45 
.45 
.45 

.45 
.45 
.45 
.45 
.45 


0.45 

.45 

.45 
.45 
.45 

.45 
.42 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 
.40 


0.40 

.40 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 

.45 
.40 
.40 
.40 
.40 
.40 


0.40 

.40 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 

.40 
.40 
.40 
.44 
.40 


0.40 
.40 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 

.42 
.40 
.40 
.40 
.40 
.60 


0.40 

.48 
.48 
.42 
.42 

.57 
.44 
.42 
.40 
.40 

.40 
.40 
.40 
.40 
.40 


0.40 


17 


.40 


18 


.40 


19 


.42 


20 


.40 


21 


.48 


22 


.70 


23 


.70 


24 : . . 


.42 


25 


.40 


26 


.40 


27 


.40 


28 


.40 


29 


.40 


30 


.40 


31 


.40 







Daily discharge, in second-feet, of Launiupoko Stream near Lahaina, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.3 
1.3 
1.3 

1.3 
1.3 

1.3 
1.3 
1.3 
1.3 
1.3 

1.6 
1.6 
1.5 
1.3 
1.3 

1.3 
1.3 
1.3 
1.3 
1.3 

1.3 
1.3 
1.3 
1.3 
1.3 

1.3 
1.3 
1.3 
1.3 
1.3 
1.3 


1.3 
2.8 
2.2 
1.6 
1.0 

1.0 
1.1 

1.8 
1.6 
1.8 

1.1 
1.3 
1.3 
1.3 
1.3 

1.3 
1.3 
1.3 
2.2 
4.5 

3.5 
2.4 
1.6 
2.8 
1.6 

1.6 
4.8 
2.4 
1.6 


1.6 
2.2 
3.2 
2.4 
2.2 

1.6 
2.0 
1.8 
2.6 
3.3 

8.2 
2.8 
2.0 
1.6 
1.6 

1.6 
2.2 
2.4 

2.0 
1.8 

1.8 
1.6 
1.6 
1.6 
! 1.6 

1.6 
1.6 
1.6 
1.6 
2.4 
2.8 


2.0 
3.1 
3.5 
2.6 
3.7 

2.4 
4.1 
4.3 
3.1 
2.6 

2.4 
2.8 
2.4 
3.0 

2.4 

2.6 
2.4 
2.4 

2.2 
1.8 

1.6 
1.6 
1.6 
1.6 
1.6 

1.6 
1.6 
1.6 
1.6 
1.6 


1.6 
1.6 
1.6 
1.6 
2.8 

1.6 
1.6 
1.6 
1.6 
1.5 

1.5 
1.5 
1.5 
1.4 
1.4 

1.3 
1.3 
1.3 
1.3 

1.3 

1.3 
1.3 
1.3 
1.4 
1.3 

1.6 
2.4 
1.9 
1.6 
1.6 
1.5 


1.3 
1.3 
1.3 
1.3 

1.3 

1.3 

1.3 
1.3 
1.3 
1.3 

1.3 
1.3 
1.3 
1.3 
1.3 

1.3 
1.3 
1.3 
1.0 
1.0 

1.1 
1.3 
1.3 
1.3 
1.3 

1.3 
1.3 
1.3 
1.3 
1.3 


1.3 
1.3 
1.3 
1.3 
1.3 

1.3 
1.3 
1.3 
2.2 
1.5 

1.3 
1.3 
1.3 
1.3 
1.3 

1.3 
1.3 
1.3 

1.3 
1.3 

1.3 
1.1 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 
1.0 


1.0 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 

1.1 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 

1.3 
1.0 
1.0 
1.0 
1.0 
1.0 


1.0 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.2 
1.0 




1:0 

1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 

1.5 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 

1.1 

1.0 
1.0 
1.0 
1.0 
,4 


1.1 

1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
1.0 
4.1 
1.2 

1.0 
1.0 
1.0 
1.0 
1.0 

1.0 
1.5 
1.5 

1.1 
1.1 

2.2 
1.2 
1.1 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 


1.0 


2 


1.0 


3 


1.1 


4 


1.0 


5 '. 


1.0 


6 


1.0 


7 


1.0 


8 . 


1.0 


9 


1.0 


10 


1.0 


11 


1.0 


12 


1.0 


13 


1.0 


14 


1.0 


15 


1.0 


16 


1.0 


17 


1.0 


18 


1.0 


19 


1.1 


20 

21 


1.0 
1.5 


22.... 


3.3 


23 


3.3 


24 


1.1 


25 


1.0 


26 


1.0 


27 


1.0 


28 


1.0 


29 


1.0 


30 


1.0 


31 


1.0 







ISLAND OF MAUI. 151 

Monthly discharge of Launiwpoho Stream near Lahaina, Maui, for 1912. 





Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Month: 


Maximum. 


Minimum. 


Mean. 


racy. 




1.6 
4.8 
8.2 
4.3 
2.8 
1.3 
2.2 
1.3 
1.2 
2.4 
4.1 
3.3 


1.3 
1.0 
1.6 
1.6 
1.3 
1.0 
1.0 
1.0 
1.0 
1.0 
1.0 
1.0 


1.33 

1.91 
2.22 
2.39 
1.55 
1.27 
1.24 
1.01 
1.01 
1.06 
1.20 
1.17 


81.8 
110.0 
136.0 
142.0 
95.3 
75.6 
76.2 
62.1 
60.1 
65.2 
71.4 
71.9 


B. 




B. 




B. 




B. 




B. 




B. 


July 


B. 




B. 




B. 




B. 




B. 




B. 






The year 


8.2 


1.0 


1.45 


1,050.0 









KAUAULA STREAM BASIN. 
KAUAULA STREAM NEAR LAHAINA, MAUI. 

Location. — About 3 miles east of Lahaina, 200 feet above Kauaula ditch intake, 

which is the uppermost diversion. 
Records available. — March 7 to December 31, 1912; also discharge measurements 

in 1911. 
Gage. — Vertical staff; read twice daily, at 6 a. m. and 4 p. m. 
Channel. — Practically permanent. 
Discharge measurements. — Made by wading at low-water stages in Kauaula 

ditch, which carries all the normal flow. 
Accuracy. — Records good. 
Cooperation. — Station is maintained in cooperation with the Pioneer Mill Co. 

Discharge measurements of Kauaula Stream near Lahaina, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


June 27 


J. B. Stewart 


Feet. 

0.21 

.16 

.12 

.09 


Sec.-ft. 
7.18 


Aug. 1 
Sept. 11 
Dec. 13 


..do 


6.00 


do 


5.71 


C. T. Bailey 


6.05 









Daily gage height, in feet, of Kauaula Stream near Lahaina, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 








0.98 

.75 
.75 
.75 
.98 

.98 
.98 
.98 
.90 

.85 

.78 
.78 
.73 
.72 
.70 


0.28 
.43 
.28 
.28 
.33 

.45 
.40 
.43 
.23 

.23 

.25 
.23 
.23 
.23 
.23 


0.25 
.25 
.25 
.25 
.25 

.20 
.20 
.30 
.23 
.23 

.23 
.23 
.23 
.23 

.25 


0.20 

.17 
.17 
.17 
.20 

.17 
.17 
.15 
.55 
.27 

.20 
.20 
.23 
.17 
.17 


0.15 
.15 
.15 
.12 
.12 

.12 
.17 
.15 
.20 
.35 

.20 
.20 

.17 
.27 
.27 


0.12 
.17 
.17 
.12 
.12 

.15 
.31 
.15 
.12 
.12 

.12 
.12 
.12 
.12 
.12 


0.20 

.17 
.17 
.17 
.17 

.17 
.20 
.17 
.17 
.17 

.17 
.17 
.17 
.23 
.20 


0.30 

.20 
.17 
.17 
.17 

.17 
.17 
.15 
.30 
.30 

.20 
.16 
.15 
.15 
.15 


20 


2 








.23 


3 








.25 


4 








.13 


5 








.13 


6 








.13 


7 






0.95 
.77 
.85 
.75 

1.50 
1.00 
1.00 
.78 
.52 


.20 


8 






.17 


9 






.17 


10 






.12 


11 






.12 


12 






.12 


13 






12 


14 






12 


15 






.12 



152 WATER RESOURCES OF HAWAII, 1912. 

Daily gage height, in feet, of Kauaula Stream near Lahaina, Maui, for 1912 — Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 






0.45 

.45 
.80 
.52 
.50 

.48 
.45 
.45 
.45 
.45 

.40 
.40 
.37 
.45 
1.25 
1.15 


0.85 
.73 

.72 
.55 
.43 

.43 
.38 
.40 
.37 
.33 

.40 
.34 
.31 
.38 
.30 


0.23 
.23 

.23 

.28 
.28 

.23 
.23 
.23 
.23 
.23 

.23 
.80 
.35 
.28 
.25 
.25 


0.23 
.23 
.23 
.20 
.20 

.20 
.23 
.23 
.38 

.28 

.23 
.23 
.23 
.20 
.20 


0.17 
.17 
.17 
.17 
.17 

.17 

.17 
.17 
.17 
.17 

.17 
.17 
.15 
.15 
.15 
.15 


0.27 
.20 
.17 
.17 
.25 

.20 
.20 
.17 
.17 
.17 

.17 
.27 
.20 
.20 
.17 
.17 


0.12 
.10 
.10 
.10 
.12 

.12 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.12 
.53 


0.17 

.17 
.17 
.17 
.17 

.17 
.17 
.15 
.12 
.12 

.30 

.30 

.18 

• .20 

.17 
.90 


0.15. 
.40 
.15 
.28 
.15 

.20 
.30 
.30 
.15 
.18 

.18 
.15 
.15 
.15 
.15 


12 


17 






75 


18 






.75 

.20 
.13 

.17 

1 20 


19 






20 






21 






22 






23 






1.10 
.30 
.23 

.30 


24 






25 






26 












.23 

.15 

.15 

15 


28 






29 






30 












.15 











KATTATTLA DITCH NEAR LAHAINA, MAUI. 

Location. — About 3 miles east of Lahaina. It is 100 feet below ditch intake, which 

is uppermost on the stream. 
Records available.— October 16, 1911, to December 31, 1912. 

Gage. — Vertical staff; read twice daily, at 6 a. m. and 4 p. m.; datum unchanged. 
Channel. — Straight wooden flume, 3 feet wide. 
Discharge measurements. — Made in flume at gage. 
Accuracy. — Very good. 
Cooperation. — Station maintained in cooperation with Pioneer Mill Co. 

Discharge measurements of Kauaula ditch near Lahaina, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 




J. B. Stewart 


Feet. 
0.45 
.78 
.71 
.68 
.75 
.65 


Sec.-ft. 
2.82 




do i 


7.18 


Aug. .1 
Sept. 11 
Nov. 25 


...do 


6.00 


...do 


5.71 


do 


6.91 


Dec. 13 


C . T. B ailey 


6.05 









Daily gage height, in feet, of Kauaula ditch near Lahaina, Maui, for 1912. 
[Nakayama, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.45 

.45 
.45 
.45 
.45 

.45 
.45 
.45 
.45 
.45 


0.45 
.45 

.45 
.45 
.45 

.45 
.45 
.45 
.45 
.45 


1.05 
1.05 
1.05 
1.05 
1.05 

1.05 
1.05 
1.05 
1.05 
1.20 


1.05 
.75 
.75 
.75 

1.14 

1.11 
1.70 
1.15 
1.08 
.95 


0.88 

1.05 

.88 

.88 

1.00 

1.10 

.93 

1.10 

.87 
.86 


0.80 
.80 
.80 
.80 
.80 

.78 
.78 
.93 
.83 
.80 


0.75 

.72 
.72 
.72 
.72 

.75 

.75 

.70 

1.15 

.82 


0.70 

.70 
.70 
.68 
.67 

.67 
.70 
.67 
.90 
.90 


0.67 
.70 
.70 
.70 
.70 

.70 
1.02 
.70 
.70 
.70 


0.71 
.85 
.70 
.70 
.70 

.70 
.70 
.75 
.70 
.70 


1.00 
.80 
.73 

.70 
.70 

.70 

.70 

.70 

1.00 

1.00 


0.70 


2 


.95 


3 


1.00 


4 


1.02 


5 


.82 


6 


.72 


7 


.75 


8 


.92 


9 


.80 


10 


.75 



ISLAND OF MAUI. 153 

Daily gage height, in feet, of Kauaula ditch near Lahaina, Maui, for 1912 — Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


11 


0.45 
.45 

.45 
.45 
.45 

.45 
.45 
.45 
.45 

.45 

.45 
.45 
.45 
.45 
.45 

.45 

.45 
.45 
.45 
.45 
.45 


0.95 

.95 

.96 

1.00 

1.00 

1.10 
1.10 

.89 
.85 
.85 

.93 

.97 

1.05 

1.05 

1.05 

1.10 

1.10 

.99 

.95 


1.05 
1.05 
1.05 
1.05 
1.00 

.93 

.93 

.95 

1.05 

1.05 

1.05 

.97 
.90 
.87 
.85 

.83 
.83 
.85 
.80 
.90 
1.10 


0.75 
1.05 
1.10 
1.10 
1.10 

1.10 

.1.10 

1.05 

.98 

.90 

.90 
.90 

.87 
.98 
.95 

.98 
.93 
.90 
.90 
.90 


0.83 
.83 

.83 
.83 
.80 

.80 
.80 

!90 

.80 

.90 
.80 
.80 
.80 
.80 

.80 
1.20 
.95 
.83 
.80 
.80 


0.80 

.77 
.75 
.70 
.83 

.77 
.75 
.70 
.70 
.70 

.73 
.73 
1.20 
.80 
.73 

.75 
.75 
.75 
.73 
.73 


0.75 

.75 
.75 
.70 
.70 

.70 
.75 
.70 
.70 
.70 

;.70 
T70 
.70 
.70 
.70 

.70 
.70 
.70 
.70 
.70 
.70 


0.70 
.70 
.70 
.75 
.90 

.90 
.88 
.70 
.70 
.80 

.72 
.70 
.70 
.70 
.70 

.80 
.70 
.70 
.70 
.70 
.70 


0.70 
.70 
.70 
.67 
.67 

.67 
.65 
.65 
.65 
.73 

.70 
.67 
.67 
.67 
.67 

.65 
.65 
.70 
.70 
1.20 


0.70 
.70 
.70 
.70 

1.05 

.86 
.70 
.70 
.70 
.67 

.70 
.70 
.72* 
.63 
.63 

1.00 
1.00 
.85 
.90 
1.20 
1.10 


0.80 

.80 
.70 
.70 
.67 

.67 
1.38 
.67 
.88 
.68 

.72 
.90 
.90 
.70 
.67 

.67 
.65 
.63 
.63 
.63 


0.75 


12 


.75 


13 '.. 


.73 


14 


.70 


15 


.70 


16 


.70 


17 


.67 


18 


.68 


19 


.95 


20 


.80 


21 


.77 


22 


1.40 


23 


1.15 


24 


1.15 


25 


.90 


26 


1.00 


27 


.88 


28 


.85 


29 


.84 


30 


.82 


31 


.80 







Daily discharge, in second-feet, of Kauaula ditch near Lahaina, Maui, for 1912. 



Day. 



Jan. 



2.8 
2.8 
2.8 
2.8 
2.8 

2.8 

2.8 
2.8 
2.8 
2.8 

2.8 

2.8 
2.8 
2.8 
2.8 

2.8 
2.8 
2.8 
2.8 
2.8 

2.8 
2.8 
2.8 
2.8 
2.8 

2.8 

2.8 
2.8 
2.8 
2.8 
2.8 



Feb. 



2.8 
2.8 
2.8 
2.8 
2.8 

2.8 
2.8 
2.8 
2.8 
2.8 

10.1 
10.1 
10.3 
11.0 
11.0 

12.8 
12.8 
9.0 
8.4 
8.4 

9.7 
10.5 
11.9 
11.9 
11.9 

12.8 
12.8 
10.8 
10.1 



Mar. 



11.9 
11.9 
11.9 
11.9 
11.9 

11.9 
11.9 
11.9 
11.9 
14.6 

11.9 
11.9 
11.9 
11.9 
11.0 

9.7 
9.7 
10.1 
11.9 
11.9 

11.9 

10.5 
9.2 
8.7 
8.4 

8.0 

8.0 
8.4 
7.5 
9.2 
12.8 



Apr. 



11.9 
6.8 



13.5 

13.0 
23.6 
13.7 
12.4 
10.1 



11.9 

12.8 
12.8 
12.8 

12.8 
12.8 
11.9 
10.6 
9.2 

9.2 
9.2 
8.7 
10.6 
10.1 

10.6 
9.7 
9.2 
9.2 
9.2 



May. 



11.9 
8.9 
8.9 

11.0 

12.8 
9.7 

12.8 
8.7 
8.5 

8.0 
8.0 
8.0 
8.0 
7.5 

7.5 
7.5 
7.5 
9.2 
7.5 

9.2 
7.5 
7.5 
7.5 

7.5 

7.5 
14.6 
10.1 
8.0 
7.5 
7.5 



June. 



7.5 
7.5 
7.5 
7.5 
7.5 

7.2 
7.2 
9.7 
8.0 
7.5 

7.5 
7.0 
6.8 
6.0 
8.0 

7.0 
6.8 
6.0 
6.0 
6.0 

6.4 
6.4 
14.6 
7.5 
6.4 

6.8 



July. 



6.3 
6.3 
6.3 
6.3 



6.0 
13.7 

7.8 



6.0 
6.0 



6.0 
6.0 
6.0 

6.0 
6.0 
6.0 
6.0 
6.0 

6.0 
6.0 
6.0 
6.0 
6.0 
6.0 



Aug. 



6.0 
6.0 
6.0 
5.7 
5.6 



6.0 
5.6 
9.2 
9.2 

6.0 
6.0 
6.0 
6.8 
9.2 

9.2 
8.9 
6.0 
6.0 
7.5 

6.3 

6.0 
6.0 
6.0 
6.0 

7.5 
6.0 
6.0 
6.0 
6.0 
6.0 



5.6 
6.0 
6.0 
6.0 
6.0 

6.0 
11.4 
6.0 
6.0 
6.0 

6.0 

6.0 
6.0 
5.6 
5.6 

5.6 
5.3 
5.3 
5.3 

6.4 



5.6 
5.6 

5.3 
5.3 
6.0 
6.0 
14.6 



Oct. 



6.2 
8.4 
6.0 
6.0 
6.0 

6.0 
6.0 
6.8 
6.0 
6.0 

6.0 
6.0 
6.0 
6.0 
11.9 

8.5 
6.0 
6.0 
6.0 
5.6 

6.0 

6.0 
6.3 
5.0 
5.0 

11.0 

11.0 
8.4 
9.2 
14.6 
12.8 



Nov. 



11.0 
7.5 
6.4 
6.0 
6.0 

6.0 
6.0 
6.0 
11.0 
11.0 

7.5 
7.5 
6.0 
6.0 
5.6 

5.6 
17.8 
5.6 
8.9 
5.7 



9.2 
9.2 
6.0 
5.6 

5.6 
5.3 
5.0 
5.0 
5.0 



154 WATER RESOURCES OF HAWAII, 1912. 

Monthly discharge of Kauaula ditch near Lahaina, Maui, for 1912. 



Month. 



Discharge In second-feet. 



Maximum. Minimum. Mean. 



Run-oft 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



23.6 



2.8 
2.8 
7.5 
6.8 
7.5 
6.0 
6.0 
5.6 
5.3 
5.0 
5.0 
5.6 



2.8 



2.80 
8.08 
10.8 
10.5 
8.62 
7.29 
6.53 
6.29 
6.26 
7.31 
7.18 
8.51 



7.51 



172.0 
465.0 
664.0 
625.0 
530.0 
434.0 
402.0 
387.0 
372.0 
449.0 
427.0 
523.0 



5,450.0 



LAHAINALUNA STREAM BASIN. 
LAHAINALUNA STREAM NEAR LAHAINA, MATJI. 

Location. — About 1J miles northeast of Lahaina, one-fourth mile above Lahainaluna 

Seminary, and 8 feet above Pioneer Mill Co. 'a upper ditch intake. 
Records available. — August 5, 1911, to December 31, 1912. 

Gage. — Vertical staff; read twice daily, at 6 a. m. and 4 p. m.; datum unchanged 
Channel. — Shifting. 

Discharge measurements. — Made by wading. 
Cooperation. — Station maintained in cooperation with Pioneer Mill Co. 

Discharge measurements of Lahainaluna Stream near Lahaina, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 




J. B. Stewart 


Feet. 
0.20 
.16 


Sec-feet. 
1.42 


Dec. 13 


C. T. Bailey 


1.28 









Daily gage height, in feet, of Lahainaluna Stream near Lahaina, Maui, for 1912. 

[Kawashima, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.25 
.26 

.22 
.22 
.24 

.21 
.21 
.25 
.24 
.21 

.22 
.22 
.21 
.21 
.21 

.21 
.21 
.20 
.18 
.18 


0.17 

.28 
.26 
.20 
.20 

.19 
.18 
.18 
.18 
.24 

.18 
.18 
.18 
.17 
.17 

.17 
.17 
.17 
.72 
1.35 


0.20 
.36 
.38 
.24 
.22 

.21 
.32 

.26 
.42 
.28 

1.00 
.36 
.32 
.20 
.20 

.20 
.70 
.52 
.21 
.29 


0.55 
.72 
.53 
.48 

1.16 

.86 
1.36 
.96 
.64 
.56 

.35 
.33 
.32 
.60 
.22 

.21 
.23 
.22 
.20 
.20 


0.22 
.34 
.19 
.31 
.41 

.45 
.20 
.40 
.20 
.20 

.20 
.19 
.18 
.18 
.18 

.18 
.18 
.18 
.29 
.20 


0.20 
.19 

.18 

.18 

• .70 

.16 
.16 
,16 
.28 
.19 

= 18 
.18 
.18 
.20 
.22 

.24 
.22 
.18 
.20 
.22 


0.25 
.21 
.25 
.38 
.24 

.16 
.20 
.16 
-58 
.20 

.20 
.18 
.25 
.19 

.17 

.18 

.18 
.16 
.16 
.15 


0.16 
.16 
.16 
.16 
.16 

.15 
.15 
.19 

.28 
.42 

,60 
.32 
,15 
.15 
.35 

.24 
.22 
.10 
.10 
.10 


0.25 
.80 
.19 
.22 
.12 

.86 
.49 
.14 
.15 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.12 
.12 
.14 
.13 


0.36 
.30 
.14 
.10 
.10 

.12 
.12 
.22 
.12 
.13 

.13 
.12 
.15 
.26 
.12 

.13 
.12 
.12 
.12 

.12 


0.24 
.12 
.12 
.11 
.13 

.13 
.12 

.21 

2.00 

.38 

.45 
.26 
.20 
.15 
.15 

.32 
.48 
.52 
.40 
.88 


0.28 


2 


.24 


3 


.30 


4 


.20 


5 


.20 


6 


.13 


7 


.32 


8 


.15 


9 


.15 


10 


.15 


11 


.15 


12 


.14 


13 


.14 


14 


.14 


15 


.18 


16 


.18 


17 


.18 


18 


.15 


19 


.28 


20 


.24 



ISLAND OF MAUI. 



155 



Daily gage height, in feet, of Lahainaluna Stream near Lahaina, Maui, for 1912 — Contd. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


21 


0.18 
.18 
.18 
.18 
.18 

.18 
.18 
.18 
.17 
.17 
.17 


1.95 

1.45 

.60 

.38 

.36 

.35 
1.80 
.54 

.22 


0.20 
.20 
.18 
.18 
.17 

.17 
.15 
.15 
.19 

.45 
.54 


0.20 
.32 
.21 
.30 
.64 

.38 
.24 
.22 
.20 

.22 


0.52 
.30 
.22 
.29 
.20 

.36 
.92 
.41 
.21 

.20 
.20 


0.60 

.20 
.21 
.45 
.20 

.20 
.18 
.18 
.18 

.18 


0.18 
.18 
.18 
.36 
.19 

.15 
.24 
.16 
.16 
.18 
.15 


0.10 
.24 
.15 
.10 
.10 

.14 
.10 
.16 

.22 
.28 
.25 


0.13 
.13 
.13 
.13 
.14 

.14 
.14 
.14 

.22 
.56 


0.32 

.30 
.40 
.16 
.11 

.60 
.55 
.28 
.18 
.33 
1.65 


0.40 
.28 
.30 
.14 
.15 

.12 
.12 
.19 
.19 
.19 


0.86 


22 


1.45 


23 


1.12 


24 


.34 


25 

26 


.27 
.80 


27 


.28 


28 


.24 


29 


.27 


30 


.32 


31 


.26 







KAHOMA STREAM BASIN". 
KAHOMA STREAM NEAR LAHAINA, MATTI. 

Location. — About 3J miles above Lahaina, 500 feet below email dam that diverts 
all low-water flow, and 125 feet above concrete dam for Pioneer Mill Co.'s upper 
ditch. 

Records available. — August 3, 1911, to December 31, 1912. 

Gage. — Vertical staff; read twice daily, at 7 a. m. and 3 p. m.; datum unchanged. 

Channel. — Liable to shift. 

Discharge measurements. — Made by wading. 

Accuracy. — No discharge rating has been obtained. 

Cooperation. — Station maintained in cooperation with Pioneer Mill Co. 
The following discharge measurement was made by C. T. Bailey: 
December 13, 1912: Gage height, 0.40 foot; discharge, 0.16 second-foot. 

Daily gage height, in feet, of Kahoma Stream near Lahaina, Maui, for 1912. 
[E. C. Bortfeld, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


























2 


























3 






0.75 


0.80 

.80 

1.00 

.80 
1.20 
1.55 

.90 
1.00 


0.70 
.75 
















4 




















5 






















6 
















0.75 








7 








.75 








0.65 






8 
















3.25 




9 












0.90 










10 






.95 
.70 












.70 




11 




















12 






.80 


















13 
























14 








.95 








0.65 










15 






.70 
















16 




















1.25 

.70 

1.00 




17 
























18 
























19 




0.85 
1.10 

1.95 
1.15 


.75 
















"6.70 


20 






















21 


















.80 
1.05 


2.10 


1.45 


22 


















1.45 


23 


















1.35 


24 












0.85 














26.... 




.90 




i.66 
















26 




1.15 

.85 






.65 








.75 


27 




1.10 
.80 


















28 
















.70 






29 






















30 






1.05 
3.00 




















31 


















1.75 





























Note.— On days for which gage heights are not given there was no discharge at station, all low-water 
flow being diverted at dam 500 feet above. 



156 



WATER RESOURCES OP HAWAII, 1912. 



KAHOMA DITCH AT WEIR NEAR LAHAINA, MAUI. 

Location. — About 3 J miles above Lahaina at portal of the lower of two development 

tunnels of Pioneer Mill Co. 
Records available. — August 1, 1911, to December 31, 1912. 
Gage. — Staff; read twice daily, at 7 a. m. and 3 p.m.; datum unchanged. 
Discharge measurements. — By 4-foot sharp-crested weir with end contractions, 

measuring discharge from development tunnel and amount diverted by small 

pipe from stream. 
Cooperation. — Records kept by Pioneer Mill Co. 

Discharge measurements of Kahoma ditch at weir near Lahaina, Maui, in 1912. 



Date. 



Hydrographer. 



Gage 
height. 



Dis- 
charge. 



Aug. 1 
Dec. 13 



J. B. Stewart. 
C.T.Bailey.. 



Inches. 
5.1 
4.4 



Sec-feet. 
3.58 
2.98 



Daily discharge, in second-feet, of Kahoma ditch at weir near Lahaina, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


4.71 
5. 58 
4.99 
4.43 
4.43 

4.43 
4.43 
4.99 
5.29 
4.43 

4.43 
4.29 
4.29 
4.16 
4.16 

4.16 
4.16 
1.16 
4.16 
4.16 

4.16 
4.16 
4.16 
4.16 
4.16 

4.02 
4.02 
4.02 
3.89 
4.02 
4.02 


3.89 

5.58 
6.66 
4.99 
4.16 

3.89 
3.89 
3.89 
3.89 
3.89 

5.58 
4.02 
3.89 
3.89 
3.76 

3.76 
3.76 
3.76 
7.30 
8.14 

8.65 
8.14 
5.58 
7.14 

7.47 

7.47 
8.14 
7.80 
5.14 


6.66 
7.14 
7.14 
5.58 
4.71 

6.19 

6.98 
5.14 
6.50 

7.47 

7.64 
6.82 
4.71 
4.16 
7.47 

4.02 
3.89 
6.04 
7.64 
4.71 

4.57 
6.04 
4.16 
4.02 
3.76 

4.43 

3.89 
3.89 
4.71 
7.97 
7.14 


6.19 
6.19 

6.98 
6.98 
7.80 

7.14 
8.65 
8.65 
7.97 
7.80 

5.58 
7.14 
4.99 
7.47 
5.14 

6.19 

6.50 
5.29 
5.73 
6.19 

4.85 
6.50 
6.50 
5.58 
7.97 

6.82 
5.29 
4.16 
3.89 
3.89 


6.19 

3.89 
7.30 
7.14 
6.50 

4.16 
7.80 
4.29 
3.89 
3.76 

3.76 
3.63 
3.63 
3.63 
3.63 

3.63 
3.63 
6.19 
5.43 
6.66 

4.16 
3.76 
4.43 
3.89 
5.73 

7.80 
7.14 
5.14 
3.89 
4.16 
3.76 


3.76 
3.78 
3.63 
3.63 
3.50 

3.50 
3.50 
3.63 
3.89 
4.57 

3.89 
3.76 
5.73 
4.43 
5.14 

5.14 
4.43 
4.16 
4.85 
4.02 

5.58 
4.16 
5.88 
7.47 
4.71 

4.43 
4.02 
3.89 
3.89 
3.89 


4.85 
6.50 
6.50 
5.14 
5.14 

4.57 
4.43 
4.02 
7.47 
4.71 

4.43 
4.16 
5.88 
4.43 
4.29 

4.16 
4.16 
4.16 
4.02 
4.02 

4.16 
4.16 
4.16 
7.30 
4.29 

4.16 
4.16 
4.43 
4.29 
4.16 
4.16 


4.02 
4.02 
4.02 
3.89 
3.89 

3.89 
4.43 
4.71 
6.19 
4.71 

6.50 
4.85 
4.29 
6.19 
6.66 

6.04 
4.16 
4.02 
3.89 
3.89 

3.89 
4.16 
4.16 
3.89 
3.89 

6.19 
4.99 
4.02 
6.50 
5.58 
5.58 


4.85 
7.14 
4.99 
4.16 

4.71 

6.82. 
6.50 
4.16 
4.71 
3.89 

3.89 
3.76 
3.76 
3.76 
3.63 

3.63 
3.63 
3.50 
3.50 
3.50 

3.63 

3.63 
3.50 
3.50 
3.50 

3.50 
3.50 
3.37 
4.71 
4.71 


6.19 

4.02 
4.02 
3.63 
5.14 

3.89 
5.88 
4.43 
3.63 
3.89 

3.37 

4.71 
3.63 
6.19 
3.63 

3.50 
3.37 
3.24 
3.24 
3.24 

6.50 
7.47 
6.19 
4.43 
3.63 

6.50 
6.50 
6.82 
3.89 
5.88 
8.14 


4.71 
3.89 
3.63 
3.37 
3.37 

3.37 
3.37 
3.37 

8.65 
5.88 

6.82 
3.76 
3.37 
3.37 
3.37 

7.47 
6.35 
7.47 
5.88 
4.43 

7.80 
4.99 
5.29 
3.89 
3.37 

3.24 
3.12 
3.12 
3.12 
3.12 


6.35 


2 


3.89 


3 


5.88 


4 


3.63 


5 


3.12 


6 


3.12 


7 


5.58 


8 


4.43 


9 


3.24 


10 


3.12 


11 


3.00 


12 


3.00 


13 


3.00 


14 


3.00 


15 


3.50 


16... 


3.00 


17 


2.88 


18 


5.14 


19 


6.66 


20 


5.14 


21 


7.14 


22 


7.80 


23 


7.64 


24 


5.58 


25 


5.29 


26 


6.19 


27 


4.43 


28 


4.99 


29 


3.63 


30 


5.88 


31 


4.16 







Note.— Daily discharge computed from formula Q-=3.33 LHa, L=4 feet; H=mean of two daily readings. 



ISLAND OF MAUI. 157 

Monthly discharge of Kdhoma ditch at weir near Lahaina, Maui, for 1912. 



Month. 



January 

February 

March 

April.. 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



Discharge in second-feet. 



Maximum. Minimum 



5.58 
8. 65 
7.97 
8.65 
7.80 
7.47 
7.47 
6.66 
7.14 
8.14 
8.65 
7.80 



65 



3.89 
3.76 
3.76 
3.89 
3.63 
3.50 
4.02 
3.89 
3.37 
3.24 
3.12 
2.88 



2.88 



4.34 
5.45 
5.65 
6.33 
4.92 
4.36 
4.72 
4.75 
4.20 
4.80 
4.57 
4.63 



.89 



Run-off 
(total in 
acre-feet). 



267 
313 
347 
377 
303 
259 
290 
292 
250 
295 
272 
285 



3,550 



HONOKAWAI STREAM BASIN. 
HONOKAWAI DITCH NEAR LAHAINA, MAUI. 

Location. — About 7 miles northeast of Lahaina, 2 miles above Pioneer Mill Co.'s 
power house, 1,000 feet below intake, and 250 feet below junction with Amalu 
wooden flume. 

Records available. — July 1 to December 31, 1912. 

Gage. — A graduated rod-gage, placed in the center of flume each time a reading is 
desired; read twice daily, at 7.30 a. m. and 3 p. m. 

Channel. — Galvanized-iron semicircular flume. 

Discharge measurements. — Made in flume near gage. 

Accuracy. — No discharge rating yet available. 

Cooperation. — Station is maintained in cooperation with Pioneer Mill Co. 

Discharge measurements of HonoJcawai ditch near Lahaina, Maui, in 1912, 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Tune 28 


J. B. Stewart 


Feet. 

0.98 

.98 

.95 

.91 


Sec-feet. 
5.37 


Sept. 12 
Nov. 26 


do 


6.03 


do 


4.98 


Dec. 17 


C. T. Bailey 


5.21 









Daily gage height, in feet, of Honohawai ditch near Lahaina, Maui, for 1912. 



Day. July. Aug. Sept. Oct. Nov. Dec. Day. July. Aug. Sept. Oct. Nov. Dec 



1. 

2. 
3. 
4. 
5. 

6. 

7. 
8. 
9. 
10. 

11. 
12. 
13. 
14. 
15. 



1.01 
1.00 
1.00 
1.00 
1.00 

1.00 
1.06 
1.06 
1.32 
1.42 

1.08 
1.10 
1.08 
1.12 
1.50 



1.00 
1.50 
1.04 
1.06 
1.02 

1.02 
1.38 
1.01 
1.05 
1.00 

1.00 



1.32 
1.02 
1.01 
1.00 
1.04 

1.02 
.98 
1.02 
1.00 
1.00 

1.14 
1.06 
1.04 
1.30 
1.16 



1.03 
1.00 



.97 



.99 
1.65 
1.14 



.97 



1.14 
1.28 
1.56 
1.01 
.96 

.96 
1.24 
1.33 
1.00 

.97 



1.04 
1.04 



1.06 
1.00 
1.00 
1.00 
1.30 

1.10 

1.03 
1.28 
1.02 
1.00 

1.00 
1.02 
1.04 
1.01 
1.01 
1.02 



1.35 

1.08 
1.01 
1.00 
1.00 

1.00 
1.12 
1.02 
1.00 
1.00 

1.32 
1.15 
1.01 
1.18 
1.10 
1.04 



.98 



.99 



1.04 
1.02 



1.01 
1.15 
1.21 



.99 
.99 



.97 
1.12 



1.38 
1.40 
1.46 
1.00 
1.27 
1.62 



1.62 
1.63 
1.66 
1.24 
1.13 

1.35 
1.12 
1.15 
1.02 



.95 



1.00 

.98 

.96 

1.48 

1.10 

1.47 
1.64 
1.39 
1.13 
1.00 



158 



WATER RESOURCES OF HAWAII, 1912. 



HONOLUA STREAM BASIN. 
HONOLTTA DITCH NEAR HONOKAHATT, MAUI. 

Location. — About 5^ miles southwest of Honokahau, about 3 miles above Honolua 

ranch, and 150 feet below ditch intake. 
Records available. — August 7, 1911, to December 31, 1912. 

Gage. — Vertical staff; read twice daily, at 6 a. m. and 6 p. m.; datum unchanged. 
Channel. — Permanent . 

Discharge measurements. — Made in flume. 
Accuracy. — No discharge rating yet available. 
Cooperation. — Honolua Ranch Co. furnishes gage reader and otherwise assists in 

obtaining records. 

Discharge measurements of Honolua ditch near Honokahau, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


June 22 


J. B. Stewart 


Feet. 
0.52 
.27 
.56 


Sec-feet. 
2.15 


Sept. 13 
Dec. 16 


do 


.25 


C. T. Bailey 


2.71 









Daily gage height, in feet, of Honolua ditch near Honokahau, Maui, for 1912. 



Day. 



2 
3 

4. 
5 

6, 

7. 
8 
9 
10 

11 
12 
13 
14. 
15 

16 
17 
18 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



Jan. 


Feb. 


Mar. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


0.50 


0.29 


0.75 


0.63 


0.33 


0.30 


0.53 


0.45 


.49 


.34 


.90 


.85 


.34 


.65 


.58 


.45 


.47 


.72 


.90 


.83 


.35 


.50 


.42 


.38 


.43 


.48 


.69 


.74 


.35 


.44 


.30 


.35 


.40 


.38 


.58 


.77 


.35 


.42 


.50 


.34 


.40 


.32 


.70 


.66 


.30 


.42 


.27 


.31 


.40 


.30 


.74 


.56 


.30 


.53 


.30 


.29 


.55 


.31 


.52 


.62 


.30 


.40 


.32 


.30 


.51 


.30 


.90 


.80 


.35 


.40 


.32 


1.00 


.46 


.30 


.88 


.80 


.45 


.36 


.32 


.60 


.41 


.67 


.90 


.70 


.46 


.35 


.37 


.48 


.38 


.44 


.90 


.75 


.50 


.28 


.54 


.39 


.36 


.55 


.90 


.85 


.50 


.26 


.77 


.38 


.36 


.80 


.88 


.74 


.78 


.25 


.86 


.36 


.35 


.52 


.74 


.64 


.82 


.24 


.74 


.32 


.35 


.40 


.64 


.53 


.80 


.23 


.45 


1.00 


.34 


.36 


.76 


.64 


.48 


.20 


.33 


.90 


.34 


.34 


.90 


.45 


.48 


.20 


.34 


.85 


.34 


.85 


.88 


.42 


.35 


.22 


.31 


.78 


.33 


.90 


.90 


.32 


.32 


.26 


.30 


.68 


.33 


.85 


.88 


.48 


.54 


.23 


.55 


.76 


.32 


.80 


.74 


.48 


.42 


.20 


.72 


.76 


.32 


.89 


.60 


.36 


.35 


.18 


.80 


.68 


.47 


.83 


.58 


.42 


.35 


.15 


.44 


.49 


.36 


.90 


.58 


.40 


.35 


.70 


.40 


.44 


.33 


.58 


.82 


.40 


.50 


.50 


.58 


.40 


.33 


.90 


.68 


.35 


.60 


1.45 


.80 


.40 


.32 


.90 


.64 


.35 


.40 


.20 


.92 


.40 


.32 


.68 


.62 


.46 


.40 


.40 


.48 


.40 


.30 




.76 


.45 


.42 


.76 


.51 


.48 


.30 




.89 


.38 


.32 




.76 





Dec. 



0.74 

.58 
.99 
.58 
.50 

.48 
.76 
.58 
.50 
.46 

.41 
.40 
.40 
.39 
.40 

.56 
.36 
.38 
.72 

.47 

.72 

.87 
.67 
.55 
.47 

.58 
.47 
.46 
.52 
.60 
.50 



Note. — Gage not read during April, May, and June. 



ISLAND OF MAUI. 



159 



HONOKAHAU STREAM BASIN. 
HONOKAHATT DITCH AT INTAKE, NEAR HONOKAHAU, MATTI. 

Location. — About 9 miles by trail from Honokahau and 250 feet below ditch intake. 

Records available. — February 3, 1907, to December 31, 1912. 

Gage. — Vertical staff; read twice daily, at 6 a. m. and 6 p. m. 

Channel. — Probably permanent. 

Discharge measurements. — Made from plank at gage. 

Accuracy. — Records good. 

Cooperation. — Gage is the property of the Honolua Ranch Co. 

Discharge measurements of Honokahau ditch at intake, near Honokahau, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Feb. 29 
Mar. 1 
Sept. 13 


J. B. Stewart 

do 

do 


Inches. 
27.8 
17.0 
22.2 


Sec.-ft. 
30.6 
12.6 
19.0 


Nov. 27 
Dec. 16 


J.B.Stewart 

C. T. Bailey 


Inches. 
22.0 
23.9 


Sec.-ft. 
19.2 
22.5 



Daily gage height, in inches, of Honokahau ditch at intake, near Honokahau, Maui, for 

1912. 

[Takahashi, observer.] 



Day. 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 



1. 
2. 
3. 
4. 
5. 

6. 
7. 
8. 
9. 
10. 

11. 
12. 
13. 
14. 
15. 

16 
17. 
18. 
19. 
20. 

21. 
22. 
23. 
24. 

25. 

26 
27 
28. 
29 
30 
31 



28.2 
30.4 
27.8 
27.0 
26.5 

26.2 
28.6 
32.8 
30.8 
27.4 

26.1 
26.0 
25.8 
25.5 
25.5 

25.5 
25.5 
25.2 
25.2 
25.2 

24.9 

24.8 
24.8 
26.1 
24.9 

24.8 
24.5 
24.5 
24.1 
23.9 



23.8 
26.9 
33.0 
26.2 
24.5 

24.0 
23.9 
24.9 
25.4 
24.1 

30.0 
24.9 
27.5 
30.1 
24.2 

24.0 
24.1 
23.8 
33.5 
34.0 

34.0 
29.8 
34.0 
34.0 
34.0 

34.0 
34.0 
34.0 

28.4 



30.8 
34.0 
34.0 
30.8 
31.0 

32.5 
32.0 
28.0 
34.0 
33.5 

34.0 
34.0 
34.0 
31.9 

28.5 

27.4 
30.8 
34.0 
32.0 
34.0 

32.1 

28.6 
27.8 
27.2 
27.9 

31.5 
29.5 
29.6 
30.8 
34.0 
33.5 



32.5 
31.5 
34.0 
34.0 
34.0 

34.0 
34.0 
34.0 
34.0 
34.0 

31.5 
34.0 
32.5 
34.0 
33.0 

34.0 
34.0 
34.0 
34.0 
34.0 

33.5 
34.0 
32.8 
32.5 
31.6 

33.0 
31.8 
30.5 
29.6 
32.5 



30.6 
34.0 
34.0 
32.0 
33.5 

32.4 
29.6 
32.6 
29.5 
29.0 

28.6 
28.5 
28.4 
28.1 
27.9 

27.8 
27.6 
27.6 
31.8 
30.0 

31.0 

28.4 
27.8 
30.8 
29.6 

34.0 
34.0 
34.0 
32.5 
31.0 
29.4 



27.5 
27.0 
26.6 
26.5 
26.2 

26.1 
27.2 
33.0 
28.5 
31.9 

33.0 
31.5 
32.5 
31.9 
34.0 

30.6 
31.5 
28.0 
27.5 
27.0 

31.0 
28.5 
31.4 
34.0 
27.9 

27.2 
26.5 
26.0 
25.9 
25.5 



27.5 
27.9 
28.0 
30.4 
31.0 

28.0 
32.0 
30.2 
34.0 
33.0 

33.0 
31.5 
34.0 
32.0 
27.4 

30.1 

28.2 
26.2 
26.2 
25.9 

31.8 

28.4 
26.8 
30.5 
25.8 

25.2 
27.0 
27.0 

26.2 
25.8 
24.9 



24.5 
24.5 
24.4 
24.2 
24.1 

24.0 
26.0 
25.5 
30.8 
28.2 

31.0 

26.4 
27.8 
34.0 
29.4 

31.8 

27.4 
24.9 
24.4 
24.2 

24.0 
27.0 
24.2 
23.6 
23.4 

28.6 
27.5 
24.2 
29.5 
26.5 
25.4 



23.5 
33.0 
25.2 
23.8 
25.0 

23.5 
30.0 
23.4 
24.2 
22.9 



21.5 
21.5 
21.5 
24.4 
22.5 

23.8 
22.4 
21.9 
21.6 
21.4 

23.2 
25.1 
26.5 
27.2 
30.5 



29.4 
29.0 
23.0 
29.5 
25.2 

23.0 

22.8 
28.8 
24.0 
22.6 

28.2 
27.5 
30.2 
31.0 
30.0 

23.5 
22.4 
21.9 
21.6 
21.5 

30.5 
31.2 
28.8 
24.5 
22.5 

30.2 
30.8 
30.4 
23.4 
29.0 
33.0 



34.0 
23.8 
22.2 
23.2 
21.8 

21.9 
21.5 
21.8 
23.0 
34.0 

28.0 
24.5 
22.2 
21.5 
21.1 

21.0 
31.5 
34.0 
29.8 
28.1 

32.0 
29.5 
30.5 
23.2 
22.2 

22.0 
21.9 
21.8 
22.0 

28.2 



33.5 
30.0 
32.2 
24.6 
22.4 

22.0 
34.0 
28.0 
24.8 
27.9 

22.2 
22.0 
21.9 
24.0 
23.2 

24.2 
21.9 
28.8 
33.0 
25.2 

29.0 
34.0 
30.4 
26.2 
29.2 

29.8 
23.8 
28.0 
23.8 
29.2 
28.8 



160 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet , of Honokahau ditch at intake, near Honokahau, Maui, for 

1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1 

2 
3 
4 
5 

6 
7 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 
18 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



31.4 
35.8 
30.6 
29.0 
28.0 

27.4 
32.2 
40.6 
36.6 
29.8 

27.2 
27.0 
26.6 
26.0 
26.0 

26.0 
26.0 
25.4 
25.4 
25.4 

24.8 
24.6 
24.6 
27.2 
24.8 

24.8 
24.0 
24.0 
23.2 

22.8 
22.8 



22.6 
28.8 
41.0 
27.4 
24.0 

23.0 

22.8 
24.8 
25.8 
23.2 

35.0 
24.8 
30.0 
35.2 
24.8 

23.0 
23.2 
22.6 
42.0 
43.0 

43.0 
34.6 
43.0 
43.0 
43.0 

43.0 
43.0 
43.0 
31.8 



35.0 
43.0 
43.0 
36.6 
37,0 

40.0 
39.0 
31.0 
43.0 
42.0 

43.0 
43.0 
43.0 
38.8 
32.0 

29.8 
36.6 
43.0 
39.0 
43.0 

39.2 
32.2 
30.6 
29.4 
30.8 



34.8 
34.2 



43.0 
42.0 



40.0 
38.0 
43.0 
43.0 
43.0 

43.0 
43.0 
43.0 
43.0 
43.0 

38.0 
43.0 
40.0 
43.0 
41.0 

43.0 
43.0 
43.0 
43.0 
43.0 

42.0 
43.0 
40.6 
40.0 
38.2 

41.0 
38.6 
36.0 
34.2 
40.0 



36.2 
43.0 
43.0 
39.0 
42.0 

39.8 
34.2 
40.2 
34.0 
33.0 

32.2 
32.0 
31.8 
31.2 



30.6 
30.2 
30.2 
38.6 
35.0 

37.0 

31.8 
30.6 
36.6 
34.2 

43.0 

43.0 
43.0 
40.0 
37.0 
33.8 



30.0 
29.0 
28.2 
28.0 
27.4 

27.2 
29.4 
41.0 
32.0 



41.0 
38.0 
40.0 
38.8 
43.0 

36.2 
38.0 
31.0 
30.0 
29.0 

37.0 
32.0 
37.8 
43.0 
30.8 

29.4 
28.0 
27.0 
26.8 
26.0 



30.0 
30.8 
31.0 
35.8 
37.0 

31.0 

39.0 
35.4 
43.0 
41.0 

41.0 
38.0 
43.0 
39.0 
29.8 

35.2 
31.4 
27.4 
27.4 
26.8 



31.8 
28.6 
36.0 
26.6 

25.4 
29.0 
29.0 

27.4 
26.6 
24.8 



24.0 
24.0 
23.8 
23.4 
23.2 

23.0 

27.0 
26.0 
36.6 
31.4 

37.0 

27.8 
30.6 
43.0 
33.8 



29.8 
24.8 
23.8 
23.4 

23.0 
29.0 
23.4 
22.2 
21.8 

32.2 
30.0 
23.4 
34.0 
28.0 
25.8 



22.0 
41.0 
25.4 
22.6 
25.0 

22.0 
35.0 
21.8 
23.4 
20.8 

20.0 
19.8 
19.0 
19.0 
18.4 

18.2 
18.2 
18.2 
23.8 
20.0 

22.6 
19.8 
18.8 
18.4 
18.1 

21.4 
25.2 
28.0 
29.4 
36.0 



33.8 
33.0 
21.0 
34.0 
25.4 

21.0 
20.6 
32.6 
23.0 
20.2 

31.4 
30.0 
35.4 
37.0 
35.0 

22.0 
19.8 
18.8 
18.4 
18.3 

36.0 
37.4 
32.6 
24.0 
20.0 

35.4 
36.6 
35.6 
21.8 
33.0 
41.0 



43.0 
22.6 
19.4 
21.4 
18.7 

18.8 
18.2 
18.7 
21.0 
43.0 

31.0 
24.0 
19.4 
18.2 
17.6 

17.5 
38.0 
43.0 
34.6 
31.2 

39.0 
34.0 
36.0 
21.4 
19.4 

19.0 

18.8 
18.7 
19.0 
31.4 



42.0 
35.0 
39.4 
24.2 
19.8 

19.0 
43.0 
31.0 
24.6 
30.8 

19.4 
19.0 
18.8 
23.0 
21.4 

23.4 
18.8 
32.6 
41.0 
25.4 

33.0 
43.0 
35.8 
27.4 
33.4 

34.6 

22.6 
31.0 
22.6 
33.4 
32.6 



Monthly discharge of Honokahau ditch at intake, near Honokahau, Maui, for 1912. 



Month. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



Discharge in second-feet. 



Maximum. Minimum. Mean 



40.6 
43.0 
43.0 
43.0 
43.0 
43.0 
43.0 
43.0 
41.0 
41.0 
43.0 
43.0 



43.0 



22.8 
22.6 
29.4 
34.2 
30.2 
26.0 
24.8 
21.8 
18.1 
18.3 
17.5 
18.8 



17.5 



27.4 
32.2 
37.8 
41.2 
36.0 
33.1 
32.8 
28.0 
23.0 
28.5 
25.9 
29.1 



31.3 



Run-off 

(total in 

acre-feet). 



1,680 
1,850 
2,320 
2,450 
2,210 
1,970 
2,020 
1,720 
1,370 
1,750 
1,540 
1,790 



22, 700 



Accu- 
racy. 



HONOKAHAU DITCH AT HONOKAWAI WEIR, NEAR HONOKAHAU, MAUI. 

Location. — About 8 miles north of Lahaina and 6 miles south of Honolua ranch 

office. 
Records available. — January 1, 1910, to December 31, 1912. 
Gage. — Friez automatic clock register. 

Discharge measurements. — By contracted weir consisting of three 5-foot panels. 
Cooperation. — Weir is the property of and records are furnished by the Honolua 

Ranch Co, 



ISLAND OF MAUI. 



161 



Daily discharge, in million gallons, of Honokahau ditch at Honokawai weir, near Hono- 
kahau, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


14.00 
14.20 
13.40 
12.50 
12.10 

11.90 
12.80 
14.90 
14.20 
12.60 

11.90 
11.60 
11.40 
11.20 
11.00 

11.60 
10.90 
10.80 
10.80 
10.90 

10.80 
10.60 
10.90 
12.00 
11.40 

11.00 
10.60 
10.50 
10.20 
10.10 
10.20 


9.90 
12.30 
14.50 
12.40 
11.00 

10.50 
9.50 
10.70 
11.80 
8.60 

12.30 
11.40 
12.80 
13.20 
10.90 

10.30 
10.00 
9.60 
14.80 
15.00 

15.00 
15.00 
15.00 
15.00 
15.00 

15.00 
15.00 
15.00 
15.00 


14.70 
15.00 
15.00 
15.00 
15.00 

15.00 
14.30 
14.40 
15.00 
15.00 

15.00 
15.00 
15.00 
15.00 
15.00 

14.50 
14.90 
15.00 
15.00 
15.00 

15.00 
15.00 
14.40 
13.70 
13.80 

15.00 
15.00 
14.50 
14.90 
15.00 
15.00 


15.00 
15.00 
15.00 
15.00 
15.00 

15.00 
15.00 
15. 00 
15.00 
15.00 

15.00 
15.00 
15.00 
15.00 
15.00 

15.00 
15.00 
15.00 
15.00 
15.00 

15.00 
15.00 
15.00 
15.00 
15.00 

15.00 
15.00 
15.00 
15.00 
15.00 


15.00 
15.00 
15.00 
15.00 
14.90 

14.70 
13.60 
14.90 
13.90 
13.10 

13.40 
13.50 
13.20 
13.10 
13.10 

13.40 
13.10 
13.20 
15.00 
15.00 

15.00 
14.30 
13.50 
13.70 
10.00 

14.60 
15.00 
15.00 
15.00 
15.00 
15.00 


13.60 
13.10 
12.60 
12.20 
12.00 

11.80 
12.20 
14.80 
13.60 
14.20 

15.00 
14.30 
14.90 
14.40 
15.00 

15.00 
14.90 
13.60 
13.40 
12.30 

13.20 
12.90 
13.20 
14.20 
12.90 

11.80 
11.60 
8.90 
10.70 
10.40 


10.30 
11.60 
11.80 
11.70 
12.20 

13.30 
13.30 
13.00 
13.30 
14.90 

14.90 
14.70 
14.30 
13.60 
14.50 

12.40 
12.80 
12.80 
11.20 
10.80 

10.80 
13.30 
12.30 
11.10 
12.20 

10.50 
10.20 
11.20 
10.90 
10.40 
9.70 


9.40 
9.10 
9.10 
9.20 
8.90 

9.00 
8.90 
11.20 
10.40 
12.00 

12.50 
13.80 
12.80 
7.30 
12.50 

14.70 
13.70 
11.60 
10.30 
9.70 

9.30 
9.20 
11.80 
9.80 
9.10 

8.70 
11.70 
12.10 
11.40 
12.30 
11.10 


10.10 
9.70 
13.50 
10.70 
10.00 

9.20 
11.30 
12.50 
10.40 

9.60 

8.60 
8.20 
7.60 
7.80 
7.60 

7.60 
7.40 
7.60 
8.00 
8.30 

9.20 

8.40 
7.50 
7.60 
7.50- 

7.40 
8.00 
8.40 
8.80 
12.40 


12.40 
10.00 
12.40 
8.80 
11.10 

11.00 
8.40 
8.70 
8.50 
8.20 

8.90 
12.10 
13.50 
13.60 
14.10 

13.20 
9.40 
8.20 
7.60 
7.10 

7.10 
13.00 
14.90 
12.40 

9.40 

8.70 
11.40 
13.30 
13.00 
9.10 
9.20 


13.60 
9.20 
8.60 
8.20 
7.30 

7.10 
6.80 
6.40 
8.50 
14.80 

12.30 
11.00 
8.40 
7.70 
7.30 

10.20 
12.50 
9.20 
8.20 
7.90 

6.50 
5.70 
7.20 
15.00 
14.20 

15.00 
12.70 
13.50 
14.60 
13.50 


10.70 


2 


13.70 


3 


12.80 


4 


13.70 


5 


10.00 


6 


9.30 


7 


10.90 


8 : 


14.10 


9 


10.90 


10 


10.30 


11 


8.60 


12 


8.00 


13 


7.50 


14 


7.30 


15 


7.40 


16 


8.50 




9.10 


18 


7.70 




11.20 


20 


14.10 


21 


10.50 




13. 40 


23 


14.50 


24 


13.80 


25 


11.40 


26 


10.60 




11.60 


28 


9.10 




9.90 


30 


9.50 




11.20 







Monthly discharge of Honokahau ditch at Honokawai weir, near Honokahau, Maui, 

for 1912. 



Month. 



Discharge in million gallons. 



Maximum. Minimum. Mean 



Run-off 
(total in 
million 
gallons). 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



14.9 
15.0 
15.0 
15.0 
15.0 
15.0 
14.9 
14.7 
13.5 
14.9 
15.0 
14.5 



15.0 



10.1 
8.6 
13.7 
15.0 
10.0 
8.9 
9.7 
7.3 
7.4 
7.1 
5.7 
7.3 



5.7 



11.70 
12.60 
14.80 
15.00 
14.10 
13.10 
12.30 
10.70 
9.03 
10.60 
10.10 
10.70 



12.10 



363 
366 
459 
450 
437 
393 
380 
333 
271 
329 
303 
331 



4,420 



14694°— wsp 336—14- 



-11 



162 



WATER RESOURCES OP HAWAII, 1912. 
MISCELLANEOUS MEASUREMENTS. 



The following miscellaneous discharge measurements have been 
made by J. B. Stewart on streams of West Maui: 

Miscellaneous measurements on West Maui in 1912. 
Kahakuloa Stream above Kahakuloa, near Wailuku, Maui. 



Aug. 28 

Sept. 3. 

14 



Date. 



Gage 
height. 



Feet. 
0.68 
.75 
.65 



Dis- 
charge. 



Sec.-ft. 
5.60 
7.88 
6.10 



Date. 



Oct. 



Gage 
height. 



Feet. 
0.85 
.77 
1.05 



Dis- 
charge. 



Sec.-ft. 
9.92 
8.58 
19.3 



Honokahua ditch above Honolua Stream, Honokahau, Maui. 


Mar. 1 


28.3 
23.2 


28.3 
19.8 


Sept. 13 


22.1 


16.1 


1 










South Waiehu ditch near Wailuku, Maui. 


July 13 '. 


0.48 
.45 


4.16 
3.79 


Sept. 6 0.42 

Nov. 21 .43 


3.47 


16 


4.27 











East Maui. 



KOOLAU DITCH REGION. 



KOOLAU DITCH NEAR KEANAE, MAUI. 



Location. — About 3 miles southwest of Keanae, at portal of tunnel extending 

from Keanae Valley to Alo Stream. 
Records available. — January 1, 1910, to December 31, 1912. 
Gage. — Vertical staff; read twice daily, at 6 a. m. and 6 p. m. 
Channel. — Straight and probably permanent. 
Discharge measurements. — Made from plank. 
Accuracy. — Very good. 
Cooperation. — Gage belongs to and records are furnished annually by East Maui 

Ditch Co. 

The following discharge measurement was made by J. B. Stewart: 
January 11, 1912: Gage height, 24.5 inches; discharge, 44.8 second-feet. 



ISLAND OF MAUI. 



163 



Daily gage height, in inches, of Koolau ditch near Keanae, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. . 


Oct. 


Nov. 


Dec. 


1 


34.2 
37.0 
33.4 
31.2 
29.8 

28.2 
27.2 
28.2 
27.4 
25.0 

24.4 
23.6 
23.1 
22.9 
22.1 

21.6 
21.2 
20.6 
20.0 
19.1 

18.5 
18.5 
19.4 
18.5 
17.8 

17.1 
16.6 
16.2 
16.0 
16.4 
16.2 


16.4 
15.9 
16.0 
15.4 
14.9 

14.8 
14.6 
15.8 
28.8 
17.8 

16.5 
16.5 
42.0 
23.0 
19.1 

17.8 
16.9 
16.4 
33.5 
56.0 

56.0 
55.5 
53.8 
46.2 
42.2 

45.6 
56.1 
56.2 
55.8 


55.8 
55.9 
56.0 
55.5 
54.0 

54.0 
55.2 
53.8 
54.0 
54.5 

56.5 
56.0 
56.0 
54.8 
53.0 

48.0 
48.0 
54.2 
51.8 
50.8 

47.5 
42.2 
39.8 
38.0 
43.0 

46.0 
36.9 
34.2 
54.5 
54.8 
52.8 


55.4 
54.2 
56.1 
57.8 
56.5 

56.0 
56.8 
56.0 
56.0 
55.6 

55.0 
56.0 
54.8 
55.2 
54.5 

55.0 
55.0 
52.8 
50.8 
52.2 

50.8 
51.2 
49.2 
48.5 
51.5 

52.5 
53.5 
47.5 
41.0 
40.6 


37.5 
38.0 
38.0 
49.5 
51.5 

47.5 
40.1 
47.8 
38.5 
35.0 

33.0 

30.6 
30.0 
30.4 
28.1 

27.2 
26.2 
25.9 
26.0 
29.0 

26.8 
25.2 
23.2 
24.5 
22.5 

32.0 

45.4 
31.9 
31.2 
26.9 
25.8 


23.8 
23.0 
22.0 
21.4 
20.8 

20.1 
20.5 
23.9 
22.2 
37.4 

37.5 

29.2 
30.2 
27.8 
25.2 

26.2 
23.9 
22.5 
26.4 
25.1 

31.9 
25.2 
23.0 
39.5 
27.5 

24.5 
23.5 
22.2 
21.2 
20.4 


21.5 
22.0 
24.5 
32.1 
27.8 

24.0 
22.5 
33.2 
45.5 
30.5 

31.8 
26.8 
29.6 
27.2 
24.0 

23.1 
21.8 
21.0 
20.1 
19.2 

20.0 
19.0 
18.2 
25.1 
22.4 

20.8 
21.6 
22.0 
24.5 
21.4 
18.6 


18.0 
17.4 
18.2 
17.1 
16.5 

15.9 
17.8 
16.0 
20.8 
21.0 

32.1 

28.9 
26.5 
35.0 
47.4 

36.8 
27.1 
24.9 
25.4 
22.6 

21.9 
28.5 
22.5 
22.1 
19.5 

21.6 
21.8 
22.0 
25.4 
21.5 
24.5 


23.9 
53.2 

46.8 
49.1 
35.2 

39.5 
52.6 
37.0 
31.8 
29.0 

26.6 
25.5 
24.5 
23.0 
22.4 

21.8 
21.0 
20.0 
19.8 
19.9 

18.8 
18.0 
17.4 
17.2 
16.9 

16.5 
16.5 
16.0 
16.4 
40.9 


23.1 

28.8 
24.0 
19.6 
18.2 

17.5 
18.1 
18.8 
26.8 
23.6 

23.5 
22.2 
22.6 
49.5 
41.0 

35.0 
27.1 
24.4 
22.9 
26.0 

56.5 
61.5 
60.5 
56.2 
43.5 

47.2 
63.0 
60.0 
53.2 
56.5 
63.5 


51.8 
46.8 
55.0 
44.0 
35.2 

32.5 
34.0 
33.0 
63.5 

58.8 

56.2 
46.0 
41.5 
36.5 
36.0 

63.5 
61.5 
63.5 
58.5 
57.0 

53.8 
55.5 
52.5 
46.8 
50.8 

45.5 
42.0 

40.8 
37.8 
37.0 


47.8 


2. 


63.5 


3 


59.2 


4 


55.0 


5 


53.5 


6 


52.0 


7 


50.5 


8 


44.2 


9 


40.2 


10 


38.5 


11 


30.0 


12 


32.8 


13 


32.0 


14 


34.0 


15 


31.8 


16 


45.0 


17 


33.2 


18 


49.8 


19 


51.2 


20 


50.0 


21 


54.0 


22 • 


58.5 


23 


59.5 




56.5 


25 


51.5 


26 


56.5 


27, 


54.2 


28 


51.5 


29 


45.8 


30 


41.2 


31 


41.2 







Daily discharge, in second-feet, of Koolau ditch near Keanae, Maui, for 1912. 



Day. 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec 



76.8 
88.0 
73.6 
64.8 
60.4 

55.6 
52.6 
55.6 
53.2 
46.0 

44.2 
41.8 
40.3 
39.7 
37.3 

35.8 
34.6 
33.2 
32.0 
30.2 

29.0 
29.0 
30.8 
29.0 
27.6 

26.2 
25.2 
24.4 
24.0 
24.8 
24.4 



24.8 
23.8 
24.0 
22.8 
21.8 

21.6 
21.2 
23.6 
57.4 
27.6 

25.0 
25.0 
108.0 
40.0 
30.2 

27.6 
25.8 
24.8 
74.0 
175.0 

175.0 
172.0 
164.0 
126.0 
109.0 

123.0 
176.0 
176.0 
174.0 



174.0 
174.0 
175.0 
172.0 
165.0 

165.0 
171.0 
164.0 
165.0 
168.0 

178.0 
175.0 
175.0 
169.0 
160.0 

135.0 
135.0 
166.0 
154.0 
149.0 

132.0 
109.0 
99.2 
92.0 
112.0 

125.0 

87.6 

76.8 

168.0 

169.0 

159.0 



172.0 
166.0 
176.0 
184.0 
178.0 

175.0 
179.0 
175.0 
175.0 
173.0 

170.0 
175.0 
169.0 
171.0 
168.0 

170.0 
170.0 
159.0 
149.0 
156.0 

149.0 
151.0 
141.0 
138.0 
152.0 

158.0 
162.0 
132.0 
104.0 
102.0 



90.0 
92.0 
92.0 
142.0 
152.0 

132.0 

100.0 

134.0 

94.0 

80.0 

72.0 
62.8 
61.0 
62.2 
55.3 

52.6 
49.6 

48.7 
49.0 
58.0 

51.4 



44.5 
38.5 

68.0 
122.0 
67.6 
64.8 
51.7 
48.4 



42.4 
40.0 
37.0 
35.2 
33.6 

32.2 
33.0 
42.7 
37.6 



90.0 



61.6 
54.4 



49.6 
42.7 
38.5 
50.2 
46.3 

67.6 
46.6 
40. a 
98.0 
53.5 

44.5 
41.5 
37.6 
34.6 
32.8 



35.5 
37.0 
44.5 
68.4 
54.4 

43.0 

38.5 
72.8 
122.0 
62.5 

67.2 
51.4 
59.6 
52.6 
43.0 

40.3 
36.4 
34.0 
32.2 
30.4 

32.0 
30.0 
28.4 
46.3 
38.2 

33.6 
35.8 
37.0 
44.5 
35.2 
29.2 



28.0 
26.8 
28.4 
26.2 
25.0 

23.8 
27.6 
24.0 
33.6 
34.0 

68.4 
57.7 
50.5 
80.0 
132.0 

87.2 
52.3 
45.7 
47.2 
38.8 

36.7 
56.5 
38.5 
37.3 
31.0 

35.8 
36.4 
37.0 
47.2 
35.5 
44.5 



42.7 
161.0 
129.0 
140.0 



98.0 
158.0 
88.0 
67.2 
58.0 

50.8 
47.5 
44.5 
40.0 
38.2 



34.0 
32.0 
31.6 
31.8 

29.6 
28.0 
26.8 
26.4 



25.0 
25.0 
24.0 
24.8 
104.0 



40.3 
57.4 
43.0 
31.2 
28.4 

27.0 

28.2 
29.6 
51.4 
41.8 

41.5 
37.6 
38.8 
142.0 
104.0 

80.0 
52.3 
44.2 
39.7 
49.0 

178.0 
202.0 
198.0 
176.0 
114.0 

131.0 
210.0 
195.0 
161.0 
178.0 
212.0 



154.0 
129.0 
170.0 
116.0 
80.8 

70.0 

76.0 

72.0 

212.0 

189.0 

176.0 

125.0 

106.0 

86.0 

84.0 

212.0 
202.0 
212.0 
188.0 
180.0 

164.0 
172.0 
158.0 
129.0 
149.0 

122.0 
108.0 
103.0 
91.2 
88.0 



164 WATER RESOURCES OF HAWAII, 1912. 

Monthly discharge of Koolau ditch near Keanae, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean. 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



88.0 
176.0 
178.0 
184.0 
152.0 

98.0 
122.0 
132.0 
161.0 
212.0 
212.0 
212.0 



24.0 
21.2 
76.8 
102.0 
38.5 
32.2 
28.4 
23.8 
24.0 
27.0 
70.0 
61.0 



41.6 

76.5 

149.0 

160.0 

74.9 

48.6 

45.7 

44.3 

58.3 

95.6 

137.0 

134.0 



212.0 



21.2 



2,560 
4,400 
9,160 
9,520 
4,610 
2,890 
2,810 
2,720 
3,470 
5,880 
8,150 
8,230 



64, 400 



SPRECKELS DITCH REGION. 
HAIPUAENA STREAM NEAR HUELO, MAUI. 

Location. — About 6J miles by trail southeast of Huelo post office, about 400 feet 
below point where the Spreckels ditch joins the stream. 

Records available. — December 18, 1910, to December 31, 1912. 

Drainage area. — Not mapped. 

Gage. — Vertical staff; read once daily, about 4 p. m.; datum unchanged. 

Channel. — Rough and shifting. 

Discharge measurements. — Made by wading; no equipment for flood measure- 
ments. 

Accuracy. — A fairly well defined rating curve has been developed for ordinary 



Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 
Discharge measurements of Haipuaena Stream near Huelo, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Sept. 23 
Nov. 10 


J. B. Stewart 


Feet. 
0.40 
1.30 


Sec.-ft. 
a6.4 


do 


6 47.0 









a Measurements at Spreckels ditch station No. 4. 
b Haipuaena and Spreckels ditch at station No. 3. 

Daily gage height, in feet, of Haipuaena Stream near Huelo, Maui, for 1912. 
[Kumagai, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.78 

1.00 

.80 

.75 

.70 

.68 
.65 
.68 
.73 
.63 


0.31 
.30 
.30 
.30 
.28 

.27 
.23 
.70 
.43 
.49 


1.40 
1.65 
1.53 
1.43 
1.38 

1.35 
1.60 
1.33 
1.53 
1.50 


1.48 
1.50 
1.60 
2.90 
1.80 

1.40 
2.50 
2.20 
1.50 
1.60 


0.93 
.93 
1.30 
1.40 
1.33 

1.25 
1.10 
1.30 
1.00 
,90 


0.63 
.63 
.60 
.53 
.50 

.47 
.50 
.70 
.83 
1.50 


0.85 
1.20 
1.30 
1.33 
1.23 

.95. 

.82 
1.50 
1.30 
1.03 


0.60 

.58 
.63 
.50 
.48 

.45 
.45 
.43 
.95 
.95 


0.80 
1.70 
1.33 
1.30 
1.00 

1.23 

1.30 

1.03 

.90 

.85 


0.78 

1.60 

.78 

.60 

.55 

.45 
.50 
.50 
.71 
.63 


1.30 

1.10 

1.30 

.98 

.90 

.88 

.88 

.75 

2.70 

1.50 


1.20 


2 


1.55 


3 


1.65 


4 


1.35 


5 


1.18 


6 


.73 


7... 


1.20 


8 


1.05 


9 


.98 


10 


.90 



ISLAND OF MAUI. 165 

Daily gage height, in feet, of Haipuaena Stream near Huelo, Maui, for 1912 — Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


11 


0.58 
.53 

.51 
.50 

.48 

.45 
.43 
.41 
.40 
.39 

.38 
.35 
.34 

.68 
.48 

.39 
.36 
.33 
.32 
.30 
.40 


0.40 

1.00 

.80 

.58 

.48 

.48 

.48 

.40 

1.23 

2.00 

2.50 
1.50 
1.33 
1.10 
1.13 

1.45 
1.90 
1.55 
1.45 


2.90 
1.60 
1.55 
1.40 
1.30 

1.18 
1.38 
1.40 
1.50 
1.30 

1.20 
1.00 
1.15 
1.00 
1.00 

1.35 
1.03 
.98 
.85 
1.98 
1.58 


1.40 
1.53 
1.35 
1.45 
1.38 

1.50 
1.45 
1.40 
1.33 
1.68 

1.35 
1.40 
1.20 
1.15 
1.40 

1.48 
1.33 
1.15 
1.05 
1.00 


0.83 
.78 
.73 
.70 
.65 

.65 
.60 
.60 
.60 
.75 

.63 
.53 
.50 
.68 
.50 

1.60 
1.30 
1.15 

.90 
.78 
.70 


1.40 

1.00 

1.10 

.85 

.93 

1.00 
.78 
.70 
.98 

1.25 

1.30 

*.83 

.80 

1.10 

.83 

.78 
.83 
.75 
.68 
,63 


1.20 

.95 

1.10 

1.13 

.93 

.83 
.78 
.75 
.70 
.70 

.68 
.63 
.58 
.93 
.93 

.80 
.95 
.80 
1.03 
.73 
.65 


1.13 
1.00 
1.10 
1.65 
1.33 

1.03 

.88 
.85 
.88 
.75 

.70 
1.25 
.83 
.70 
.65 

.80 
.83 
.63 
.90 
.83 
.80 


0.80 
.70 
.70 
.63 
.60 

.58 
.58 
.50 
.48 
.50 

.45 
.43 
.43 
.45 
.40 

.38 
.35 
.33 
.45 
1.50 


0.65 

.80 

.79 

1.33 

1.05 

.83 
.73 

.58 
.53 
.78 

1.65 
1.5*5 
1.45 
1.33 
1.05 

1.35 
2.10 
1.50 
1.30 
1.35 
1.25 


1.33 

1.10 

1.00 

.90 

.80 

2.10 
1.48 
2.00 
1.35 
1.50 

1.35 
1.28 
1.20 
1.03 
1.35 

1.60 
.97 
.95 
.80 
.90 


1.83 


12 


.80 


13 


.75 


14 


.93 


15 


.75 


16 


.90 


17 


.73 


18 


.80 


19 


2.05 


20 


1.10 


21.... 


1.90 


22 


1.70 


23 


2.00 


24 


1.53 


25 


1.30 


25 


1.45 


27 


1.30 


28 


1.35 


29 


1.15 


30.... 


1.03 


31 


.98 







Daily discharge, in second-feet, of Haipuaena Stream near Euelo, Maui, for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


17.7 


4.2 


52.0 


57.6 


24.5 


12.0 


20.8 


11.0 


IS. 5 


17.7 


45.0 


28.0 


4.0 


69.5 


59.0 


24.5 


12.0 


39.0 


10.5 


73.0 


66.0 


33.0 


18.5 


4.0 


61.1 


66.0 


45.0 


11.0 


45.0 


12.0 


47.1 


17.7 


45.0 


16.5 


4.0 


54.1 


169.0 


52.0 


9.2 


47.1 


8.5 


45.0 


11.0 


27.0 


14.5 


3.7 


50.6 


80.0 


47.1 


8.5 


40.8 


8.0 


28.0 


9.8 


23.0 


13.8 


3.6 


48.5 


52.0 


42.0 


7.8 


25.5 


7.2 


40.8 


7.2 


22.1 


12.8 


3.0 


66.0 


136.0 


33.0 


8.5 


19.4 


7.2 


45.0 


8.5 


22.1 


13.8 


14.5 


47.1 


112.0 


45.0 


14.5 


59.0 


6.8 


29.5 


8.5 


16.5 


15.7 


6.8 


61.1 


59.0 


28.0 


19.8 


45.0 


25.5 


23.0 


14.9 


152.0 


12.0 


8.2 


59.0 


66.0 


23.0 


59.0 


29.5 


25.5 


20.8 


12.0 


59.0 


10.5 


6.0 


169.0 


52.0 


19.8 


52.0 


39.0 
25.5 


34.8 


18.5 


12.8 


47.1 


9.6 


28.0 


66.0 


61.1 


17.7 


28.0 


28.0 


14.5 


18.5 


33.0 


8.8 


18.5 


62.5 


48.5 


15.7 


33.0 


33.0 


33.0 


14.5 


18.1 


28.0 


8.5 


10.5 


52.0 


55.5 


14.5 


20.8 


24.8 


69 5 


12.0 


47.1 


23.0 


8.0 


8.0 


45.0 


50.6 


12.8 


24.5 


24.5 


47.1 


11.0 


30.5 


18.5 


7.2 


8.0 


37.8 


59.0 


12.8 


28.0 


19.8 


29.5 


10.5 


19.8 


104.0 


6.8 


8.0 


50.6 


55.5 


11.0 


17.7 


17.7 


22.1 


10.5 


15.7 


57.6 


6.3 


6.0 


52.0 


52.0 


11.0 


14.5 


16.5 


20.8 


8.5 


10.5 


96.0 


6.0 


40.8 


59.0 


47.1 


11.0 


27.0 


14.5 


22.1 


8.0 


9.2 


48.5 


5.8 


96.0 


45.0 


71.6 


16.5 


42.0 


14.5 


16.5 


8.5 


17.7 


59.0 


5.6 


136.0 


39.0 


48.5 


12.0 


45.0 


13.8 


14.5 


7.2 


69.5 


48.5 


5.0 


59.0 


28.0 


52.0 


9.2 


19.8 


12.0 


42.0 


6.8 


62.5 


43.8 


4.8 


47.1 


36.0 


39.0 


8.5 


18.5 


10.5 


19.8 


6.8 


55.5 


39.0 


13.8 


33.0 


28.0 


36.0 


13.8 


33.0 


24.5 


14.5 


7.2 


47.1 


29.5 


8.0 


34.8 


28.0 


52.0 


8.5 


19.8 


24.5 


12.8 


6.0 


30.5 


48.5 


5.8 


55.5 


48.5 


57.6 


66.0 


17.7 


18.5 


18.5 


5.6 


48.5 


66.0 


5.2 


88.0 


29.5 


47.1 


45.0 


19.8 


25.5 


19.8 


5.0 


104.0 


26.5 


4.6 


62.5 


27.0 


36.0 


36.0 


16.5 


18.5 


12.0 


4.6 


59.0 


25.5 


4.4 


55.5 


20.8 


30.5 


23.0 


13.8 


29.5 


23.0 


7.2 


45.0 


18.5 


4.0 




94.4 


28.0 


17.7 


12.0 


15.7 


19.8 


59.0 


48.5 


23.0 


6.0 




64.6 




14.5 




12.8 


18.5 




42.0 





Dec. 



39.0 
62.5 
69.5 
48.5 
37.8 

15.7 
39.0 
30.5 
27.0 
23.0 

82.4 
18.5 
16.5 
24.5 
16.5 

23.0 
15.7 
18.5 
100.0 
33.0 

88.0 
73.0 
96.0 
61.1 
45.0 

55.5 
45.0 
48.5 
36.0 
29.5 
27.0 



166 WATEE RESOUECES OF HAWAII, 1912. 

Monthly discharge of Haipuaena Stream near Huelo, Maui, for 1912. 



Month. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



Discharge in second-feet. 



Maximum. Minimum. 



28.0 

136.0 

169.0 

169.0 

66.0 

59.0 

59.0 

69.5 

73.0 

104.0 

152.0 

100.0 



).0 



4.0 
3.0 
20.8 
28.0 
8.5 
7.8 
10.5 



7.2 

16.5 
15.7 



3.0 



9.94 
29.60 
53.30 
61-20 
24.60 
22.20 
26.30 
21.30 
20.10 
31.80 
44.30 
43.40 



32.30 



Run-off 
(total in 
acre-feet). 



611 
1,700 
3,280 
3,640 
1,510 
1,320 
1,620 
1,310 
1,200 
1,960 
2,640 
2,670 



23,500 



Accu- 
racy. 



PUOHAKAMOA STREAM NEAR HUELO, MAUI. 

Location. — About 6f miles by trail southeast of Huelo post office, immediately below 

point where Spreckels ditch falls into stream. 
Records available. — December 18, 1910, to December 31, 1912. 
Gage. — Vertical staff; read once daily, at no regular hour, but usually about 5 p.m.; 

datum unchanged. 
Channel. — Practically permanent. 
Discharge measurements. — Made by wading. 
Accuracy. — Records good. 
Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 

Discharge measurements of Puohalcamoa Stream near Huelo, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Sept. 23 
Nov. 8 


J. B . Stewart 


Feet. 
0.45 
1.64 


Sec-feet. 
11.1 


do 


67.1 









Daily gage height, in feet, of Puohahamoa Stream near Huelo, Maui, for 1912. 

[Tokunaga, observer.] 



Day. 



1 

2 
3 
4 
5 

6 
7 
8 
9 
10 

11 

12 
13 
14 
15 

16 
17 
18 
19 
20 



Jan. 



1.01 
1.22 
.92 
.81 
.79 

.73 
.87 
.81 
.70 
.67 

.59 
.55 
.52 
.51 
.50 

.48 
.45 
.42 
.40 



Feb. 



0.28 



.26 
.24 

.22 
.21 

.72 
.48 
.32 

.30 
1.65 
1.38 
.67 
.32 

.32 
.31 
.32 
1.40 
2.25 



Mar. 



1.90 
2.16 
2.20 
1.64 
1.52 



3.25 
2.25 
2.70 
1.75 
1.48 

1.29 
1.38 
1.73 
1.80 
1.78 



Apr. 



1.76 
1.91 
2.12 
4.50 
2.41 

1.70 

2.18 
3.50 
1.95 
1.82 

1.65 
1.91 
1.46 
2.05 
1.65 

1.64 
1.60 
1.51 
1.50 
1.95 



May. 



1.05 
1.10 
1.40 
1.46 
1.58 

1.39 
1.19 
1.53 
1.18 
1.05 

.97 
.90 
.84 
.79 
.70 

.68 
.67 
.65 
.70 



June. 



0.73 

.72 
.67 
.54 
.43 

.40 
.43 
.81 
.67 
2.30 

1.70 
1.05 
1.60 
.97 
1.22 

1.09 
.95 
.92 
1.08 
1.10 



July. 



1.06 
1.49 
1.72 
1.68 
1.28 

1.04 
.90 
1.60 
1.50 
1.22 

1.15 

1.06 
1.13 
1.42 
1.18 



.90 
.79 
.70 



Aug. 



0.66 
.64 
.70 
.46 
.42 

.41 
.43 
.41 

1.28 



1.30 
1.09 
1.23 
1.43 
1.40 

1.18 
.97 
.91 

1.02 



Sept. 



0.98 
2.18 
1.50 
1.40 
1.17 

1.40 
1.62 
1.30 
1.04 



.87 
.81 
.75 
.70 



.62 
.53 
.50 
.54 



Oct. 



1.00 
1.50 
1.25 
.58 
.55 

.50 
.52 
.52 
1.00 
.67 

.82 



2.10 
1.15 

1.00 
.75 
.71 
.65 
.70 



Nov. 



1.50 
1.30 
1.43 
1.13 
.90 



.35 
1.69 

1.50 

1.28 
1.12 
1.01 
.88 

3.20 
2.15 
2.40 
1.82 
1.65 



Dec. 



1.50 
2.20 
3.34 
1.42 
1.45 

1.12 
1.35 
1.18 
1.05 
1.00 



.85 
.81 
LOO 

.85 



.82 
2.50 
1.75 
1.67 



ISLAND OF MAUI. 167 

Daily gage height, in jeet x of Puohakamoa Stream near Huelo, Maui, for 1912 — Contd. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


21 


6.37 
.35 
.32 

.80 
.45 

.32 
.30 
.29 
.29 
.28 
.39 


2.89 
1.95 
1.60 
1.34 
1.35 

1.24 

2.62 
2.11 
1.92 


1.42 
1.22 
1.10 
1.07 
1.00 

1.25 
1.12 
1.00 
.98 
2.48 
1.57- 


1.64 

1.70 
1.65 

L80 

1.82 

1.58 
1.52 
1.28 
1.18 


0.88 
.56 
.50 
.71 
.55 

1.61 
1.42 
1.20 
.98 
.96 
.73 


1.38 
.91 
.72 

1.35 
.91 

.89 
.97 

.88 
.74 
.68 


0.66 
.70 
.65 

1.32 
.97 

.89 
1.03 

.93 
1.12 

.70 

.68 


0.73 
1.45 
.90 
.71 

.68 

.99 
.87 
.68 
1.41 
.95 
.94 


0.50 
.48 
.43 
.48 
.45 

.45 
.44 
.42 
.50 
1.40 


0.95 
2.40 
1.78 
1.47 
1.10 

1.03 
3.03 
1.88 
1.50 
1.62 
1.54 


1.68 
1.39 
1.65 
1.19 
1.62 

1.25 
1.17 
1.02 
.92 
.88 


1.84 


22 


1.80 


23 


3.40 


24 


1.65 


25 


1.30 


26 


1.45 


27. 


1.38 


28 


1.40 


29 


1.23 


30 


1.30 


31 


1.12 







Daily discharge, in second-feet, 


of Puohakamoa Stream near Huelo, 


Maui, 


for 1912. 


Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


34.5 
45.0 
30.0 
24.5 
23.6 

21.2 
27.5 
24.5 
20.0 
18.8 

15.6 

14.0 
12.8 
12.4 
12.0 

11.2 
10.0 
8.8 
8.0 

7.7 

7.1 
6.5 
5.6 
24.0 
10.0 

5.6 
5.0 

4.8 
4.8 
4.6 

7.7 


4.6 
4.6 
4.6 
4.2 
3.8 

3.4 
3.2 
20.8 
11.2 
5.6 

5.0 
69.0 
53.0 

18.8 
5.6 

5.6 

5.3 

5.6 

54.0 

110.0 

160.0 
88.5 
66.0 
51.0 
51.5 

46.0 
139. 
99.7 
86.4 


85.0 
103.0 
106.0 
68.4 
61.2 

60.0 
90.6 
73.2 
72.0 
81.5 

189.0 
110.0 
145.0 
75.0 
58.8 

48.5 
53.0 
73.8 
78.0 
76.8 

55.2 
45.0 
39.0 
37.5 
34.0 

46.5 
40.0 
34.0 
33.0 
127.0 
64.2 


75.6 

85.7 
100.0 
289.0 
122.0 

72.0 
105.0 
209.0 

88.5 
79.4 

69.0 
85.7 
57.6 
95.5 
69.0 

68.4 
66.0 
60.6 
60.0 

88.5 

68.4 
72.0 
69.0 
71.4 
78.0 

79.4 
64.8 
61.2 
48.0 
43.0 


36.5 
39.0 
54.0 
57.6 
64.8 

53.5 
43.5 
61.8 
43.0 
36.5 

32.5 
29.0 
26.0 
23.6 
20.0 

19.2 

18.8 
18.0 
20.0 
29.0 

28.0 
14.4 
12.0 
20.4 
14.0 

66.6 
55.2 
44.0 
33.0 
32.0 
21.2 


21.2 

20.8 
18.8 
13.6 
9.2 

8.0 

9.2 

24.5 

18.8 

113.0 

72.0 
36.5 
66.0 
32.5 
45.0 

38.5 
31.5 
30.0 
38.0 
39.0 

53.0 
29.5 
20.8 
51.5 
29.5 

28.5 
32.5 
28.0 
21.6 
19.2 


37.0 
59.4 
73.2 
70.8 
48.0 

36.0 
29.0 
66.0 
60.0 
45.0 

41.5 
37.0 
40.5 
55.2 
43.0 

33.0 
29.0 
23.6 
20.0 
19.6 

18.4 
20.0 
18.0 
50.0 
32.5 

28.5 
35.5 
30.5 
40.0 
20.0 
19.2 


m 

20.0 
10.4 
8.8- 

8.4 

9.2 

8.4 

48.0 

33.0 

49.0 
38.5 
45.5 
55.8 
54.0 

43.0 
32.5 
29.5 
35.0 
33.5 

21.2 
57.0 
29.0 
20.4 
19.2 

33.5 
27.5 
19.2 
54.6 
31.5 
31.0 


33.0 
105.0 
60.0 
54.0 
42.5 

54.0 
67.2 
49.0 
36.0 
33.0 

27.5 
24.5 
22.0 
20.0 
19.2 

17.2 

16.8 
13.2 
12.0 
13.6 

12.0 

11.2 
9.2 
11.2 
10.0 

10.0 
9.6 

8.8 
12.0 
54.0 


34.0 
60.0 
46.5 
15.2 
14.0 

12.0 

12.8 
12.8 
34.0 
18.8 

25.0 
28.0 
24.0 
99.0 
41.5 

34.0 
22.0 
20.4 
18.0 
20.0 

31.5 
121.0 
76.8 
58.2 
39.0 

35.5 
171.0 
83.6 
60.0 
67.2 
62.4 


60.0 
49.0 
55.8 
40.5 
29.0 

28.0 
27.0 
28.0 
6.5 
71.4 

60.0 
48.0 
40.0 
34.5 
28.0 

185.0 
102.0 
121.0 
79.4 
69.0 

70.8 
53.5 
69.0 
43.5 
67.2 

46.5 

42.5 
35.0 
30.0 
28.0 


60.0 


2 ; 


106.0 


3 „ 


196.0 


4 


55.2 


5 


57.0 


6 


40.0 


7 


51.5 


8 


43.0 


9 


36.5 


10 


34.0 


11 


28.5 


12 


26.5 


13 


24.5 


14 


34.0 


15 


26.5 


16 


25.0 


17 


25.0 


18 


129.0 


19 


75.0 


20 


70.2 


21.... 


80 8 


22 


78 


23 


201 


24 


69 


25 


49 


26 


57 


27 


53 


28 


54 


29 


45 5 


30 


49 


31 


40 







Monthly discharge of Puohakamoa Stream near Huelo, Maui, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


January 


45.0 
160.0 
189.0 
289.0 

66.6 
113.0 

73.2 

57.0 
105.0 
171.0 
185.0 
201.0 


4.6 

3.2 

33.0 

43.0 

12.0 

8.0 

18.0 

8.4 

8.8 

12.0 

6.5 

24.5 


15.1 
40.9 
73.0 
86.7 
34.4 
33.3 
38.0 
30.4 
28.9 
45.1 
54.9 
61.9 


928 
2,350 
4,490 
5,160 
2,120 
1,980 
2,340 
1,870 
1,720 
2,770 
3,270 
3,810 


B 


February 


B 


March 


B 


April 


B 


May 


A 


June 


A 


July ;. . 


A 


August 


A. 


September 


B. 


October 


B. 


November 


B. 


December 


B. 






The year 


289.0 


3.2 


45.2 


32,800 









168 



WATER RESOURCES OF HAWAII, 1912. 



ALO STREAM NEAR HUELO, MAUI. 

Location. — About 5 miles by trail southeast of Huelo post office, immediately below 
wagon bridge where Old Spreckels ditch trail crosses stream. 

Records available. — December 18, 1910, to December 31, 1912. 

Gage. — Vertical staff; read twice daily, about 5.30 a. m. and 5 p.m.; datum unchanged. 

Channel. — Practically permanent. 

Discharge measurements. — Made by wading. 

Accuracy. — Gage heights at low stages may be affected by inflow from Spreckels 
ditch below the gage. 

Discharge measurements of Alo Stream near Huelo, Maui, in 1912. 



Date. 



Hydrographer. 



Gage 
height. 



Dis- 
charge. 



Sept. 22 
Dec. 20 



J. B. Stewart. 
C.T.Bailey.. 



Feet. 
1.40 
1.90 



Sec.-ft. 
0.97 
5.97 



Daily gage height, in feet, of Alo Stream near Huelo, Maui, for 1912. 

[Tokunaga.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.72 
1.84 
1.70 
1.64 
1.60 

1.58 
1.54 
1.57 
1.59 
1.52 

1.46 
1.44 
1.40 
1.40 
1.38 

1.36 
1.34 
1.32 
1.30 
1.30 

1.30 
1.28 
1.25 
1.40 
1.33 

1.25 
1.22 
1.20 
1.20 
1.18 
1.22 


1.20 
1.18 
1.17 
1.17 
1.13 

1.10 
1.10 
1.39 
1.80 
1.34 

1.34 
1.30 
2.19 

1.78 
1.47 

1.39 

1.32 
1.87 
2.01 
2.29 

2.20 
1.98 
1.90 
1.94 
1.82 

2.24 
2.18 
2.01 
1.96 


2.03 
2.14 
2.10 
1.97 
1.92 

1.91 
1.9& 
1.96 
2.04 
2.12 

2.48 
2.15 
2.50 
2.13 
1.94 

1.90 
1.95 
1.98 
1.97 
1.96 

1.89 
1.82 
1.80 

1.78 
1.78 

1.89 
1.80 
1.74 
1.63 
1.90 
1.88 


2.00 
1.88 
2.10 
3.00 
2.48 

2.04 
2.10 
2.56 
2.15 
2.19 

1.98 
2.10 
2.02 
2.11 
2.06 

2.06 
2.00 
-1.93 
1.91 
2.09 

1.92 
1.92 
1.89 
1.90 
1.96 

1.99 
1.96 
1.90 
1.84 
1.80 


1.72 
1.76 
1.89 
1.94 
1.95 

1.94 
1.84 
1.96 
1.80 
1.72 

1.68 
1.66 
1.60 
1.60 
1.56 

1.52 
1.50 
1.49 
1.53 
1.70 

1.55 
1.43 
1.40 
1.54 
1.40 

1.80 
2.12 
1.86 
1.91 
1.80 
1.64 


1.56 
1.52 
1.50 
1.44 
1.40 

1.40 
1.40 
1.62 
1.52 
1.94 

1.86 
1.76 
1.82 
1.73 
1.79 

1.78 
1.72 
1.67 
1.59 
1.76 

1.70 
1.84 
1.72 
1.63 
1.96 

1.72 
1.65 
1.75 
1.66 
1.54 


1.60 
1.70 

1.82 
1.92 
1.84 

1,72 
1.66 
1.76 
2.00 
1.83 

1.96 
1.79 
1.86 
1.90 
1.78 

1.70 
1.66 
1.61 
1.58 
1.56 

1.49 
1.51 
1.50 
1.88 
1.74 

1.63 
1.67 
1.68 
1.64 
1.62 
1.53 


1.50 
1.48 
1.49 
1.45 
1.41 

1.40 
1.41 
1.40 

1.78 
1.74 

1.91 
1.84 
1.80 
1.86 
2.14 

1.85 
1.74 
1.65 
1.74 
1.60 

1.58 
1.90 
1.68 
1.56 
1.51 

1.57 
1.60 
1.51 
1.80 
1.69 
1.74 


1.70 
2.12 
1.93 
2.02 
1.85 

1.88 
2.02 
1.84 
1.76 
1.70 

1.64 
1.60 
1.56 
1.52 
1.50 

1.44 
1.44 
1.40 
1.40 
1.42 

1.38 
1.36 
1.34 
1.40 
1.34 

1.33 
1.32 
1.30 
1.35 
2.02 


1.60 
1.72 
1.64 
1.44 
1.40 

1.36 
1.39 
1.38 
1.44 
1.42 

1.36 
1.68 
1.62 
2.22 
2.11 

1.68 
1.28 
1.52 
1.48 
1.54 

2.36 
2.11 
2.02 
1.94 
1.86 

1.85 
3.00 
2.34 
1.98 
2.03 
1.98 


1.96 
1.90 
2.06 

1.88 
1.80 

1.73 
1.66 
1.62 

2.78 
1.92 

2.02 
1.85 
1.78 
1.77 
1.71 

2.44 
2.19 
2.46 
2.04 
1.97 

1.92 
1.91 
1.94 
1.94 
1.88 

1.88 
1.82 
1.78 
1.72 
1.75 


1.82 


2 


2.26 


3 


1.75 


4 


1.62 


5 


1.61 


6 


1.64 


7 


1.54 


8 


1.40 


9 


1.34 


10 


1.29 


11 


1.64 


12 


1.60 


13 


1.48 


14. 


1.60 


15 


1.58 


16 


1.70 


17 


1.66 


18 


2.30 


19 


2.16 


20 


1.82 


21 


2.29 


22 


2.22 


23 


2.21 


24 


1.93 


25 


1.90 


26 


2.04 


27 


1.92 


28 


1.96 


29 


1.92 


30 


1.90 


31 


1.86 







Daily discharge, in second-feet, of Alo Stream near Huelo, Maui, for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


3.2 


0.4 


10.2 


9.0 


3.2 


1.8 


2.0 


1.5 


3.0 


2.0 


7.8 


4.8 


.4 


15.4 


5.6 


3.6 


1.6 


3.0 


1.4 


14.2 


3.2 


6.0 


3.0 


.3 


13.0 


13.0 


5.8 


1.5 


4.4 


1.4 


6.9 


2.4 


11.4 


2.4 


.3 


8.1 


81.0 


7.2 


1.2 


6.6 


1.2 


9.8 


1.2 


5.6 


2.0 


.3 


6.6 


37.6 


7.5 


1.0 


4.8 


1.1 


5.0 


1.0 


4.0 


1.9 


.2 


6.3 


10.6 


7.2 


1.0 


3.2 


1.0 


5.6 


.9 


3.3 


1.7 


.2 


7.8 


13.0 


4.8 


1.0 


2.6 


1.1 


9.8 


1.0 


2.6 


1.8 


1.0 


7.8 


43.8 


7.8 


2.2 


3.6 


1.0 


4.8 


.9 


2.2 


2.0 


4.0 


10.6 


16.0 


4.0 


1.6 


9.0 


3.8 


3.6 


1.2 


61.4 


1.6 


.8 


14.2 


18.4 


3.2 


7.2 


4.6 


3.4 


3.0 


1.1 


6.6 J 



Dec. 



2 
3 
4 
5 

6 

7 

8 

9 

10 



4.4 
22.6 
3.5 
2.2 
2.1 

2.4 

1.7 
1.0 

.8 

.7 



ISLAND OF MAUI. 169 

Daily discharge, in second-feet, of Alo Stream near Huelo, Maui, for 1912 — Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


11 


1.3 
1.2 
1.0 
1.0 
.9 

.9 

.8 
.8 
.7 
.7 

.7 

.6 

.6 

1.0 

.8 

.6 
.5 
.4 
.4 
.4 
.5 


0.8 
.7 
18.4 
3.8 
1.4 

1.0 

.8 

5.4 

9.4 

24.4 

19.0 

8.4 
6.0 
7.2 
4.4 

21.4 

17.8 
9.4 

7.8 


37.6 
16.0 
39.0 
14.8 
7.2 

6.0 
7.5 
8.4 
8.1 

7.8 

5.8 
4.4 
4.0 
3.8 
3.8 

5.8 
4.0 
3.4 
2.3 
6.0 
5.6 


8.4 
13.0 

9.8 
13.6 
11.4 

11.4 
9.0 
6.9 
6.3 

12.6 

6.6 
6.6 
5.8 
6.0 

7.8 

8.7 
7.8 
6.0 
4.8 
4.0 


2.8 
2.6 
2.0 

2.0 

1.8 

1.6 
1.5 
1.4 
1.6 
3.0 

1.8 
1.2 
1.0 
1.7 
1.0 

4.0 
14.2 
5.2 
6.3 
4.0 
2.4 


5.2 
3.6 
4.4 
3.3 
3.9 

3.8 
3.2 
2.7 
2.0 
3.6 

3.0 
4.8 
3.2 
2.3 

7.8 

3.2 
2.5 
3.5 
2.6 

1.7 


7.8 
3.9 
5.2 
6.0 
3.8 

3.0 
2.6 
2.1 
1.9 
1.8 

1.4 
1.6 
1.5 
5.6 
3.4 

2.3 
2.7 
2.8 
3.4 
2.2 
1.6 


6.3 
4.8 
4.0 
5.2 
15.4 

5.0 
3.4 
2.5 
3.4 
2.0 

1.9 
6.0 
2.8 
1.8 
1.6 

1.8 
2.0 
1.6 
4.0 
2.9 
3.4 


2.4 
2.0 
1.8 
1.6 
1.5 

1.2 
1.2 
1.0 
1.0 
1.1 

.9 
.9 
.8 
1.0 
.8 

.8 
.8 
.7 
.8 
9.8 


0.9 
2.8 
2.2 
20.2 
13.6 

2.8 
.6 
1.6 
1.4 
1.7 

29.2 

13.6 

9.8 

7.2 

5.2 

5.0 
81.0 

27.8 
8.4 

10.2 
8.4 


9.8 
5.0 
3.8 
3.7 
3.1 

34.8 
18.4 
36.2 
10.6 
8.1 

6.6 
6.3 

7.2 
7.2 
5.6 

5.6 
4.4 
3.8 
3.2 
3.5 


2.4 


12 


2.0 


13 


1.4 


14 


2.0 


15 


1.9 


16 


3.0 


17 


2.6 


18 


25.0 


19 


16.6 


20 


4.4 


21 


24.4 


22 


20.2 


23 


19.6 




6.9 


25 


6.0 


26 


10.6 




6.6 


28 


7.8 




6.6 


30 


6.0 




5.2 







Monthly discharge of Alo Stream near Huelo, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. 



Minimum. 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

Novermber 

December 

The year 



4.8 
24.4 
39.0 
81.0 
14.2 
7.8 
9.0 
15.4 
14.2 
81.0 
61.4 
25.0 



81.0 



0.4 

.2 

2.3 

4.0 

1.0 

1.0 

1.4 

1.0 

.7 

.6 

2.2 

.7 



1.30 
6.05 
9.72 
13.80 
3.79 
3.01 
3.56 
3.18 
3.26 
8.66 
9.93 
7.21 



79.9 
348.0 
598.0 
821.0 
233.0 
179.0 
219.0 
196.0 
194.0 
532.0 
591.0 
443.0 



4,430.0 



WAIKAMOI STREAM NEAR HUELO, MAUI. 

Location. — About 4£ miles by trail southeast of Huelo and about 500 feet above 
junction of stream and Spreckels ditch; about 50 feet above trail bridge. 

Records available. — December 16, 1910, to December 31, 1912. 

Gage. — Inclined staff; read twice daily, at 5.15 a. m. and about 5 p. m.; datum 
unchanged. 

Channel. — Practically permanent. 

Discharge measurements. — Made by wading. 

Accuracy. — Good . 

Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 

Discharge measurements of Waihamoi Stream near Huelo, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Sept. 22 


J. B. Stewart 


Feet. 
1.27 
1.60 


Sec-feet. 
1.48 


Nov. 8 


do 


5.43 









170 WATEE EESOUECES OF HAWAII, 1912. 

Daily gage height, in feet, of Waikamoi Stream near Huelo, Maui, for 1912. 

Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


1.62 


1.09 


2.16 


2.36 


1.64 


1.48 


1.54 


1.41 


1.54 


1.50 


1.95 


1.62 


1.03 


2.46 


2.04 


1.72 


1.47 


1.62 


1.38 


2.48 


1.75 


1.82 


1.60 


1.02 


2.46 


2.18 


1.82 


1.46 


1.79 


1.40 


1.87 


1.68 


2.00 


1.56 


1.10 


2.11 


3.08 


1.66 


1.42 


1.96 


1.37 


1.82 


1.50 


1.74 


1.52 


1.06 


1.99 


3.16 


1.84 


1.40 


1.57 


1.32 


1.66 


1.42 


1.69 


1.50 


.99 


1.96 


2.26 


1.78 


1.36 


1.64 


1.28 


1.70 


1.37 


1.58 


1.48 


.95 


2.22 


2.64 


1.71 


1.36 


1.58 


1.32 


2.34 


1.38 


1.58 


1.52 


1.08 


2.04 


2.92 


1.78 


1.52 


1.60 


1.29 


1.72 


1.36 


1.57 


1.54 


1.37 


2.00 


2.39 


1.68 


1.46 


1.94 


1.60 


1 62 


1.37 


3.69 


1.49 


1.30 


2.22 


2.24 


1.61 


1.84 


1.74 


1.54 


1.56 


1.44 


2.18 


1.46 


1.29 


2.82 


2.00 


1.54 


1.74 


1.78 


1.80 


1.53 


1.36 


2.09 


lr44 


1.28 


2.56 


2.57 


1.51 


1.67 


1.64 


1.73 


1.50 


1.52 


1 84 


1.42 


1.78 


2.46 


1.95 


1.50 


1.74 


1.78 


1.59 


1.48 


1.58 


1.72 


1.40 


1.76 


2.10 


2.18 


1.54 


1.64 


1.79 


1.81 


1.46 


2.42 


1.68 


1.38 


1.44 


1.93 


2.10 


1.52 


1.64 


1.67 


2.28 


1.43 


1.75 


1.63 


1.36 


1.28 


1.78 


2.06 


1.49 


1.74 


1.60 


1.74 


1.40 


1.66 


2.74 


1.34 


1.20 


1.82 


2.06 


1.48 


1.60 


1.56 


1.60 


1.40 


1.53 


2.60 


1.32 


1.18 


2.14 


1.93 


1.46 


1.52 


1.53 


1.53 


1.36 


1.49 


2.66 


1.31 


1.60 


1.88 


1.86 


1.50 


1.64 


1.50 


1.56 


1.32 


1.47 


2.60 


1.30 


2.88 


1.89 


2.21 


1.58 


1.56 


1.48 


1.51 


1.34 


1.50 


1.99 


1.28 


3.40 


1.78 


1.94 


1.50 


1.58 


1.49 


1.48 


1.31 


2.24 


2.00 


1.28 


2.38 


1.70 


1.83 


1.43 


1.57 


1.46 


1.72 


1.26 


2.41 


1.98 


1.24 


1.95 


1.66 


1.79 


1.40 


1.54 


1.42 


1.58 


1.24 


2.16 


1.90 


1.40 


1.74 


1.66 


1.78 


1.48 


1.74 


1.68 


1.50 


1.22 


1.92 


1.77 


1.47 


1.77 


1.68 


1.85 


1.41 


1.63 


1.61 


1.46 


1.18 


1.74 


1.79 


1.26 


1.64 


2.26 


1.89 


1.70 


1.53 


1.54 


1.46 


1.16 


1.76 


1.84 


1.22 


3.30 


1.81 


1.86 


2.00 


1.66 


1.58 


1.46 


1.13 


2.84 


1.72 


1.19 


2.50 


1.68 


1.78 


1.62 


1.58 


1.54 


1.43 


1.08 


2.18 


1.69 


1.16 


2.16 


1.62 


1.72 


1.68 


1.51 


1.56 


1.65 


1.14 


1.91 


1.63 


1.12 




2.80 


1.68 


1.56 


1.48 


1.50 


1.55 


2.01 


2.03 


1.66 


1.11 




2.86 




1.52 




1.46 


1.54 




1.99 





Daily discharge, in second-feet, of Waikamoi Stream near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


6.4 
6.4 
6.0 
5.2 
4.4 

4.0 
3.8 
4.4 
4.8 
3.9 

3.6 
3.4 
3.2 
3.0 
2.8 

2.6 
2.4 
2.2 
2.1 
2.0 

1.8 
1.8 
1.4 
3.0 
3.7 

1.6 
1.2 
1.0 

.8 
.6 
.6 


0.5 
.5 
.5 
.5 
.5 

.5 
.5 
.5 

2.7 
2.0 

1.9 
1.8 
9.6 
9.2 
3.4 

1.8 

1.0 

.9 

6.0 

48.0 

74.0 
27.4 
14.5 
8.8 
9.4 

6.8 

32! 

20.8 


20.8 
30.4 
30.4 
19.3 
15.7 

14.8 
22.6 
17.2 
16.0 
22.6 

45.0 
34.4 
30.4 
19.0 
13.9 

9.6 
10.6 
20.2 
12.4 
12.7 

9.6 
8.0 
7.2 
7.2 

7.6 

23.8 
10.3 
7.6 
6.4 
44.0 
47.0 


26.8 
17.2 
21.4 
58.0 
62.0 

23.8 
37.6 
50.0 
27.7 
23.2 

16.0 
34.8 
14.5 
21.4 
19.0 

17.8 
17.8 
13.9 
11.8 
22.3 

14.2 
10.9 
9.8 
9.6 
11.5 

12.7 
11.8 
9.6 
8.4 
7.6 


6.8 
8.4 

10.6 
7.2 

11.2 

9.6 
8.2 
9.6 
7.6 
6.2 

4.8 
4.2 
4.0 
4.8 
4.4 

3.9 
3.8 
3.6 
4.0 
5.6 

4.0 
3.3 
3.0 
3.8 
3.1 

8.0 
16.0 
6.4 
7.6 
5.2 
4.4 


3.8 
3.7 
3.6 
3.2 
3.0 

2.6 
2.6 
4.4 
3.6 
11.2 

8.8 
7.4 
8.8 
6.8 
6.8 

8.8 
6.0 
4.4 
6.8 
5.2 

5.6 
5.4 
4.8 
8.8 
6.6 

4.6 
7.2 
5.6 
4.2 
3.8 


4.8 
6.4 
9.8 
14.8 
5.4 

6.8 
5.6 
6.0 
14.2 

8.8 

9.6 
6.8 
9.6 
9.8 
7.4 

6.0 
5.2 
4.6 
4.0 
3.8 

3.9 
3.6 
3.2 

7.6 
6.2 

4.8 
5.6 
4.8 
5.2 
4.0 
3.6 


3.1 
2.8 
3.0 
2:7 
2.2 

1.8 
2.2 
1.9 
6.0 

4.8 

10.0 
8.6 
' 5.8 
10.3 
24.4 

8.8 
6.0 
4.6 
5.2 
4.2 

3.8 
8.4 
5.6 
4.0 
3.6 

3.6 
3.6 
3.3 
7.0 
5.0 
4.8 


4.8 
31.2 
12.1 
10.6 

7.2 

8.0 
26.2 
8.4 
6.4 
5.2 

4.6 
4.0 
3.8 
3.6 
3.3 

3.0 
3.0 
2.6 
2.2 
2.4 

2.1 
1.6 
1.4 
1.2 
.9 

.8 
.6 
.5 
.7 
16.3 


4.0 
9.0 
7.6 
4.0 
3.2 

2.7 
2.8 
2.6 
2.7 
3.4 

2.6 
4.4 
5.6 
28.8 
9.0 

7.2 
4.6 
3.9 
3.7 
4.0 

23.2 

28.4 
20.8 
13.6 
8.8 

9.2 
46.0 
21.4 
13.3 
16.9 
15.7 


14.5 
10.6 
16.0 
8.8 

7.8 

5.6 
5.6 
5.4 

88.5 
21.4 

18.7 
11.2 
8.4 
7.6 
6.6 

41.6 
36.0 
38.4 
36.0 
15.7 

16.0 
15.4 
13.0 
9.4 
9.8 

11.2 

8.4 
7.8 
6.6 
7.2 


20.2 


2 


24.4 


3 


65.0 


4 


12.7 


5 


10.6 


6 


10.0 


7 


9.2 


8 


9.2 


9 


8.8 


10 


8.2 


11 


6.4 


12 > 


6.4 


13 


6.0 


14 


6.4 


15 


6.0 


16 


7.2 


17 


6.2 


18 


7.2 


19 


12.4 


20 


8.8 


21 


31.2 


22 


18.4 


23 


22.9 


24 


12.4 


25 


11.2 


26 


20.2 


27 


16.0 


28 


11.8 


29 


9.8 


30 


9.6 


31 


8.8 







ISLAND OF MAUI. 171 

Monthly discharge of Waikamoi Stream near Huelo, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March.. 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



74.0 
47.0 
62.0 
16.0 
11.2 
14.8 
24.4 
31.2 
46.0 
88.5 
65.0 



0.6 
.5 
6.4 
7.6 
3.0 
2.6 
3.2 
1.8 
.5 
2.6 
5.4 
6.0 



3.04 
12.20 
19.20 
21.40 
6.24 
5.60 
6.51 
5.52 
5.96 
10.70 
17.00 
13.70 



187 

702 

1,180 

1,270 

384 

333 

400 

339 

355 

658 

1,010 

842 



88.5 



.5 



10.1 



7,« 



OOPUOLA STREAM NEAR HUELO, MAUI. 

Location. — About 2 miles by trail southeast of Huelo, and about 400 feet above 

Spreckels ditch crossing. 
Records available. — December 16, 1910, to December 31, 1912. 
Gage. — Vertical staff; read once daily, at no regular hour; datum unchanged. 
Channel.— Shifting. 

Discharge measurements. — Made by wading. 
Accuracy. — Fair. 

The following discharge measurement was made by J. B. Stewart: 
September 22, 1912: Gage height, 0.88 foot; discharge, 0.46 second-foot. 

Daily gage height, in feet, of Oopuola Stream near Huelo, Maui, for 1912. 
[John Pachero, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov 


Dec. 


1 




1.00 
1.00 
.95 

"".'90' 

.89 
.89 
.88 
1.20 
1.02 

1.20 
1.20 
2.30 
2.25 
1.13 

1.12 
1.11 

"i.'40" 
3.30 

2.40 
2.09 
1.70 
1.30 

1.30 
3.00 
1.90 
1.68 


1.55 
2.20 

"i.*50' 
1.49 

1.43 
1.50 
1.40 
1.45 

2.00 
1.90 
1.88 
1.70 
1.42 

1.38 


1.50 
1.62 
1.70 
2.70 
1.50 

1.42 

"iVn 

1.48 
1.47 

1.46 
1.70 
1.54 

"2*60" 

1.98 


1.12 
1.14 
1.11 
1.62 

1.36 
1.28 


1.10 

"i.'os" 

1.02 
1.01 

1.00 
1.02 
1.20 


1.09 
1.15 
1.14 


0.98 
.97 
1.00 


"i. : 70* 
1.25 
1.80 
1.25 

1.12 
1.52 

""L'62" 
1.01 

1.00 
.99 
.95 
.94 

.94 
.91 
.90 
.90 
.90 

.90 

"*.'82" 
.82 
.80 

.82 
.79 
.79 
1.40 


1.35 

1.82 
1.40 
.92 
.91 

"".'96* 
.93 
1.00 
1.00 

.91 
1.20 

"i.56" 
1.52 

1.00 
1.00 
1.00 
.99 

1.50 
2.80 
2.20 
1.50 
1.45 

1.20 

"i'io" 
1.45 

1.60 
1.50 


1.45 
1.30 

*i.3i' 

1.30 
1.10 
1.08 
2.51 

1.50 
1.40 
1.20 
1.17 
1.07 

2.60 

"2.'i6" 
1.12 
1.10 

1.20 
1.30 
1.00 

"""."36" 

1.85 
1.20 
1.80 
1.70 
1.10 




2 




3 10 


3 


1.22 
1.20 
1.20 

1.22 


2 40 


4 


1.80 


5 


"i.62" 

2.05 
1.16 

1.14 
1.12 
1.12 

"i.'ii' 
1.10 

1.09 
1.08 
1.04 
1.02 

"i."03" 
1.02 
1.31 
1.30 

1.03 
1.02 

"i.'i2* 

1.10 
.99 


.97 

.92 
.98 
.92 
1.40 
1.35 

'"i."30* 
1.40 
1.32 
1.48 

1.35 
1.26 

'"i.'20" 
1.02 

1.00 
1.20 
1.14 
1.08 

.97 
.98 
.97 
1.02 
1.00 
1.02 


1.60 


6 


1 50 


7 


1 55 


8 






9 


1.21 
1.12 

1.11 
1.10 
1.07 


1 30 


10 


1.15 

1.10 

"i.'02" 
1.00 
1.00 

.92 
.92 
.91 

"l."i3~ 

1.10 

.90 
.90 
1.15 
1.00 

"i."42" 
1.62 
1.51 
1.22 
1.20 


2.20 

1.80 
1.72 
1.32 
1.30 
1.28 

*"i."22' 
1.10 
1.08 
1.08 

1.20 
1.09 

"i.32" 

1.22 

1.10 
1.08 
1.10 
1.01 


1.28 


11 


1.20 


12 


1.18 


13 


1.10 


14 


1 11 


15 


1.04 

1.02 
1.01 
1.00 
1.00 
1.00 


1 40 


16 




17 .. 


1 30 


18 


2.10 
1.50 
1.45 

1.42 

1.38 
1.22 

"i.30* 

1.34 

"i.'io" 

1.09 
1.52 


"Lio" 

1.50 

"i.*32" 

1.30 
1.29 
1.50 

1.62 

1.50 

"i.32" 


1.45 


19 


2.00 


20 


1.52 


21 


2.10 


22 


1.00 
.99 
1.13 
1.12 

1.00 
1.00 




23 


1.72 


24 


1.61 


25 




26 


1.11 


27 


1 09 


28 


2.01 


29 


.95 
.94 
1.12 




30 


1 23 


31 


1.20 













172 



Daily discharge, in second-feet, of Oopuola Stream near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


2.0 
2.0 
2.0 
1.8 
1.8 

2.0 
2.0 
1.9 
1.9 
1.3 

1.3 
1.2 
1.1 
1.1 
1.0 

1.0 
.9 
.9 
.9 
.9 

.9 

.9 

.9 

1.4 

1.3 

.9 
.9 
.9 
.8 
.8 
1.3 


0.9 
.9 

.8 
.8 

.7 

.7 

.7 

.7 

1.8 

1.0 

1.8 

1.8 

21.0 

19.5 

1.4 

1.3 
1.3 
2.4 
3.6 
62.0 

24.0 
15.8 
8.0 
2.6 
2.6 

2.6 
46.0 
12.0 

7.7 


5.6 
18.0 
11.4 
4.8 
4.7 

4.0 
4.8 
3.6 
4.2 
9.1 

14.0 
12.0 
11.6 
8.0 
3.8 

3.4 
9.7 
16.0 
4.8 
4.2 

3.8 
3.4 
2.0 
2.3 
2.6 

3.0 
2.1 
1.2 
1.2 
5.1 
4.9 


4.8 
6.7 
8.0 
34.0 
4.8 

3.8 
6.1 

8.4 
4.6 
4.4 

4.3 
8.0 
5.4 
9.7 
14.0 

13.6 
10.3 
7.0 
3.6 

4.8 

3.8 
2.8 
2.6 
2.5 

4.8 

6.7 
4.8 
3.8 
2.8 
2.0 


1.3 
1.4 
1.3 
6.7 
4.9 

3.2 
2.4 
2.1 

1.8 
1.5 

1.2 

1.1 

1.0 

.9 

.9 

.7 

.7 

.7 

1.0 

1.4 

1.2 

.7 

.7 

1.5 

.9 

2.4 
3.8 
6.7 
5.0 
2.0 
1.8 


1.2 
1.2 
1.1 
1.0 
.9 

.9 

1.0 

1.8 

9.9 

18.0 

10.0 

8.4 
2.8 
2.6 
2.4 

2.2 
2.0 
1.2 
1.1 
1.1 

1.8 
1.2 
2.0 
2.8 
2.0 

1.2 
1.1 
1.2 
.9 
1.0 


1.2 
1.5 
1.4 
1.4 
1.3 

1.2 
1.1 
1.0 
15.0 
1.6 

1.4 
1.3 
1.3 
1.3 
1.3 

1.2 
1.2 
1.1 
1.0 
1.0 

1.0 
1.0 
1.0 
2.7 
2.6 

1.0 
1.0 
1.1 
1.3 
1.2 
.9 


0.9 
.8 
.9 

.8 
.8 

.7 

.8 

.7 

3.6 

3.1 

2.8 
2.6 
3.6 
2.8 
4.6 

3.1 
2.3 
2.0 

1.8 
1.0 

.9 
1.8 
1.4 
1.1 
1.0 

.8 
.8 
.8 

1.0 
.9 

1.0 


4.5 
8.0 
2.2 
10.0 
2.2 

1.3 
5.1 
3.0 
1.0 
.9 

.9 
.9 

.8 
.8 
.8 

.8 
.7 
.7 
.7 
.7 

.7 
.7 
.6 
.6 
.6 

.6 

.6 

.6 

3.6 

3.4 


3.1 
10.4 
3.6 

.7 
.7 

.7 
.7 
.8 
.9 
.9 

.7 
1.8 
3.3 
4.8 
5.1 

.9 
.9 
.9 
.9 
2.9 

4.8 
38.0 
18.0 
4.8 
4.2 

1.8 
8.9 
16.0 

4.2 
6.4 
4.8 


4.2 
2.6 
2.6 
2.7 
2.6 

2.6 

1.2 

1.1 

27.3 

16.1 

4.8 
3.6 
1.8 
1.6 
1.1 

30.0 

23.0 

16.0 

1.3 

1.2 

1.8 

2.6 

.9 

.5 

.1 

11.0 
1.8 

10.0 
8.0 
1.2 


26.1 


2 


51.0 


3 


24.0 


4 


10.0 


5 


6.4 


6 


4.8 


7 


5.6 


8 


4.1 


9 


2.6 


10 


2.4 


11 


1.8 


12 


1.7 


13 


1.2 


14 


1.3 


15 


3.6 


16 


3.1 


17 


2.6 


18 


4.2 


19 


14.0 


20 


5.1 


21 


16.0 


22 


12.2 


23 


8.4 


24 


6.6 


25 


4.0 


26 


1.3 


27 


1.2 


28 


14.2 


29 


8.1 


30 


2.0 


31 


1.8 







Monthly discharge of Oopuola Stream near Huelo, Maui, for 1912. 



Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


January 


2.0 
62.0 
18.0 
34.0 

6.7 
18.0 
15.0 

4.6 
10.0 
38.0 
30.0 
51.0 


0.8 
.7 

1.2 

2.0 
.7 
.9 
.9 
.7 
.6 
.7 
.1 

1.2 


1.29 
8.50 
6.11 
6.76 
2.03 
2.87 
1.73 
1.65 
1.93 
5.05 
6.18 
8.11 


79.3 

489.0 
376.0 
402.0 
125.0 
171.0 
106.0 
101.0 
115.0 
311.0 
368.0 
499.0 


C. 


February 


C. 


March 


C. 


April 


C. 


May 


C. 


June ■. 


C. 


July 


c. 


August 


c. 


September 


c. 


October 


c. 


November 


c. 


December 


c. 






The year 


62.0 


.1 


4.32 


3,140.0 









SPB.ECKELS DITCH AT STATION NO. 1, NEAR HUELO, MAUI. 

Location. — About 8J miles by trail southeast of Huelo, and about 20 feet above 

bridge which crosses ditch in Ulawina Gulch. 
Records available. — December 18, 1910, to December 31, 1912. 
Gage. — Vertical staff; read twice daily, about 5.30 a. m. and 4.30 p. m.; datum 

unchanged. 
Channel. — Permanent. 

Discharge measurements. — Made by wading and from log near gage. 
Accuracy. — Records good. 



ISLAND OF MAUI. 173 

Discharge measurements of Spreckels ditch at station No. 1, near JHuelo, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Sept. 23 
Nov 10 


J. B. Stewart 


Feet. 
0.20 
1.50 


Sec.-ft. 
2.78 


.do 


36.8 









Daily gage height, in feet, of Sjpreckels ditch at station No. 1, near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.50 
.56 
.50 
.44 
.39 

.35 
.34 
.39 
.41 
.32 

.28 
.26 
.22 
.20 

.18 

.17 
.16 
.14 
.19 
.13 

.11 

.10 
.10 
.25 
.22 

.14 
.10 
.09 
.08 
.06 
.10 


0.08 
.05 
.06 
.06 
.04 

.02 
.02 
.12 
.65 
.19 

.16 
.12 
1.32 
.59 
.27 

.18 

.16 

.14 

1.32 

1.75 

1.86 

1.82 

1.22 

.84 

.90 

1.28 
1.76 
1.70 
1.52 


1.55 
1.68 
1.68 
1.55 

1.48 

1.38 
1.60 
1.35 
1.52 
1.50 

1.72 
1.92 
1.72 
1.22 
1.22 

.89 

.88 

1.52 

1.28 

1.12 

1.02 
.70 
.82 
.73 
.70 

1.42 

.78 

.69 

.54 

1.69 

1.70 


1.58 
1.40 
1.65 
2.08 
1.72 

1.10 
1.72 
1.48 
1.32 
1.59 

1.38 
1.58 
1.25 
1.52 
1.35 

1.64 
1.55 
1.18 
.96 
1.38 

1.19 

1.18 

.89 

.85 

1.40 

1.32 

1.32 

.90 

.76 

.76 


0.62 
.62 
1.25 
1.58 
1.18 

1.09 

.78 

1.32 

.75 

.62 

.56 
.50 
.46 
.46 
.40 

.40 
.36 
.36 
.39 
.55 

.43 
.32 
.29 
.36 

.28 

1.00 
1.31 
.70 
.66 
.46 
.44 


0.38 
.39 
.33 
.28 
.26 

.25 
.29 
.49 
.46 
1.04 

1.04 
.66 
.86 
.62 

.74 

.75 
.54 
.46 
.74 
.72 

.92 
.58 
.49 
.84 
.54 

.46 
.82 
.54 
.42 
.59 


0.47 
.69 
.92 
.95 
.79 

.61 

.54 

1.04 

1.36 

.80 

.89 
.65 
.92 
1.05 
.65 

.52 
.48 
.49 
.41 
.42 

.42 
.39 
.35 

.84 
.67 

.51 
.50 
.59 
.67 
.46 
.39 


0.38 
.36 
.36 
.33 
.29 

.28 
.29 
.26 
.71 
.64 

1.12 
.86 
.80 

1.07 

.88 

.80 
.59 
.66 
.68 
.49 

.44 
.68 
.59 
.44 
.39 

.49 
.46 
.39 

.74 
.55 
.61 


0.51 

1.75 

.80 

1.36 

.74 

.88 
1.54 
.75 
.62 
.56 

.49 
.42 
.39 
.36 
.34 

.30 
.31 
.28 
.25 
.26 

.23 
.20 
.20 
.33 
.20 

.20 
.16 
.13 
.20 
1.20 


0.46 
.99 
.58 
.40 
.34 

.33 
.34 
.34 

.49 
.44 

.46 

.66 

.89 

1.52 

1.20 

.55 
.42 
.40 
.40 

.48 

1.80 
1.75 
1.62 
1.34 

.78 

.96 
1.95 
1.64 
1.00 
1.42 
1.38 


1.22 
.84 

1.34 
.66 
.69 

.52 

.48 

.45 

1.98 

1.22 

1.60 

.84 

!58 
.52 

1.92 
1.70 
1.88 
1.50 
1.36 

1.24 

.94 

.58 

1.32 

1.60 

.90 
.64 
.65 
.61 
.65 


1.30 


2 


2.04 


3 


1.46 


4 


1.45 


5 




6 


.79 


7 


1.25 


8 


.84 


9 


.75 


10 


.64 


11 


.56 


12 


.52 


13 


.46 


14 


.53 


15 


.5 


16 


.54 


17 


.48 


18 


1.30 


19 


1.68 


20 


1.02 


21 


1.66 


22 


1.85 


23 


1.38 


24 


1.36 


25 


1.04 


26 


1.25 


27 


1.32 


28 


1.22 


29 


1.35 


30 


.75 


31 


.70 







Daily discharge, in second-feet, of Sjpreckels ditch at station No. 1, near Huelo, Maui, 

for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


8.0 


1.0 


33.5 


34.4 


10.4 


5.8 


7.5 


5.8 


8.2 


7.3 


24.5 


9.2 


.6 


37.4 


29.0 


10.4 


6.0 


11.8 


5.5 


39.5 


18.8 


15.0 


8.0 


.7 


37.4 


36.5 


25.2 


4.9 


17.0 


5.5 


14.0 


9.6 


27.5 


6.9 


.7 


33.5 


49.4 


34.4 


4.1 


17.8 


4.9 


28.0 


6.2 


11.2 


6.0 


.5 


31.4 


38.6 


23.5 


3.7 


13.8 


4.2 


12.8 


5.1 


11.8 


5.3 


.2 


28.5 


21.5 


21.2 


3.6 


10.2 


4.1 


16.0 


4.9 


8.4 


5.1 


.2 


35.0 


38.6 


13.6 


4.2 


8.8 


4.2 


33.2 


5.1 


7.6 


6.0 


1.5 


27.8 


31.4 


27.0 


7.8 


20.0 


3.7 


13.0 


5.1 


7.1 


6.4 


11.0 


32.6 


27.0 


13.0 


7.3 


25.5 


12.2 


10.4 


7.8 


46.4 


4.8 


2.6 


32.0 


34.7 


10.4 


20.0 


14.0 


10.8 


9.2 


6.9 


24.5 


4.1 


2.1 


38.6 


28.5 


9.2 


20.0 


16.2 


22.0 


7.8 


7.3 


35.0 


3.7 


1.5 


44.6 


34.4 


8.0 


11.2 


11.0 


15.5 


6.6 


11.2 


15.0 


3.0 


27.0 


38.6 


25.2 


7.3 


15.5 


17.0 


14.0 


6.0 


16.2 


11.8 


2.7 


9.8 


24.5 


32.6 


7.3 


10.4 


20.2 


20.8 


5.5 


32.6 


9.6 


2.4 


• 3.9 


24.5 


27.8 


6.2 


12.8 


11.0 


16.0 


5.1 


24.0 


8.4 


2.2 


2.4 


16.2 


36.2 


6.2 


13.0 


8.4 


14.0 


4.4 


9.0 


44.6 


2.1 


2.1 


16.0 


33.5 


5.5 


8.8 


7.6 


9.8 


4.6 


6.6 


38.0 


1.8 


1.8 


32.6 


23.5 


5.5 


7.3 


7.8 


11.2 


4.1 


6.2 


43.4 


2.6 


27.0 


26.0 


18.0 


6.0 


12.8 


6.4 


11.6 


3.6 


6.2 


32.0 


1.6 


39.5 


22.0 


27.0 


9.0 


12.4 


6.6 


7.8 


3.7 


7.6 


28.0 



Dec. 



2. 
3. 
4. 

5. 

6, 

7, 
8, 
9 
10 

11 
12 
13 
14 
15 

16 

17 
18 
19 
20 



26.5 
48.2 
30.8 
30.5 
22.1 

13.8 
25.2 
15.0 
13.0 
10.8 

9.2 
8.4 
7.3 
9.6 
8.6 

8.8 
7.6 
26.5 
37.4 
19.5 



174 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, of Sprechels ditch at station No. 1, near Huelo, Maui, 

for 1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


21 


1.4 
1.2 
1.2 
3.6 
3.0 

1.8 
1.2 
1.1 
1.0 
.7 
1.2 


42.8 
41.6 
24.5 
15.0 
16.5 

26.0 
39.8 
38.0 
32.6 


19.5 
12.0 
14.5 
12.6 
12.0 

29.6 
13.6 
11.8 
8.8 
37.7 
38.0 


23.8 
23.5 
16.2 
15.2 
29.0 

27.0 
27.0 
16.5 
13.2 
13.2 


6.7 
4.8 
4.2 
5.5 
4.1 

19.0 
26.8 
12.0 
11.2 
7.3 
6.9 


17.0 
9.6 
7.8 

15.0 

8.8 

7.3 
14.5 
8.8 
6.6 

9.8 


6.6 
6.0 
5.3 
15.0 
11.4 

8.2 
8.0 
9.8 
11.4 
7.3 
6.0 


6.9 
11.6 
9.8 
6.9 
6.0 

7.8 
7.3 
6.0 

12.8 
9.0 

10.2 


3.2 
2.7 
2.7 
4.9 
2.7 

2.7 
2.1 
1.6 
2.7 
24.0 


41.0 
39.5 
35.6 
27.5 
13.6 

18.0 
45.5 
36.2 
19.0 
29.6 
28.5 


25.0 
17.5 
9.6 
27.0 
35.0 

16.5 
10.8 
11.0 
10.2 
11.0 


36.8 


22 


42.5 


23 


28.5 


24 


28.0 


25 


20.0 


26 


25.2 


27 


27.0 


28 


24.5 


29 


27.8 


30 


13.0 


31 


12.0 







Monthly discharge of Sprechels ditch at station No. 1, near Huelo, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Runoff 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



9.2 
42.8 
44.6 
49.4 
34.4 
20.0 
25.5 
22.0 
39.5 
45.5 
46.4 
48.2 



0.7 
.2 
8.8 
13.2 
4.1 
3.6 
5.3 
3.7 
1.6 
4.9 
7.1 
7.3 



3.53 
14.20 
26.50 
27.70 
11.90 

9.89 
11.40 

9.61 

9.50 
17.30 
20.80 
21.40 



15.30 



217 

817 



1,1 

1,650 

732 

588 

701 

591 

565 

1,060 

1,240 

1,320 



11,100 



SPRECKELS DITCH AT STATION NO. 2, NEAR HUELO, MAUL 

Location. — About 7J miles by trail southeast of Huelo post office and 100 feet above 

junction of ditch with Kolea Stream No. 2. 
Records available. — November 6, 1911, to December 31, 1912. 
Gage. — Vertical staff; read once daily, about 4.30 p. m.; datum unchanged. 
Channel.— Permanent . 

Discharge measurements. — Made from log across ditch near gage. 
Accuracy. — Records good. 
Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 

Discharge measurements of Sprechels ditch at station No. 2, near Huelo, Maui, in 1912 . 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Sept. 23 
Nov. 10 


J. B. Stewart. 


Feet. 
0.69 
1.85 


Sec.Jt. 
3.04 


...do 


36.5 









ISLAND OF MAUI. 175 

Daily gage height, in feet, of Sprechels ditch at station No. 2, near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


j 


1.00 

1.28 

.98 

.93 

.90 

.85 
.83 
.85 
.90 
.83 

.78 
.75 
.73 
.71 
.71 

.70 

!68 
.65 
.63 

.62 
.60 
.60 
.89 
.70 

.62 
.60 
.59 

.58 
.57 
.65 


0.59 

.57 
.58 
.55 
.54 

.53 

.52 
.53 
.90 
.67 

.70 
.62 
1.25 
.97 
.75 

.68 

.70 

.63 

1.52 

1.93 

1.99 
1.81 
1.73 
1.31 
1.35 

2.00 
1.90 
1.88 
1.92 


1.90 
1.93 
1.92 
1.88 
1.89 

1.80 
1.93 
1.75 
1.90 
1.92 

1.98 
1.93 
1.88 
1.90 
1.65 

1.40 
1.70 
1.88 
1.93 
1.65 

1.40 
1.22 
1.38 
1.20 
1.28 

1.73 
1.28 
1.19 
1.05 
1.93 
1.90 


1.88 
1.93 
1.98 
2.18 
1.83 

1.78 
1.93 
2.10 
1.80 
1.90 

1.93 

1.90 
1.78 
1.90 
1.80 

1.93 
1.93 
1.70 
1.53 
1.93 

1.68 
1.88 
1.50 
1.30 
1.90 

1.93 

1.78 
1.43 
1.29 
1.28 


1.13 
1.15 
1.90 
1.92 
1.73 

1.53 
1.33 
1.60 
1.25 
1.13 

1.08 

1.02 

.98 

.95 

.90 

.90 

.88 
.88 
.88 
.99 

.89 
.80 
.78 
.88 
.75 

1.90 
1.60 
1.30 
1.08 
.95 
.90 


0.83 

.83 
.79 
.78 
.71 

.70 

.79 

.93 

1.09 

1.95 

1.73 
1.18 
1.30 
1.08 
1.15 

1.22 

.99 

.90 

1.20 

1.63 

1.70 
1.03 
.99 
1.29 
1.03 

.93 
1.05 
.95 
.88 
.81 


0.80 
1.50 
1.62 
1.73 
1.40 

1.13 
1.00 
1.90 
1.68 
1.22 

1.39 
1.30 
1.29 
1.53 
1.10 

1.00 
.93 

.93 
.88 
.90 

.85 

.81 

.79 

1.10 

1.13 

1.00 
1.18 
1.03 
1.28 
.91 
.85 


0.82 
.80 

.83 
.78 
.73 

.70 

.72 

.70 

. 1.13 

1.13 

1.40 
1.19 
1.33 
1.90 
1.63 

1.23 
1.05 
1.23 
1.05 
.95 

.90 
1.63 
1.00 

.90 

.85 

1.03 

1.00 
.85 
1.08 
1.05 
1.00 


1.00 
1.93 
1.70 
1.65 
1.20 

1.50 
1.80 
1.23 
1.10 
1.03 

.95 
.90 

.88 
.82 
.80 

.78 
.78 
.73 
.71 
.75 

.70 
.69 
.69 

.70 
.68 

.65 
.63 
.61 
.71 
1.35 


0.83 

1.90 

.90 

.79 

.72 

.70 
.73 
.70 
.98 
.83 

.95 
1.03 

.98 
1.80 
1.28 

1.00 
.90 

.88 
.81 
.93 

1.95 
1.90- 
1.89 
1.58 
1.25 

1.78 
1.88 
1.93 
1.60 
1.70 
1.50 


1.58 
1.30 
1.60 
1.20 
1.10 

1.03 

.98 

.91 

1.93 

1.88 

1.75 
1.30 
1.15 
1.05 
1.00 

1.95 
1.90 
2.00 
1.85 
1.90 

1.85 
1.60 
1.40 
1.23 
1.82 

1.37 
1.15 
1.10 
1.00 
1.10 


1.60 


2 


1.20 


3 


1.65 


4 


1.60 


5 


1.43 


6 


1.30 


7 


1.48 


8 


1.30 


9 


1.20 


10 


1.10 


11 


1.00 


12 


.98 




.90 


14 


1.13 


15 


.90 


16 


1.10 


17 


.90 


18 


.98 


19 


1.95 




1.30 


21 


1.93 


22 


1.93 




1.95 


24 


1.70 


25 


1.75 


26 


1.88 


27 


1.63 




1.88 


29 


1.38 




1.30 


31 


1.40 







je, in second-feet, of Sprechels ditch at station No. 2, near Huelo, Maui, 
for 1912. 



Dec. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


8.0 


1.9 


35.0 


34.2 


10.6 


4.6 


4.0 


4.4 


8.0 


4.6 


22.4 


13.6 


1.7 


36.5 


36.5 


11.0 


4.6 


20.0 


4.0 


36.5 


35.0 


14.0 


7.6 


1.8 


36.0 


39.0 


35.0 


3.9 


23.8 


4.6 


27.0 


6.0 


23.0 


6.6 


1.5 


34.2 


49.0 


36.0 


3.8 


28.2 


3.8 


25.0 


3.9 


12.0 


6.0 


1.4 


34.6 


32.2- 


28.2 


3.1 


17.0 


3.3 


12.0 


3.2 


10.0 


4.6 


1.3 


31.0 


30.2 


20.9 


3.0 


10.6 


3.0 


20.0 


3.0 


8.6 


4.6 


1.2 


36.5 


36.5 


14.9 


3.9 


8.0 


3.2 


31.0 


3.3 


7.6 


5.0 


1.3 


29.0 


45.0 


23.0 


6.6 


35.0 


3.0 


12.6 


3.0 


6.2 


6.0 


6.0 


35.0 


31.0 


13.0 


9.8 


26.2 


10.6 


10.0 


7.6 


36.5 


4.6 


2.7 


36.0 


35.0 


10.6 


37.5 


12.4 


10.6 


8.6 


4.6 


34.2 


3.8 


3.0 


39.0 


36.5 


9.6 


28.2 


16.7 


17.0 


7.0 


7.0 


29.0 


3.5 


2.2 


36.5 


35.0 


8.4 


11.6 


14.0 


11.8 


6.0 


8.6 


14.0 


3.3 


13.0 


34.2 


30.2 


7.6 


14.0 


13.8 


14.9 


5.6 


7.6 


11.0 


3.1 


7.4 


35.0 


35.0 


7.0 


9.6 


20.9 


35.0 


4.4 


31.0 


9.0 


3.1 


3.5 


25.0 


31.0 


6.0 


11.0 


10.0 


24.2 


4.0 


13.6 


8.0 


3.0 


2.8 


17.0 


36.5 


6.0 


12.4 


8.0 


12.6 


3.8 


8.0 


37.5 


2.9 


3.0 


27.0 


36.5 


5.6 


7.8 


6.6 


9.0 


3.8 


6.0 


35.0 


2.8 


2.3 


34.2 


27.0 


5.6 


6.0 


6.6 


12.6 


3.3 


5.6 


40.0 


2.5 


20.6 


36.5 


20.9 


5.6 


12.0 


5.6 


9.0 


3.1 


4.2 


33.0 


2.3 


36.5 


25.0 


36.5 


7.8 


24.2 


6.0 


7.0 


3.5 


6.6 


35.0 


2.2 


39.5 


17.0 


26.2 


5.8 


27.0 


5.0 


6.0 


3.0 


37.5 


33.0 


2.0 


31.4 


12.4 


34.2 


4.0 


8.6 


4.2 


24.2 


2.9 


35.0 


23.0 


2.0 


28.2 


16.4 


20.0 


3.8 


7.8 


3.9 


8.0 


2.9 


34.6 


17.0 


5.8 


14.3 


12.0 


14.0 


5.6 


13.8 


10.0 


6.0 


3.0 


22.4 


12.6 


3.0 


15.5 


13.6 


35.0 


3.5 


8.6 


10.6 


5.0 


2.8 


13.0 


31.8 


2.2 


40.0 


28.2 


36.5 


35.0 


6.6 


8.0 


8.6 


2.5 


30.2 


16.1 


2.0 


35.0 


13.6 


30.2 


• 23.0 


9.0 


11.6 


8.0 


2.3 


34.2 


11.0 


1.9 


34.2 


11.8 


17.9 


14.0 


7.0 


8.6 


5.0 


2.1 


36.5 


10.0 


1.8 


36.0 


9.0 


13.8 


9.6 


5.6 


13.6 


9.6 


3.1 


23.0 


8.0 


1.7 




36.5 


13.6 


7.0 


4.2 


6.2 


9.0 


15.5 


27.0 


10.0 


2.5 




35.0 




6.0 




5.0 


8.0 




20.0 





23.0 
12.0 
25.0 
23.0 
17.9 

14.0 
19.4 
14.0 
12.0 
10.0 

8.0 
7.6 
6.0 
10.6 
6.0 

10.0 

6.0 

7.6 

37.5 

14.0 

36.5 
36.5 
37.5 
27.0 
29.0 

34.2 
24.2 
34.2 
16.4 
14.0 
17.0 



176 



Monthly discharge of Spreclcels ditch at station No. 2, near Huelo, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean. 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



13.6 
40.0 
39.0 
49.0 
36.0 
37.5 
35.0 
35.0 
36.5 
37.5 
40.0 
37.5 



49.0 



1.7 

1.2 
9.0 
13.6 
3.5 
3.0 
3.9 
3.0 
2.1 
3.0 
6.2 
6.0 



1.2 



4.00 
13.40 
27.70 
31.20 
12.60 
10.20 
12.30 
9.71 
9.18 
16.00 
20.00 
19.00 



15.4 



246.0 

771.0 

1,700.0 

1,860.0 

775.0 

607.0 

756.0 

597.0 

546.0 

984.0 

1,190.0 

1,170.0 



11,200.0 



SPRECKELS DITCH AT STATION NO. 3, NEAR HTTELO, MAUI. 

Location. — About 6f miles by trail southeast of Huelo post office, and 400 feet above 

junction of ditch with Haipuaena Stream. 
Records available. — December 18, 1910, to December 31, 1912. 
Gage. — Vertical staff; read once daily, about 4.30 p. m.; datum unchanged. 
Channel. — Permanent . 

Discharge measurements. — Made from log near gage. 
Accuracy. — Record good. 
Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 

Discharge measurements of Sprechels ditch at station No. 3, near Huelo, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Sept. 23 
Nov. 10 


J. B. Stewart 


Feet. 
0.87 
2.25 


Sec.-ft. 
5.22 


do 


34.0 









Daily gage height, in feet, of Spreckels ditch at station No. 3, near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.30 
1.75 
1.33 
1.28 
1.20 

1.15 
1.13 
1.17 
1.20 
1.10 

1.05 

1.05 

1.00 

.98 

.97 

.93 
.91 

.88 
.85 
.83 


0.72 
.71 
.72 
.70 
.69 

.68 

.66 

.65 

1.20 

.87 

.91 

.81 

1.65 

1.29 

1.00 

.90 

.90 

.81 

1.98 

2.25 


2.45 
2.33 
2.30 
2.25 
2.25 

2.23 
2.33 
2.23 
2.30 
2.30 

2.73 
2.40 
2.43 
2.28 
2.15 

1.83 
2.25 
2.25 
2.33 
2.15 


2.23 
2.30 
2.45 
3.15 
2.35 

2.25 

2.40 
3.00 
2.28 
2.35 

2.35 
2.33 
2.25 

2.28 
2.25 

2.35 
2.33 
2.23 
2.05 
2.53 


1.50 
1.50 
2.23 
2.30 
1.25 

2.05 
1.78 
2.10 
1.70 
1.50 

1.40 
1.30 
1.28 
1.23 
1.15 

1.15 
1.10 
1.10 
1.10 
1.30 


1.13 
1.13 
1.08 
1.03 
.99 

.95 
1.03 
1.25 
1.43 
2.35 

2.23 
1.53 

1.78 
1.43 
1.49 

1.63 
1.30 
1.20 
1.60 
2.20 


1.43 

1.98 
2.10 
2.35 
2.08 

1.53 
1.30 
2.26 
2.23 
1.70 

2.00 
1.50 
1.73 
1.80 
1.45 

1.30 
1,28 
1.25 
1.18 
1.20 


1.10 
1.05 
1.10 
1.05 
.98 

.93 

.95 

.90 

1.50 

1.50 

1.80 
1.55 
1.75 
2.35 
2.13 

1.73 
1.40 
1.40 
1.40 
1.25 


1.33 
2.30 
2.28 
2.20 
1.68 

1.98 
2.20 
1.65 
1.50 
1.35 

1.28 
1.20 
1.13 
1.10 
1.08 

1.00 

1.00 

.98 

.95 

1.00 


1.28 
2.25 
1.20 
1.03 
.98 

.90 

.95 

.93 

1.38 

1.04 

1.05 
1.30 
1.23 
2.20 
1.70 

1.33 
1.20 
1.13 
1.10 
1.25 


2.18 
1.75 
2.13 
1.60 
1.48 

1.38 
1.30 
1.23 
2.65 
2.23 

2.20 
1.75 

1.58 
1.43 
1.30 

2.50 
2.33 
2.70 
2.30 
2.35 


1.20 


2 


2.30 


3 


2.20 


4 


2.25 


5 


1.93 


6 


1.70 


7 


1.95 


8 


1.78 


9 


1.6,8 


10 


1.50 


11 


1.38 


12 


1.30 


13 


1.25 


14 


1.50 


15 


1.98 


16 


1.48 


17 


1.23 


18 


1.35 


19 


2.43 


20 


1.80 



ISLAND OF MAUI. 



177 



Daily gage height, in feet, of Spreckels ditch at station No. 3, near Huelo, Maui, for 

1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


21 


0.81 

.80 

.80 

1.15 

.89 

.80 
.78 
.76 
.74 

.71 

.84 


2.43 
2.30 
2.20 
1.75 
1.80 

2.30 
2.35 
2.30 
2.25 


1.88 
1.60 
1.70 
1.53 
1.68 

2.20 
1.65 
1.50 
1.35 
2.28 
2.25 


2.23 
2.30 
2.00 

1.88 
2.30 

2.33 
2.25 
1.93 
1.73 
1.55 


1.13 
1.05 
1.00 
1.18 
1.00 

2.35 
2.15 
1.85 
1.48 
1.30 
1.20 


2.23 
1.38 
1.33 
1.80 
1.40 

1.23 

1.40 
1.29 
1.18 
1.10 


1.18 
1.13 
1.03 
1.50 
1.50 

1.30 
1.60 
1.33 
1.73 
1.20 
1.13 


1.20 
2.10 
1.30 
1.20 
1.18 

1.35 
1.30 
1.10 
1.40 
1.38 
1.30 


0.90 
.89 
.89 
.90 

.85^ 

.83 
.80 
.78 
.93 
1.80 


2.45 
2.25 
2.30 
2.20 
1.90 

2.28 
2.43 
2.30 
2.10 
2.20 
2.00 


2.30 
2.13 
1.93 
1.70 
2.35 

1.90 
1.55 
1.52 
1.40 
1.50 


2.40 


22 


2.35 


23 


2.40 


24 


2.20 


25 


2.23 


26 


2.30 


27 


2.15 


28 


2.35 


29 


1.90 


30 


1.80 


31 


1.70 



Daily discharge, in second-feet, of Spreckels ditch at station No. 3, near Huelo, Maui, 

for 1912. 



Day. 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 



1. 
2. 
3. 
4. 

5. 

6. 

7. 
8. 
9. 
10. 

11. 

12. 
13. 
14. 
15. 

16. 
17. 
18. 
19. 
20. 

21. 

22. 
23. 
24. 
25. 

26. 
27. 
28. 
29. 
30. 
31. 



14.0 
23.0 
14.6 
13.6 
12.0 

11.0 
10.6 
11.4 
12.0 
10.0 

9.0 
9.0 
8.0 
7.6 

7.4 

6.6 
6.2 
5.6 
5.1 

4.7 

4.4 
4.2 
4.2 
11.0 
5.8 

4.2 
3.9 
3.6 
3.3 
2.8 
4.9 



3.0 
2.8 
3.0 
2.7 
2.6 

2.5 
2.2 
2.1 
12.0 
5.5 

6.2 
4.4 
21.0 
13.8 
8.0 

6.0 

6.0 

4.4 

27.6 

33.0 

36.6 
34.0 
32.0 
23.0 
24.0 

34.0 
35.0 
34.0 
33.0 



37.0 
34.6 
34.0 
33.0 
33.0 

32.6 
34.6 
32.6 
34.0 
34.0 

42.6 
36.0 
36.6 
33.6 
31.0 

24.6 
33.0 
33.0 
34.6 
31.0 

25.6 
20.0 
22.0 
18.6 
21.6 

32.0 
21.0 
18.0 
15.0 
33.6 
33.0 



32.6 
34.0 
37.0 
51.0 
35.0 

33.0 
.36.0 
48.0 
33.6 
35.0 

35.0 
34.6 
33.0 
33.6 
33.0 

35.0 
34.6 
32.6 
29.0 
38.6 

32.6 
34.0 
28.0 
25.6 
34.0 

34.6 
33.0 
26.6 
22.6 
19.0 



18.0 
18.0 
32.6 
34.0 
13.0 

29.0 
23.6 
30.0 
22.0 
18.0 

16.0 
14.0 
13.6 
12.6 
11.0 

11.0 
10.0 
10.0 
10.0 
14.0 

10.6 
9.0 
8.0 

11.6 
8.0 

35.0 
31.0 
25.0 
17.6 
14.0 
12.0 



10.6 
10.6 



7.8 

7.0 

8.6 

13.0 

16.6 

35.0 

32.6 
18.6 
23.6 
16.6 
17.8 

20.6 
14.0 
12.0 
20.0 
32.0 

32.6 
15.6 
14.6 
24.0 
16.0 

12.6 
16.0 
13.8 
11.6 
10.0 



16.6 
27.6 
30.0 
35.0 
29.6 

18.6 
14.0 
33.0 
32.6 
22.0 

28.0 
18.0 
22.6 
24.0 
17.0 

14.0 
13.6 
13.0 
11.6 
12.0 

11.6 
10.6 
8.6 
18.0 
18.0 

14.0 
20.0 
14.6 
22.6 
12.0 
10.6 



10.0 
9.0 

10.0 
9.0 
7.6 

6.6 
7.0 
6.0 
18.0 
18.0 

24.0 
19.0 
23.0 
35.0 
30.6 

22.6 
16.0 
16.0 
16.0 
13.0 

12.0 
30.0 
14.0 
12.0 
11.6 

15.0 
14.0 
10.0 
16.0 
15.6 
14.0 



14.6 
34.0 
33.6 
32.0 
21.6 

27.6 
32.0 
21.0 
18.0 
15.0 

13.6 
12.0 
10.6 
10.0 
9.6 

8.0 
8.0 
7.6 
7.0 
8.0 

6.0 
5.8 
5.8 
6.0 
5.1 

4.7 
4.2 
3.9 
6.6 
24.0 



13.6 

33.0 

12.0 

8.6 

7.6 

6.0 
7.0 
6.6 
15.6 
8.8 

9.0 
14.0 
12.6 
32.0 
22.0 

14.6 
12.0 
10.6 
10.0 
13.0 

37.0 
33.0 
34.0 
32.0 
26.0 

33.6 
36.6 
34.0 
30.0 
32.0 
28.0 



31.6 
23.0 
30.6 
20.0 
17.6 

15.6 
14.0 
12.6 
41.0 
32.6 

32.0 
23.0 
19.6 
16.6 
14.0 

38.0 
34.6 
42.0 
34.0 
35.0 

34.0 
30.6 
26.6 
22.0 
35.0 

26.0 
19.0 
18.4 
16.0 
18.0 



12.0 
34.0 
32.0 
33.0 
26.6 

22.0 
27.0 
23.6 
21.6 
18.0 

15.6 
14.0 
13.0 
18.0 
27.6 

17.6 
12.6 
15.0 
36.6 
24.0 

36.0 
35.0 
36.0 
32.0 
32.6 

34.0 
31.0 
35.0 
26.0 
24.0 
22.0 



Monthly discharge of Spreckels ditch at station No. 


3, near Huelo, Maui, for 1912. 


Month. 


Discharge in second-feet. 


Run-off 
(total in 
acre-feet). 


Accu- 


Maximum. 


Minimum. 


Mean. 


racy. 


January 


23.0 
36.6 
42.6 
51.0 
35.0 
35.0 
35.0 
35.0 
34.0 
37.0 
42.0 
36.6 


2.8 
2.1 
15.0 
19.0 
8.0 
7.0 
8.6 
6.0 
3.9 
6.0 
12.6 
12.0 


8.18 
15.70 
30.20 
33.50 
17.50 
16.70 
19.10 
15.50 
- 13.90 
20.20 
25.80 
.25.40 


503 

903 

1,860 

1,990 

1,080 

994 

1,170 

953 

827 

1,240 

1,540 

1,560 


B. 


February 


B. 


March ■ 


A. 


April 1 . . 


A. 


May 


A. 


June 


A. 


July 


A. 


August 


A. 


September 


B. 


October 


A. 


November .^ 


A. 


December : : . . . 


A. 






The year 


51.0 


2.1 


20.10 


14,600 









14694°— wsp 336—14 12 



178 



SPRECKELS DITCH AT STATION NO. 4, NEAR HTJELO, MAUI. 



Location. — About 6£ miles by trail southeast of Huelo post office, and about 250 feet 
above junction with small tributary of Puohakamoa Stream. 

Records available. — December 18, 1910, to December 31, 1912. 

Gage. — Vertical staff; read once daily, usually between 3 and 5 p. m.; datum 
unchanged. 

Channel. — Permanent. 

Discharge measurements. — Made from log at gage. 

Accuracy. — Records good. 

Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 

Discharge measurements of Spreckels ditch at station No. 4, near Huelo, Maui, in 1912, 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Sept. 23 
Nov. 10 


J. B. Stewart 


Feet. 
0.55 
1.70 


Sec-feet. 
6.40 


do 


34.5 









Daily gage height, in feet, of Spreckels ditch at station No. 4, near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar.- 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.03 

1.28 

1.08 

1.00 

.93 

.85 
.83 
.88 
.93 
.80 

.73 
.70 
.67 
.65 
.63 

.59 
.58 
.55 
.55 

.52 

.50 
.49 
.48 
.93 
.58 

.50 
.47 
.45 
.42 
.40 
.53 


0.43 
.39 
.40 
.39 

.38 

.35 
.33 
.32 

.98 
.55 

.61 

.51 

1.38 

1.08 

.73 

.60 

.60 

.53 

1.63 

1.95 

2.10 

1.78 
1.72 
1.45 
1.50 

1.80 
2.00 
1.88 
1.80 


1.80 
1.90 
1.83 
1.78 
1.75 

1.73 
1.90 
1.73 

1.88 
1.88 

2.30- 
1.90 
1.80 
1.78 
1.68 

1.50 
1.73 

1.78 
1.88 
1.70 

1.50 
1.32 
1.45 
1.28 
1.33 

1.70 
1.33 
1.25 
1.13 
2.03 
1.85 


1.80 
1.83 
1.90 
2.15 
1.65 

1.75 
2.05 
2.03 
1.85 
1.80 

1.70 
1.80 
1.70 
1.73 
1.70 

1.83 
1.78 
1.70 
1.60 
1.90 

1.70 
1.75 
1.58 
1.50 
1.75 

1.80 
1.70 
1.53 
1.40 
1.30 


1.23 
1.23 
1.63 
1.73 
1.70 

1.60 
1.45 
1.63 
1.33 
1.20 

1.10 

1.03 

1.00 

.93 

.88 

.85 
.80 
.80 
.80 
1.00 

.83 
.70 
.65 
.89 
.68 

1.80 
1.68 
1.50 
1.20 
1.03 
.93 


0.85 
.85 
.78 
.68 
.65 

.62 

.68 

.95 

1.13 

1.90 

1.78 
1.30 
1.45 
1.15 
1.23 

1.30 
1.03 
.93 
1.30 
1.60 

1.73 
1.10 
1.08 
1.48 
1.13 

1.00 
1.13 
1.03 
.90 
.80 


1.15 
1.58 
1.70 
1.75 
1.60 

1.25 
1.08 
1.83 
1.73 
1.35 

1.53 
1.20 
1.43 
1.48 
1.20 

1.10 

1.00 

.98 

.90 

.90 

.88 

.82 

.75 

1.23 

1.23 

1.03 
1.23 
1.05 
1.38 
.95 
.83 


0.75 

.70 
.80 
.68 
.63 

.60 
.60 
.58 
1.23 
1.23 

1.50 
1.30 
1.45 
1.88 
1.70 

1.38 
1.13 
1.10 
1.13 
.98 

.90 
1.65 
1.08 
.90 
.85 

1.03 
1.08 
.80 
1.15 
1.10 
1.05 


1.05 
1.90 
1.75 
1.73 
1.33 

1.58 
1.75 
1.33 
1.20 
1.08 

1.00 
.93 
.88 
.80 
.75 

.70 
.70 
.65 
.63 
.65 

.60 
.58 
.53 
.60 
.52 

.50 
.49 
.45 
.58 
1.50 


1.05 

1.90 

1.40 

.78 

.70 

.60 
.65 
.63 
.93 
.80 

.70 
1.05 
1.03 
1.73 
1.40 

1.10 
.95 
.85 
.80 

1.00 

1.88 
1.83 
1.80 
1.70 
1.40 

1.75 
1.98 
1.80 
1.53 
1.75 
1.83 


1.50 
1.43 
1.63 
1.30 
1.18 

1.10 
1.03 
.98 
2.10 
1.70 

1.70 
1.40 
1.30 
1.23 
1.08 

1.90 
1.83 
2.10 
1.70 
1.85 

1.70 
1.68 
1.50 
1.35 
1.67 

1.47 
1.25 
1.20 
1.10 
1.17 


1.60 


2 


1.45 


3 


1.55 


4 


1.58 


5. 


1.50 


6 


1.30 


7 


1.55 


8 


1.38 


9 


1.30 


10 


1.20 


11 


1.08 


12 


1.05 


13 


.98 


14.... 


1.20 


15 


.98 


16 


1.23 


17 


.95 


18 


1.03 


19 


1.93 


20 


1.43 


21 


1.83 


22 


1.80 


23 


1.90 


24 


1.55 


25 


1.53 


26 


1.83 


27... 


1.55 


28 


1.63 


29 


1.43 


30 


1.40 


31 


1.33 







ISLAND OF MAUI. 



179 



Daily discharge, in second-feet, of Spreckels ditch at station No. 4, near Euelo, Maui, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


16.2 
22.5 
17.5 
15.5 
13.8 

12.0 
11.6 
12.6 
13.8 
11.0 

9.6 
9.0 
8.4 
8.0 
7.6 

6.8 
6.6 
6.0 
6.0 
5.4 

5.0 
4.8 
4.7 
13.8 
6.6 

5.0 
4.6 
4.2 
3.8 
3.5 
5.6 


4.0 
3.4 
3.5 
3.4 
3.2 

2.8 
2.4 
2.3 
15.0 
6.0 

7.2 
5.2 
25.0 
17.5 
9.6 

7.0 

7.0 

5.6 

31.9 

41.5 

46.0 
36.4 
34.6 
26.8 
28.0 

37.0 
43.0 
39.4 
37.0 


37.0 
40.0 
37.9 
36.4 
35.5 

34.9 
40.0 
34.9 
39.4 
39.4 

52.0 
40.0 
37.0 
36.4 
33.4 

28.0 
34.9 
36.4 
39.4 
34.0 

28.0 
23.5 
26.8 
22.5 
23.8 

34.0 
23.8 
21.8 
18.8 
43.9 
38.5 


37.0 
37.9 
40.0 
47.5 
32.5 

35.5 

44.5 
43.9 
38.5 
37.0 

34.0 
37.0 
34.0 
34.9 
34.0 

37.9 
36.4 
34.0 
31.0 
40.0 

34.0 
35.5 
30.4 
28.0 
35.5 

37.0 
34.0 
28.9 
25.5 
23.0 


21.2 
21.2 
31.9 
34.9 
34.0 

31.0 
26.8 
31.9 
23.8 
20.5 

18.0 
16.2 
15.5 
13.8 
12.6 

12.0 
11.0 
11.0 
11.0 
15.5 

11.6 
9.0 
8.0 

12.8 
8.6 

37.0 

33.4 
28.0 
20.5 
16.2 
13.8 


12.0 
12.0 
10.6 
8.6 
8.0 

7.4 
8.6 
14.2 
18.8 
40.0 

36.4 
23.0 
26.8 
19.2 
21.2 

23.0 
16.2 
13.8 
23.0 
31.0 

34.9 

18.0 
17.5 
27.5 
18.8 

15.5 
18.8 
16.2 
13.0 
11.0 


19.2 
30.4 
34.0 
35.5 
31.0 

21.8 
17.5 
37.9 
34.9 
24.2 

28.9 
20.5 
26.2 
27.5 
20.5 

18.0 
15.5 
15.0 
13.0 
13.0 

12.6 
11.4 
10.0 
21.2 
21.2 

16.2 
21.2 
16.8 
25.0 
14.2 
11.6 


10.0 
9.0 
11.0 

8.6 
7.6 

' 7.0 
7.0 
6.6 
21.2 
21.2 

28.0 
23.0 
26.8 
39.4 
34.0 

25.0 

18.8 
18.0 
18.8 
15.0 

13.0 

32.5 
17.5 
13.0 
12.0 

16.2 
17.5 
11.0 
19.2 
18.0 
16.8 


16.8 
40.0 
35.5 
34.9 
23.8 

30.4 
35.5 
23.8 
20.5 
17.5 

15.5 
13.8 
12.6 
11.0 
10.0 

9.0 
9.0 
8.0 
7.6 
8.0 

7.0 
6.6 
5.6 
7.0 
5.4 

5.0 
4.8 
4.2 
6.6 
28.0 


16.8 
40.0 
25.5 
10.6 
9.0 

7.0 
8.0 
7.6 
13.8 
11.0 

9.0 
16.8 
16.2 
34.9 
25.5 

18.0 
14.2 
12.0 
11.0 
15.5 

39.4 
37.9 
37.0 
34.0 
25.5 

35.5 

42.4 
37.0 
28.9 
35.5 
37.9 


28.0 
26.2 
31.9 
23.0 
20.0 

18.0 
16.2 
15.0 
46.0 
34.0 

34.0 
25.5 
23.0 
21.2 
17.5 

40.0 
37.9 
46.0 
34.0 
38.5 

34.0 
33.4 
28.0 
24.2 
33.1 

27.2 

21.8 
20.5 
18.0 
19.8 


31.0 


2 


26.8 


3 


29.5 


4 


30.4 


5 


28.0 


6 


23.0 


7 


29.5 


8 


25.0 


9 


23.0 


10 


20.5 


11 _ 


17.5 


12 


16.8 


13 


15.0 




20.5 


15 


15.0 


16 


21.2 


17 


14.2 


18 


16.2 




40.9 


20. 


26.2 


21 


37.9 


22 


37.0 


23.. 


40.0 




29.5 


25 


28.9 


26 


37.9 




29.5 


28 


31.9 




26.2 


30 


25.5 


31 


23.8 







Monthly discharge of Spreckels ditch at station No. 4, near Huelo, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. 



Minimum. 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



22.5 
46.0 
52.0 
47.5 
37.0 
40.0 
35.5 
39.4 
40.0 
42.4 
46.0 
40.9 



52.0 



3.5 

2.3 

18.8 

23.0 

8.0 

7.4 

10.0 

6.6 

4.2 

7.0 

15.0 

14.2 



18.30 
33.90 
35.30 
19.80 
18.80 
21.50 
17.50 
15.40 
23.00 
27.90 
26.40 



2.3 



22.20 



558 
1,050 
2,080 
2,100 
1,220 
1,120 
1,320 
1,080 

916 
1,410 
1,660 
1,620 



16,100 



SPRECKELS DITCH AT STATION NO. 5, NEAR HTTELO, MAUI. 

Location. — About 5 miles by trail southeast of Huelo post office, and about 500 feet 

above drop into Alo Stream. 
Records available. — November 6, 1911, to December 31, 1912. 
Gage. — Vertical staff; read twice daily, about 6 a. m. and 6 p.m.; datum unchanged. 
Channel. — Permanent. 

Discharge measurements. — Made from plank at gage. 
Accuracy. — Very good. 
Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 



180 

Discharge measurements of Spreckels ditch at station No. 5, near Huelo, Maui, in 1912. 



Date. 


' Hydrographer. 


Gage, 
height. 


Dis- 
charge. 


Sept. 22 
Nov. 7 


J. B. Stewart 


Feet. 
0.67 
1.35 
2.16 


Sec.-ft. 
11.9 


do 


26.3 


Dec. 20 


C. T. Bailey 


49.1 









Daily gage 



in feet, of Spreckels ditch at station No. 5, near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.54 
1.74 
1.44 
1.27 
1.15 

1.11 
1.07 
1.19 
1.23 
1.03 

.92 

.86 
.82 

.78 
.74 

.71 
.68 
.66 
.62 
.60 

.59 
.58 
.54 
.94 
.74 

.57 
.51 

.48 
.46 
.44 
.52 


0.48 

.41 
.45 
.44 
.40 

.38 

.36 

1.18 

1.76 

.66 

.62 
^60 
2.14 
1.76 

.90 

.68 

.64 

.58 

1.96 

2.48 

2.45 
2.43 
2.41 
2.20 
2.18 

1.90 
1.82 
2.30 
2.14 


2.35 
2.34 
2.35 
2.22 
2.20 

2.22 
2.29 
2.28 
2.35 
2.40 

2.50 

2.49 
2.52 
2.38 
2.24 

2.18 
2.19 
2.38 
2.28 
2.22 

2.24 
1.96 
1.92 
1.86 
1.83 

2.28 
1.94 
1.80 
1.54 
2.22 
2.33 


2.24 
2.19 
2.40 
2.50 
1.92 

2.36 
2.53 
2.44 
2.22 
2.34 

2.28 
2.38 
2.28 
2.40 
2.42 

2.38 
2.29 
2.26 
2.26 
2.46 

2.28 
2.30 
2.29 
2.28 
2.33 

2.46 
2.38 
2.30 
2.12 
1.98 


1.68 
1.82 
2.42 
2.40 
2.44 

2.36 
2.04 
2.30 
1.90 
1.64 

1.48 
1.34 
1.25 
1.26 
1.08 

1.02 

.97 

.96 

1.02 

1.36 

1.10 

.84 

.77 

1.00 

.80 

1.73 
2.36 
1.97 
1.96 
1.34 
1.26 


1.04 
1.00 

.82 
.83 

.74 

.70 

.76 

1.18 

1.10 

1.90 

2.24 
1.76 
2.06 
1.54 
1.90 

1.90 
1.38 
1.18 
1.72 
1.68 

2.06 

1.48 
1.25 
2.18 
1.47 

1.24 
1.62 
1.40 
1.08 
.94 


1.23 
1.65 
2.00 
2.23 
2.04 

1.64 
1.40 
1.30 
2.30 
2.00 

2.10 
1.71 
2.07 
2.16 
1.71 

1.41 
1.27 
1.25 
1.09 
1.05 

1.11 

1.02 

.87 
1.88 
1.59 

1.27 
1.38 
1.41 
1.60 
1.13 
1.00 


0.90 

.85 
.86 
.79 
.71 

.66 

.71 

.66 

1.75 

1159 

2.16 
1.97 
1.80 
1.97 
2.30 

2.01 
1.53 
1.51 
1.60 
1.23 

1.10 
2.10 
1.46 
1.11 
.98 

1.12 
1.16 

.98 
1.80 
1.42 

1.57 


1.45 
2.40 
2.16 
2.20 
1.92 

2.02 

1.85 
1.93 
1.64 
1.43 

1.28 

1.16 

1.03 

.99 

.91 

.85 
.86 
.78 
.72 

.74 

.70 
.66 
.62 
.71 
.59 

.59 
.56 
.50 
.62 
2.15 


1.23 
1.64 
1.62 

.88 
.80 

.72 
.73 
.72 
.96 
.96 

1.11 
1.54 
1.45 
2.36 
2.15 

1.46 
1.18 
1.22 
.56 
1.13 

2.48 
2.46 
2.39 
2.29 
2.10 

2.10 
2.50 
2.50 
2.30 
2.40 
2.16 


2.30 
2.18 
2.34 
1.96 
1.72 

1.54 
1.37 
1,-30 
2.96 
2.34 

2.34 
2.16 

1.98 
1.66 
1.46 

2.42 
2.40 
2.44 
2.34 
2.29 

2.22 
2.25 
1.80 
2.04 
2.10 

2.14 
1.83 
1.72 
1.44 
1.55 


2.42 


2 


1.48 


3 


2.90 


4 


.76 


5 


.45 


6 


.44 


7 


1.27 


g 


1.22 


9 


1.18 


10 


.92 


11 


1.45 


12 


1.10 


13 


1.28 


14 


1.44 


15 


1.38 


16 


1.65 


17 


1.28 


18 


2.12 


19 


2.40 


20 


2.18 


21 


2.32 


22 


2.42 


23 


2.52 


24 


2.23 


25 


2.26 


26 


2.35 


27 


2.31 


28 


2.30 


29 


2.16 


30 


2.12 


31 


1.91 







Daily discharge, in second-feet, of Spreckels ditch at station No. 5, near Huelo, Maui, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


31.0 
36.0 
28.5 
24.2 
21.2 

20.2 
19.4 
22.2 
23.2 
18.6 

16.4 
15.2 
14.4 
13.6 
12.8 


8.7 
7.6 
8.2 
8.1 
7.5 

7.2 

6.9 

22.0 

36.5 

11.4 

10.8 
10.5 
47.2 
36.5 
16.0 


53.5 
53.2 
53.5 
49.6 
49.0 

49.6 
51.7 
51.4 
53.5 
55.0 

58.0 
57.7 
58.6 
54.4 
50-2 


50.2 
48.7 
55.0 
58.0 
40.6 

53.8 
58.9 
56.2 
49.6 
53.2 

51.4 
54.4 
51.4 
55.0 
55.6 


34.5 
38.0 
55.6 
55.0 
56.2 

53.8 
44.2 
52.0 
40.0 
33.5 

29.5 
26.0 
23.8 
24.0 
19.6 


18.8 
18.0 
14.4 
14.6 
12.8 

12.0 
13.2 
22.0 
20.0 
40.0 

50.2 
36.5 
44.8 
31.0 
40.0 


23.2 
33.8 
43.0 
49.9 
44.2 

33.5 
27.5 
25.0 
52.0 
43.0 

46.0 

35.2 
45.1 
47.8 
35.2 


16.0 
15.0 
15.2 
13.8 
12.2 

11.4 
12.2 
11.4 
36.2 
32.2 

47.8 
42.1 
37.5 
42.1 
52.0 


28.8 
55.0 
47.8 
49.0 
40.6 

43.6 

38.8 
40.9 
33.5 
28.2 

24.5 
21.5 
18.6 
17.8 
16.2 


23.2 
33.5 
33.0 
15.6 
14.0 

12.4 
12.6 
12.4 
17.2 
17.2 

20.2 
31.0 

28.8 
53.8 
47.5 


52.0 

48.4 
53.2 
41.8 
35.5 

31.0 
26.8 
25.0 
72.8 
53.2 

53.2 

47.8 
42.4 
34.0 
29.0 


55.6 


2 


29.5 


3 


71.0 


4 


13.2 


5 


8.2 


6 


8.1 


7 


24.2 


8 


23.0 


9 


22.0 


10 


16.4 


11 


28.8 


12 


20.0 


13 


24.5 


14 


28.5 


15 


27.0 



ISLAND OF MAUI. 



181 



Daily discharge, in second-feet, of Spreckels ditch at station No. 5, near Huelo, Maui, 

for 1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 


12.2 
11.7 
11.4 
10.8 
10.5 

10.4 
10.2 
9.6 
16.8 
12.8 

10.0 
9.2 

8.7 
8.4 
8.1 
9.3 


11.7 
11.1 

10.2 
41.8 
57.4 

56.5 
55.9 
55.3 
49.0 

48.4 

40.0 
38.0 
52.0 

47.2 


48.4 
48.7 
54.4 
51.4 
49.6 

50.2 
41.8 
40.6 
39.0 
38.2 

51.4 
41.2 
37.5 
31.0 
49.6 
52.9 


54.4 
51.7 
50.8 
50.8 
56.8 

51.4 
52.0 
51.7 
51.4 
52.9 

56.8 
54.4 
52.0 
46.6 
42.4 


18.4 
17.4 
17.2 
18.4 
26.5 

20.0 
14.8 
13.4 
18.0 
14.0 

35.8 
53.8 
42.1 
41.8 
26.0 
24.0 


40.0 
27.0 
22.0 
35.5 
34.5 

44.8 
29.5 
23.8 
4S.4 
29.2 

23.5 
33.0 
27.5 
19.6 
16.8 


27.8 
24.2 
23.8 
19.8 
19.0 

20.2 
18.4 
15.4 
39.5 
32.2 

24.2 
27.0 
27.8 
32.5 
20.8 
18.0 


43.3 
30.8 
30.2 
32.5 
23.2 

20.0 
46.0 
29.0 
20.2 
17.6 

20.5 
21.5 
17.6 
37.5 
28.0 
31.8 


15.0 
15.2 
13.6 
12.4 
12.8 

12.0 
11.4 
10.8 
12.2 
10.4 

10.4 
9.9 
9.0 

10.8 
47.5 


29.0 
22.0 
23.0 
9.9 
20.8 

57.4 
56.8 
54.7 
51.7 
46.0 

46.0 

58.0 
58.0 
52.0 
55.0 
47.8 


55.6 
55.0 
56.2 
53.2 
51.7 

49.6 
50.5 
37.5 

44.2 
46.0 

47.2 
38.2 
35.5 
28.5 
31.2 


33.8 


17 


24.5 


18 


46.6 


19 .". 


55.0 


20 


48.4 


21 


52.6 


22 


55.6 


23 


58.6 


24 


49.9 


25 


50.8 


26 


53.5 


27 


52.3 


28 


52.0 


29 


47.8 




46.6 


31 


40.3 







Monthly discharge ofSpreckels ditch at station No. 5, near Huelo, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean. 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July... 

August 

September 

October 

November..... 
December 

The year 



36.0 
57.4 
58.6 
58.9 
56.2 
50.2 
52.0 
52.0 
55.0 
58.0 
72.8 
71.0 



72.1 



31.0 

42.4 

13.4 

12.0 

15.4 

11.4 

9.0 

9.9 

25.0 

8.1 



15.7 
28.3 
49.2 
52.3 
31.8 
28.1 
31.5 
27.3 
23.9 
34.2 
44.2 
37.7 



33.7 



965 
1,630 
3,030 
3,110 
1,960 
1,670 
1,940 
1,680 
1,420 
2,100 
2,630 
2,320 



24,500 



SPRECKELS DITCH AT STATION NO. 6, NEAR HTTELO, MAUI. 

Location. — About 4 miles by trail southeast of Huelo post office and about 100 feet 

below Kolea Stream intake. 
Records available. — November 4, 1911, to December 31, 1912. 
Gage. — Vertical staff; read once daily, usually about 4 p. m.; datum unchanged. 
Discharge measurements. — Made from log at gage. 
Channel. — Permanent . 
Accuracy. — Records good. 
Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 



Discharge measurements of JSprechels ditch at station No. 6 near Huelo, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Sept. 22 


J. B . Stewart 


Feet. 
0.92 
1.49 
1.19 


Sec. -ft 
21.4 


Nov. 7 


do 


49.0 


Dec. 20 


C. T. Bailey 


38.8 









182 WATER RESOURCES OP HAWAII, 1912. 

Daily gage height, in feet, of JSpreckels ditch at station No. 6, near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.46 

1.47 
1.45 
1.45 
1.42 

1.40 
1.40 
1.40 
1.40 
1.38 

1.20 

1.17 
1.10 
1.07 
1.01 

.99 
.97 
.95 
.90 

.88 

.80 

.78 

.74 

1.34 

1.00 

.76 
.72 
.70 
.68 
.64 
.65 


0.65 
.61 
.70 
.65 
.61 

.58 

.55 

1.20 

1.42 

.80 

.99 

.83 

1.41 

1.53 

1.10 

.90 

.85 

.79 

1.62 

1.48 

1.34 
1.30 
1.45 
1.43 
1.43 

1.44 
1.48 
1.45 
1.42 


1.42 
1.44 
1.43 
1.43 
1.42 

1.42 
1.42 
1.42 
1.43 
1.44 

1.49 
1.50 
1.48 
1.43 
1.52 

1.52 
1.53 
1.21 
1.30 
1.59 

1.58 
1.57 
1.57 
1.56 
1.55 

1.60 
1.58 
1.45 
1.44 
1.53 
1.52 


1.59 
1.59 
1.62 
1.68 
1.42 

1.42 
1.40 
1.43 
1.50 
1.50 

1.49 
1.52 
1.52 
1.52 
1.50 

1.50 
1.49 
1.48 
1.48 
1.50 

1.49 
1.49 
1.48 
1.50 
1.50 

1.51 
1.50 
1.50 
1.49 
1.48 


1.50 
1.50 
1.51 
1.55 
1.53 

1.51 
1.54 
1.60 
1.59 
1.59 

1.58 
1.58 
1.57 
1.55 
1.50 

1.38 
1.34 
1.26 
1.34 
1.61 

1.33 
1.12 
1.08 
1.32 
1.13 

1.60 
1.60 
1.62 
1.60 
1.50 
1.41 


1.35 
1.31 
1.20 
1.10 
1.00 

.92 
1.00 
1.39 
1.41 
1.45 

1.55 
1.51 
1.50 
1.49 
1.40 

1.49 
1.48 
1.31 
1.50 
1.45 

1.50 
1.50 
1.45 
1.60 
1.50 

1.44 
1.52 
1.42 
1.29 
1.15 


1.45 
1.55 
1.60 
1.55 
1.55 

1.45 
1.45 
1.54 
1.55 
1.55 

1.56 
1.55 
1.55 
1.59 
1.56 

1.55 
1.50 
1.38 
1.25 
1.22 

1.21 
1.12 
1.03 
1.50 
1.55 

1.40 
1.55 
1.48 
1.55 
1.29 
1.18 


1.00 
.98 

1.12 
.93 
.90 

.85 

.90- 

.81 

1.54 

1.54 

1.52 
1.52 
1.51 
1.56 
1.54 

1.51 
1.49 
1.46 
1.46 
1.40 

1.31 
1.50 
1.49 
1.30 
1.18 

1.45 
1.40 
1.10 
1.50 
1.45 
1.45 


1.46 
1.50 
1.50 
1.50 
1.50 

1.52 
1.55 
1.51 
1.50 
1.50 

1.48 
1.45 
1.39 
1.27 
1.19 

1.10 
1.10 
1.02 
1.00 
1.04 

.95 

.89 
.85 
.82 
.78 

.77 
74 
.69 
.70 
1.50 


1.48 
1.50 
1.47 
1.48 
.97 

.90 

.93 

.90 

1.43 

1.10 

.90 
1.39 
1.42 
1.57 
1.50 

1.58 
1.38 
1.27 
1.00 
1.31 

1.60 
1.60 
1.60 
1.54 
1.53 

1.55 
1.60 
1.60 
1.58 
1.59 
1.48 


1.58 
1.59 
1.59 
1.58 
1.52 

1.50 
1.49 
1.50 
1.50 
1.60 

1.58 
1.53 
1.50 
1.50 
1.55 

1.58 
1.58 
1.60 
1.59 
1.58 

1.60 
1.60 
1.59 
1.59 
1.60 

1.59 
1.59 
1.59 
1.58 
1.60 


1.60 


2 


.75 


3 


.27 


4 


.22 


5 


.25 


6 


.29 


7... 


.22 


8 


.15 


9 


.14 


10 


.13 


11 


.40 


12 


.82 


13 


.89 


14 


.55 


15 


.54 


16 


.90 


17 


.89 


18.. 


.90 


19 


1.00 


20 


1.19 


21. 


1.29 


22 


1.24 


23 


1.30 


24 


1.22 


25 


1.21 


26 


1.27 


27 


1.25 


28 


1.25 


29 


1.23 


30 


1.22 


31 


1.21 







Daily discharge, in second-feet, of Sprechels ditch at station No. 6, near Huelo, Maui, 

for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1. 
2 
3. 
4 
5, 

6 

7 

8, 

9 

10 

11 
12 
13 
14 
15 

16 
17 

18 
19 
20 

21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



48.0 
48.5 
47.5 
47.5 
46.0 

45.0 
45.0 
45.0 
45.0 
44.0 

35.0 
33.8 
31.0 
29.8 
27.4 

26.7 
26.1 
25.5 
24.0 
23.4 

21.0 
20.4 
19.2 
42.0 
27.0 

19.8 
18.6 
18.0 
17.4 
16.2 
16.5 



16.5 
15.3 
18.0 
16.5 
15.3 

14.5 

13.8 
35.0 
46.0 
21.0 

26.7 
21.9 
45.5 
51.5 
31.0 

24.0 
22.5 
20.7 
56.0 
49.0 

42.0 
40.0 
47.5 
46.5 
46.5 

47.0 
49.0 
47.5 
46.0 



46.0 
47.0 
46.5 
46.5 
46.0 

46.0 
46.0 
46.0 
46.5 
47.0 

49.5 
50.0 
49.0 
46.5 
51.0 

51.0 
51.5 
35.5 
40.0 
54.5 

54.0 
53.5 
53.5 
53.0 
52.5 

55.0 
54.0 
47.5 
•47.0 
51.5 
51.0 



54.5 
54.5 
56.0 
59.0 
46.0 

46.0 
45.0 
46.5 
50.0 
50.0 

49.5 
51.0 
51.0 
51.0 
50.0 

50.0 
49.5 
49.0 
49.0 
50.0 

49.5 
49.5 
49.0 
50.0 
50.0 

50.5 
50.0 
50.0 
49.5 
49.0 



50.0 
50.0 
50.5 
52.5 
51.5 

50.5 
52.0 
55.0 
54.5 
54.5 

54.0 
54.0 
53.5 
52.5 
50.0 

44.0 
42.0 
38.0 
42.0 
55.5 

41.5 
31.8 
30.2 
41.0 
32.2 

55.0 
55.0 
56.0 
55.0 
50.0 
45.5 



42.5 
40.5 
35.0 
31.0 
27.0 

24.6 
27.0 
44.5 
45.5 
47.5 

52.5 
50.5 
50.0 
49.5 
45.0 

49.5 
49.0 
40.5 
50.0 
47.5 

50.0 
50.0 
47.5 
55.0 
50.0 

47.0 
51.0 
46.0 
39.5 
33.0 



47.5 
52.5 
55.0 
52.5 
52.5 

47.5 
47.5 
52.0 
52.5 
52.5 

53.0 
52.5 
52.5 
54.5 
53.0 

52.5 
50.0 
44.0 
37.5 
36.0 

35.5 
31.8 
28.2 
50.0 
52.5 

45.0 
52.5 
49.0 
52.5 
39.5 
34.2 



27.0 
26.4 
31.8 
24.9 
24.0 

22.5 
24.0 
21.3 
52.0 
52.0 

51.0 
51.0 
50.5 
53.0 
52.0 

50.5 
49.5 
48.0 
48.0 
45.0 

40.5 
50.0 
49.5 
40.0 
34.2 

47.5 
45.0 
31.0 
50.0 
47.5 
47.5 



48.0 
50.0 
50.0 
50.0 
50.0 

51.0 
52.5 
50.5 
50.0 
50.0 

49.0 
47.5 
44.5 
38.5 
34.6 

31.0 
31.0 

27.8 
27.0 
28.6 

25.5 
23.7 
22.5 
21.6 
20.4 

20.1 
19.2 
17.7 
18.0 
50.0 



49.0 
50.0 
48.5 
49.0 
26.1 

24.0 
24.9 
24.0 
46.5 
31.0 

24.0 
44.5 
46.0 
53.5 
50.0 

54.0 
44.0 
38.5 
27.0 
40.5 

55.0 
55.0 
55.0 
52.0 
51.5 

52.5 
55.0 
55.0 
54.0 
54.5 
49.0 



54.0 
54.5 
54.5 
54.0 
51.0 

50.0 
49.5 
50.0 
50.0 
55.0 

54.0 
51.5 
50.0 
50.0 
52.5 

54.0 
54.0 
55.0 
54.5 
54.0 

55.0 
55.0 
54.5 
54.5 
55.0 

54.5 
54.5 
54.5 
54.0 
55.0 



55.0 
19.5 
7.4 
6.4 
7.0 

7.8 
6.4 
5.5 
5.4 
5.3 

10.0 
21.6 
23.7 
13.8 
13.5 

24.0 
23.7 
24.0 
27.0 
34.6 

39.5 
37.0 
40.0 
36.0 
35.5 

38.5 
37.5 
37.5 
36.5 
36.0 
35.5 



ISLAND OF MAUI. 183 

Monthly discharge of Spreckels ditch at station No. 6, near Huelo, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



48.5 
56.0 
55.0 
59.0 
56.0 
55.0 
55.0 
53.0 
52.5 
55.0 
55.0 
55.0 



59.0 



16.2 
13.8 
35.5 
45.0 
30.2 
24.6 
28.2 
21.3 
17.7 
24.0 
49.5 
5.3 



5.3 



31.6 
33.5 
48.9 
50.2 
48.4 
43.9 
47.4 
41.5 
36.7 
44.6 
53.3 
24.2 



42.0 



1,940 
1,930 
3,010 
2,990 
2,980 
2,610 
2,910 
2,550 
2,180 
2,740 
3,170 
1,490 



30,500 



SPRECKELS DITCH AT STATION NO. 7, NEAR HUELO, MATJT. 

Location. — About If miles by trail east of Huelo post office, between Oopuola and 

Pa streams. ' 
Records available.— November 6, 1911, to December 31, 1912. 
Gage. — Vertical staff; read once daily, at irregular hours; datum unchanged. 
Channel. — Permanent . 

Discharge measurements. — Made from log at gage. 
Accuracy. — Fair . 
Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 

Discharge measurements of Spreckels ditch at station No. 7 near Huelo, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Sept. 22 
Nov. 8 


J . B . Stewart 


Feet. 
1.15 
1.85 
1.45 


Sec-ft. 
23.8 


...do 


54.6 


Dec. 21 


C. T. Bailey 


35.6 









Daily gage height, in feet, of Spreckels ditch at station No. 7, near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 






1.80 
1.95 


1.65 
1.75 
1.80 
1.90 
1.80 

1.80 

"i.'so" 

1.75 
1.80 

1.80 
1.80 
1.80 

*"i.'85" 

1.85- 


1.60 
1.70 
1.65 
1.80 

1.70 
1.70 

"2. 20* 

1.70 

"1.65* 

1.65 
1.60 

1.55 
1.50 
1.45 

"i.'65* 


1.60 

"T 55* 
1.35 
1.35 

1.30 
1.20 
1.40 

"i.'so" 

1.70 
1.70 
1.70 
1.70 
1.70 

"i.*65" 
1.60 
1.85 
1.60 


1.60 
1.75 
1.60 


1.30 
1.25 
1.30 


"l95* 
1.90 
1.85 
1.85 

1.70 
1.80 

*"i.*65" 
1.60 

1.60 
1.60 
1.55 
1.55 

1.50 
1.45 
1.55 
1.20 
1.20 


1.80 
1.90 
1.70 
1.40 
1.30 

"i."30" 
1.12 
1.40 
1.32 

1.20 
1.90 

"i.'ro" 

1.90 

1.70 
1.60 
1.60 
1.50 


1.80 
1.80 

"i.'so" 

1.70 
1.70 
1.70 
2.00 

1.75 
1.70 
1.65 
1.65 
1.60 

1.75 

"i*90" 
1.90 
1.90 




2 






2.00 


3 


1.10 
1.10 
1.05 

1.10 




1.60 


4 




1.75 
1.75 

1.75 
1.75 
1.75 
1.80 


1.50 


5 


"i.'60" 
1.80 
1.70 

1.75 
1.75 
1.60 

"*L65* 

1.60 
1.55 
1.50 
1.50 
L 1.50 


1.20 

1.05 
1.20 
1.05 
1.80 
1.75 

"i.'so" 

1.85 
1.80 
1.70 

1.80 
1.70 

"i.'so" 

1.60 


.70 


6 


.70 


7. 


.80 


8.. 








9 


1.10 
1.00 

.95 
.95 
.95 




.45 


10 


.45 


11 




1.85 
1.85 
1.85 
1.85 
1.80 

1.80 


.35 


12 


.35 


13 


.40 


14 


.40 


15 


.95 

.90 
.95 
.95 
.95 
1.00 


"i.'is" 

"i.'40* 
2.25 


.50 


16 




17 


.50 


18 


1.85 
1.75 
1.75 


*"i."75" 
1.80 


.55 


19 


1.60 


20.... 


1.30 



184 



WATEB KESOUBCES OF HAWAII, 1912. 



Daily gage height, in feet, of Sprechels ditch at station No. 7, near Huelo, Maui, for 

1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dee. 


21... 




2.00 
1.95 
1.85 
1.80 


1.70 
1.65 
1.05 

"i."7o" 

1.75 

"'i."65" 
1.70 
1.75 


"i."7o' 

1.70 
1.70 
1.75 

1.80 
1.80 

"i."75" 


1.60 
1.45 
1.40 
1.65 
1.40 

"Do" 

1.80 
1.75 
1.65 
1.60 


1.85 
1.65 

"i.*95" 
1.65 

1.65 
1.60 
1.65 
1.50 


"T40* 
1.40 
1.70 
1.75 

1.60 
1.70 

""i.*65" 
1.60 
1.35 


1.55 
1.80 
1.75 
1.60 

1.40 
1.55 
1.50 
1.60 
1.55 
1.55 


1.20 

""i.'io" 

1.10 
1.05 

1.10 
1.00 
1.00 

"i'.Yo 


1.70 
1.90 
1.90 
1.80 
1.80 

1.70 

"T96" 
l.S'O 
1.80 


1.95 

1.85 
1.85 

"2. 46' 

2.40 
1.80 
1.70 
1.70 
1.70 


1.25 


22 


1.00 
.95 




23 


1.25 


24 


1.73 


25 






26 




1.65 
1.90 
1.85 
1.85 


1.50 


27 




1.50 


28 




1.22 


29 






30 




.72 


31 






.70 





















Daily discharge, in second-feet, of Sprechels ditch at station No. 7, near Huelo, Maui, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


23.0 
23.0 
23.0 
23.0 
21.5 

23.0 
23.0 
23.0 
23.0 
20.0 

18.5 
18.5 
18.5 
18.5 
18.5 

17.0 
18.5 
18.5 
18.5 
20.0 

20.0 
20.0 
18.5 


"25.6" 

30.0 
35.0 
77.0 

62.0 
59.5 
54.5 
52. 
48.5 

45.0 
57.0 
54.5 
54.5 


52.0 
59.5 
54.5 
49.5 
49.5 

49.5 
49.5 
49.5 
52.0 
53.2 

54.5 
54.5 
54.5 
54.5 
52.0 

52.0 
53.2 
54.5 
49.5 
49.5 

47.0 
45.0 
21.5 
34.3 
47.0 

49.5 

47.2 
45.0 
47.0 
49.5 
47.2 


45.0 
49.5 
52.0 
57.0 
52.0 

52.0 
52.0 
52.0 
49.5 
52.0 

52.0 
52.0 
52.0 
53.2 
54.5 

54.5 
52.9 
51.2 
49.5 
52.0 

49.5 
47.0 
47.0 
47. 
49.5 

52.0 
52.0 
50.7 
49.5 
46.3 


43.0 
47.0 
45.0 
52.0 
49.5 

47.0 
47.0 
60.5 
74.0 
60.5 

47.0 
46.0 
45.0 
45.0 
43.0 

41.0 
39.0 
37.0 
41.0 
45.0 

43.0 
37.0 
35.0 
45.0 
35.0 

43.5 

52.0 
52.0 
49.5 
45.0 
43.0 


43.0 
42.0 
41.0 
33.0 
33.0 

31.0 
27.0 
35.0 
43.5 
52.0 

47.0 
47.0 
47.0 
47. 
47.0 

46.0 
45.0 
43.0 
54.5 
43.0 

54.5 
45.0 
52.2 
59.5 
45.0 

45.0 
43.0 
45.0 
39.0 
41.0 


43.0 
49.5 
43.0 
43.0 
43.0 

43.0 
43.0 
43.0 
52.0 
47.0 

49.5 
49.5 
43.0 
44.0 
45.0 

43.0 
41.0 
39.0 
39.0 
39.0 

37.0 
35.0 
35.0 
47.0 
49.5 

43.0 
47.0 
46.0 
45.0 
43.0 
33.0 


31.0 
29.0 
31.0 
29.0 
27.0 

21.5 

27.0 
21.5 
52.0 
49.5 

50.7 
52.0 
54.5 
52.0 
47.0 

52.0 
47.0 
49.5 
52.0 
43.0 

41.0 
52.0 
49.5 
43.0 
39.0 

35.0 
41.0 
39.0 
43.0 
41.0 
41.0 


50.2 
59.5 
57.0 
54.5 
54.5 

47.0 
52.0 
48.5 
45.0 
43.0 

43.0 
43.0 
41.0 
41.0 
40.0 

39.0 
37.0 
41.0 
27.0 
27.0 

27.0 
25.0 
23.0 
23.0 
21.5 

23.0 
20.0 
20.0 
33.5 
47.0 


52.0 
57.0 
47.0 
35.0 
31.0 

31.0 
31.0 
23.8 
35.0 
31.8 

27.0 
57.0 
52.0 
47.0 
57.0 

47.0 
43.0 
43.0 
39.0 
43.0 

47.0 
57.0 
57.0 
52.0 
52.0 

47. Q 
52.0 
57.0 
52.0 
52.0 
52.0 


52.0 
52.0 
52.0 
52.0 
49.5 

47.0 
47.0 
47.0 
62.0 
55.7 

49.5 
47.0 
45.0 
45.0 
43.0 

49.5 
53.8 
57.0 
57.0 
57.0 

59.5 
54.5 
54.5 
70.2 
86.0 

86.0 
52.0 
47.0 
47.0 
47.0 


54.5 


2 .' 


62.0 


3 


43.0 


4 


39.0 


5 


12.0 


6 


12.0 


7 


14.0 


8 


10.5 


9 


7.0 


10 


7.0 


11... ■ 


5.0 


12 


5.0 


13 


6.0 


14 


6.0 


15 


8.0 


16 


8.0 


17 


8.0 


18 


9.0 


19 


43.0 


20 


31.0 


21 


29.0 


22 


29.0 


23 


29.0 


24 


48.5 


25 




43.7 


26.... 




39.0 


27 




39.0 


28 




27.8 


29 




20.1 


30 




12.4 


31 






12.0 











Note. — Discharge interpolated for days for which gage heights are missing. 

Monthly discharge of Sprechels ditch at station No. 7, near Huelo, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January (1-23) .. 
February (17-29) 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 



59.5 
57.0 
74.0 
59.5 
52.0 
54.5 
59.5 
57.0 
86.0 
62.0 



21.5 
45.0 
35.0 
27.0 
33.0 
21.5 
20.0 
23.8 
43.0 
5.0 



20.4 
50.3 
49.3 
50.9 
46.3 
43.9 
43.3 
41.4 
38.4 
45.4 
54.1 
23.2 



930 
1,300 
3,030 
3,030 
2,850 
2,610 
2,660 
2,550 
2,280 
2,790 
3,220 
1,430 



The period. 



28,700 



ISLAND OF MAUI. 



185 



SPRECKELS DITCH AT STATION NO. 8, NEAR HTTELO, MATTI. 

Location. — About 1 mile by trail east of Huelo post office and 275 feet above gate 

to storage reservoir. 
Records available. — November 4, 1911, to December 31, 1912. 
Gage. — Vertical staff; read once daily, at irregular hours; datum unchanged. 
Channel. — Permanent. 

Discharge measurements. — Made from plank. 
Accuracy. — Good. 
Cooperation. — East Maui Ditch Co. assists in securing gage heights. 

Discharge measurements of Spreckels ditch at station No. 8, near Huelo, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Sept. 21 
Dec. 25 


J. B. Stewart 


Feet. 
1.58 
1.56 


Sec.-ft. 
26.4 


C. T. Bailey 


27.5 









Daily gage height, in feet, of Spreckels ditch at station No. 8, near Huelo, Maui, for 1912. 



Day. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




2.20 
2.40 


2.25 

2.40 
2.40 
2.55 
2.40 

2.35 

"2."30' 
2.25 
2.30 

2.30 

2.35 
2.30 

"*2,"40" 

2.40 


2.10 

2.20 
2.15 
2.20 

2.20 
2.15 


1.90 

"i.85" 

1.65 
1.65 

1.60 
1.60 
1.80 


2.00 
2.25 
2.10 


1.70 
1.65 
1.70 


"2. 50* 
2.25 
2.40 
2.10 

2.10 
2.20 

"2. l6" 
2.05 

2.05 
2.04 
1.95 
1.95 

1.90 
1.85 
1.70 
1.65 
1.70 

1.70 

"'i.'so" 

1.50 
1.45 

1.50 
1.40 
1.40 

"2."i6" 


2.20 
2.40 
2.20 
1.70 
1.62 

"i."62* 
1.60 
1.80 
1.70 

1.60 

2.40 

"2. i6' 
2.40 

2.10 
2.10 
2.00 
2.00 

2.30 
2.50 
2.50 
2.30 
2.20 

2.00 

'*2.' 56' 
2.50 
2.40 
2.30 


2.20 
2.20 

"2. 20* 

2.10 

2.10 
2.10 
2.60 

2.20 
2.15 
2.10 
2.10 
2.05 

2.20 

"2.56" 

2.40 
2.40 

2.45 
2.30 
2.35 

" : L90' 

1.90 
2.25 
2.20 
2.20 
2.20 




2 . ... 




2.10 


3 




2.00 


4 




2.25 
2.25 

2.25 
2.30 
2.20 
2.30 


1.30 


5 




"2." 66' 

2.20 
2.10 

2.10 
2.10 

1.85 
2.10 
2.10 

2.10 
2.05 
2.00 
1.90 
1.90 

"I.'so* 

1.80 
2.30 
1.90 

2.00 
2.10 

"2. 16' 
2.05 
1.75 


1.60 

1.50 
1.C0 
1.50 
2.20 
2:15 

"2." 26" 
2.35 
2.20 
2.10 

2.20 
2.10 
2.05 
2.20 
2.00 

1.95 
2.20 
2.15 
2.00 

1.90 
1.95 
1.75 
2.05 
2.00 
2.10 


1.30 


6 




1.40 


7 




2.50 


8 






9 




.70 


10 




2.10 

2.10 

"2. 05' 
1.95 
1.95 

1.90 
1.90 
1.90 

"i.96" 

2.10 
1.90 
1.70 
2.10 
1.70 

"2*20" 
2.25 
2.20 
2.10 
2.05 


2.30 

1.20 
2.10 
2.10 
2.10 
2.10 

"2. 66" 

1.85 
2.10 
1.95 

2.10 
1.95 

"2. 35" 
1.95 

1.95 
1.95 
2.10 
1.90 


.70 


11 




2.40 
2.40 
2.40 
2.35 
2.30 

2.30 


.50 


12.... . 




-50 


13 ... . 




.65 


14 




.65 


15 




.80 


16 






17 


1.50 


.80 


18 . 


2.40 
2.25 
2.25 

2.20 
2.15 
2.15 

' "2."20' 

2.25 
2.25 
2.10 
2.20 
2.25 


"*2."25" 
2.30 

"*2.'20' 
2.20 
2.20 
2.20 

2.25 
2.25 

"2.15" 

2.10 


.90 


19 


1.80 
2.40 

2.45 
2.35 
2.30 
2.30 


2.10 


20 


2.00 


21 


1.88 


22 




23 


2.70 


24 


1.90 


25 




26 


2.10 
2.40 
2.30 
2.30 


1.90 


27 


1.90 


28 


1.62 


29 




30 


.92 


31 




.90 













186 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, of Sprechels ditch at station No. 8, near Huelo, Maui, 

for 1912. 



Day. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




50.0 
58.0 
55.0 
52.0 
52.0 

52.0 
54.0 
50.0 
54.0 
56.0 

58.0 
58.0 
58.0 
56.0 
54.0 

54.0 
56.0 
58.0 
52.0 
52.0 

50.0 

48.0 
48.0 
49.0 
50.0 

52.0 
52.0 
46.0 
50.0 
52.0 
52.0 


52.0 
58.0 
58.0 
64.5 
58.0 

56.0 
55.0 
54.0 
52.0 
54.0 

54.0 
56.0 
54.0 
56.0 
58.0 

58.0 
56.0 
54.0 
52.0 
54.0 

52.0 
50.0 
50.0 
50.0 
50.0 

52.0 
52.0 
50.0 
48.0 
46.0 


46.0 
50.0 
48.0 
50.0 
50.0 

50.0 
48.0 
47.3 
46.6 
46.0 

46.0 
45.0 
44.0 
40.0 
40.0 

38.0 

38.0 
38.0 
38.0 
38.0 

46.0 
38.0 
31.0 
46.0 
31.0 

40.5 
50.0 
52.0 
50.0 
46.0 
44.0 


38.0 
37.0 
36.0 
29.5 
29.5 

28.0 
28.0 
34.0 
44.0 
54.0 

16.0 

46.0 
46.0 
46.0 
46.0 

44.0 

42.0 
36.0 
46.0 
40.0 

46.0 
40.0 
48.0 
56.0 
40.0 

40.0 
40.0 
46.0 
38.0 
40.0 


42.0 
52.0 
46.0 
45.2 
44.4 

43.6 

42.8 
42.0 
50.0 
46.0 

46.0 
46.0 
36.0 
46.0 
46.0 

46.0 
44.0 
42.0 
38.0 
38.0 

36.0 
34.0 
34.0 
54.0 
38.0 

42.0 
46.0 
46.0 
46.0 
44.0 
32.5 


31.0 

29.5 
31.0 
29.5 
28.0 

25.0 

28.0 
25.0 
50.0 
48.0 

49.0 
50.0 
56.0 
50.0 
46.0 

50.0 
46.0 
44.0 
50.0 
42.0 

40.0 

50.0 
48.0 
42.0 
40.0 

38.0 
40.0 
32.5 
44.0 
42.0 
46.0 


54.0 
62.0 
52.0 
58.0 
46.0 

46.0 
50.0 
48.0 
46.0 
44.0 

44.0 
43.6 
40.0 
40.0 
39.0 

38.0 
36.0 
31.0 
29.5 
31.0 

31.0 

28.0 
25.0 
25.0 
23.5 

25.0 
22.0 
22.0 
34.0 
46.0 


50.0 
58.0 
50.0 
31.0 
28.6 

28.6 
28.6 
28.0 
34.0 
31.0 

28.0 
58.0 
52.0 
46.0 
58.0 

46.0 
46.0 
42.0 
42.0 
48.0 

54.0 

62.0 
62.0 
54.0 
50.0 

42.0 
52.0 
62.0 
62.0 
58.0 
54.0 


50.0 
50.0 
50.0 
50.0 
48.0 

46.0 
46.0 
46.0 
67.0 
58.5 

50.0 
48.0 
46.0 
46.0 
44.0 

50.0 
56.0 
62.0 
58.0 
58.0 

60.0 
54.0 
56.0 
47.0 
38.0 

38.0 
52.0 
50.0 
50.0 
50.0 


48.0 


2 




46.0 


3 . 




42.0 


4 




19.0 


5 




19.0 


6 '.. 




22.0 


7 




62.0 


8 




34.0 


9 




6.0 


10 




6.0 


11 




4.0 


12 




4.0 


13 




5.5 






5.5 


15 




8.0 


16 




8.0 




29.5 

58.0 

60.0 
56.0 
54.0 
54.0 
50.0 

46.0 
58.0 
54.0 
54.0 


8.0 


18... 


10.0 




46.0 


20 


42.0 


21 


37.2 


22 


54.0 


23 . 


72.0 


24 


38.0 


25 


38.0 


26 


38.0 


27 


38.0 


28 


28.6 


29 


19.5 


30 


10.4 


31 




10.0 









Monthly discharge of Sprechels ditch at station No. 8, near Huelo, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. 



Minimum. 



Mean. 



Run-ofl 
(total in 
acre-feet). 



Accu- 
racy. 



January... 
February.. 

March 

April 

May 

June 

July 

August 

September. 

October 

November. 
December. 



60.0 
58.0 
64.5 
52.0 
56.0 
54.0 
56.0 
62.0 
62.0 
67.0 
72.0 



25.0 
46.0 
46.0 
31.0 
16.0 
32.5 
25.0 
22.0 
28.0 
38.0 
4.0 



48.7 
52.8 
53.8 
43.9 
40.0 
43.0 
41.0 
38.7 
46.6 
50.8 
26.7 



1,250 
3,250 
3,200 
2,700 
2,380 
2,640 
2,520 
2,300 
2,870 
3,020 
1,640 



The period. 



27,800 



CENTER DITCH REGION. 
CENTER DITCH NEAR HUELO, MAUI. 

Location. — About 3 miles by trail southeast of Huelo post office and about 1$ miles 

below ditch intake at Puohakamoa Stream. 
Records available. — January 1, 1910, to December 31, 1912. 
Gage. — Vertical staff; datum unchanged. 
Channel. — Probably permanent. 

Discharge measurements. — Made from plank across ditch. 
Accuracy. — Good . 
Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 



ISLAND OF MAUI. 187 

Discharge measurements of Center ditch near Huelo, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Mar 11 




Inches. 
23.2 
49.9 


Sec-ft. 
39.2 




C. T. Bailey 


87.0 









Daily gage height, in inches, of Center ditch near Huelo, Maui, for 1912. 
[Asada, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 

2 


21.9 
25.8 
20.4 
15.4 
16.5 

9.5 
7.9 
10.8 
8.4 
6.9 

5.0 
4.1 
3.5 
3.0 
3.0 

3.0 
3.0 
3.0 
3.0 
3.0 

3.0 
3.0 
3.0 

6.2 

4.4 

3.6 
3.1 
3.0 
3.0 
3.0 
4.6 


3.8 
2.9 
3.0 
2.9 

2.8 

2.8 
2.5 
5.6 
7.6 
4.6 

9.4 

8.4 

38.2 

22.4 

11.8 

5.2 
4.5 
4.0 
26.9 
49.0 

50.0 

48.5 
46.6 
38.2 
36.1 

29.9 
53.0 
53.8 
51.5 


53.5 
53.5 
53.5 
50.8 
48.0 

48.4 
50.1 
48.4 
49.4 
50.1 

53.0 
54.0 
54.2 
52.8 
50.1 

42.2 
38.6 
35.5 
34.0 
47.5 

40.2 
31.5 
26.5 
25.0 
21.5 

43.2 
14.2 
12.8 
12.8 
47.0 
55.0 


54.5 
52.5 
54.2 
52.0 
47.0 

51.0 
54.5 
54.5 
54.0 
53.8 

52.8 
53.8 
53.5 
53.8 
54.2 

54.2 
53.8 
53.2 
52.0 
53.0 

53.8 
52.8 
46.5 
45.5 
52.8 

54.0 
51.0 
41.0 
32.0 
31.8 


27.5 
27.0 
29.8 
43.5 
49.8 

41.8 
27.8 
39.8 
24.4 
19.1 

15.6 
12.8 
9.8 
8.8 
6.8 

6.0 
5.6 
5.4 
6.5 
9.0 

7.1 
5.2 
4.8 
7.0 
5.4 

24.8 
47.5 
26.8 
29.0 
14.1 
9.8 


6.0 
5.5 
5.1 
4.6 
4.2 

4.2 
4.5 
6.8 
6.4 
31.0 

40.9 
23.0 
26.4 
16.0 
21.0 

22.2 
10.0 
6.5 
12.6 
11.0 

28.6 
12.2 
6.6 
35.8 
14.0 

11.8 
14.0 
9.2 
5.8 
5.2 


8.1 
20.0 
25.5 
36.6 
22.5 

11.4 
9.9 
21.4 
47.5 
27.2 

31.5 
14.4 
29.9 
17.8 
15.8 

9.4 
6.2 
5.8 
5.4 
5.1 

6.1 
5.2 
4.8 
23.5 
9.4 

5.6 
6.J6 

6.8 
12.5 
5.8 
4.6 


4.1 
4.0 

4.8 
4.2 
3.9 

3.8 
4.5 
4.5 
14.0 

8.2 

32.8 
21.8 
16.0 
28\2 
45.0 

29.6 
17.5 

8.9 
14.6 

5.9 

5.2 
22.6 
10.6 
5.5 
4.9 

5.4 
5.6 
4.8 

17.0 
8.4 

13.1 


9.1 
50.9 
38.6 
34.4 
24.1 

28.0 
45.8 
27.9 
17.1 
13.0 

8.4 
5.6 
5.1 
4.8 
4.5 

4.5 
4.5 
4.5 
4.5 
4.5 

4.4 
4.1 
3.9 
3.8 
3.6 

3.5 
3.5 
3.5 

4.4 
39.1 


13.4 

27.0 

13.9 

4.9 

3.9 

3.2 
3.0 
3.0 
4.9 

6.4 

3.0 
13.1 
12.2 
46.0 
31.2 

15.2 
7.4 
4.1 
3.8 
3.4 

52.0 

54.5 
51.1 
44.2 
32.0 

34.1 
55.0 
53.1 
34.1 
45.1 
55.0 


41.1 
33.5 
45.9 
30.2 
21.5 

20.6 
15.6 
13.5 
55.0 
55.8 

48.1 
33.9 
27.0 
25.2 
17.8 

55.0 
55.0 
55.0 
50.4 
47.9 

40.8 
42.4 
39.1 
32.2 
35.1 

32.9 
26.6 
29.0 
18.4 
18.5 


41.2 
54.8 


3 


50.2 


4 


32.4 


5 


29.5 


6 


32.2 


7 


35.2 


8 


34.8 


9 


33.2 


10 


30.4 


11 


30.0 


12 


48.2 


13 


36.8 


14. 

15 


28.2 
30.6 


16 


38.1 


17 


24.6 


18 


45.5 


19 


50.2 


20 


50.8 


21 


43.0 


22 


56.5 


23 


36.0 


24 


55.5 


25 


53.0 


26 


55.8 


27 


55.5 


28 


54.8 


29 : 


51.4 


30 


49.2 


31 


40.8 







Note. — Gage read at 6 a. m. and 6 p.m. 

Daily discharge, in second-feet, of Center ditch near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


32.8 
41.6 
29.8 
19.8 
22.0 

9.2 
7.1 

10.8 
7.7 
5.9 

3.9 
3.0 
2.4 
2.0 
2.0 


2.7 
1.9 
2.0 
1.9 
1.8 

1.8 
1.6 
4.5 
6.7 
3.5 

9.1 

7.7 
66.4 
33.8 
12.6 


93.5 
93.5 
93.5 
89.6 
85.0 

85.8 

88.2 
85.8 
87.4 
88.2 

93.0 
94.0 
94.4 
92.6 

88.2 


95.0 
92.0 
94.4 
91.0 
83.0 

90.0 
95.0 
95.0 
94.0 
93.8 

92.6 
93.8 
93.5 
93.8 
94.4 


45.0 
44.0 
49.6 
77.0 
87.8 

73.6 
45.6 
69.6 
38.2 
27.2 

20.2 

14.6 

' 9.7 

8.2 

5.8 


4.9 
4.4 
4.0 
3.5 
3.1 

3.1 
3.4 
5.8 
5.3 
52.0 

71.8 
35.0 
42.8 
21.0 
31.0 


7.3 
29.0 
41.0 
63.2 
34.0 

11.8 
9.8 
31.8 
84.0 
44.4 

53.0 
17.8 

49.8 
24.6 
20.6 


3.0 
2.9 
3.7 
3.1 

2.8 

2.7 
3.4 
3.4 
17.0 
7.5 

55.6 
32.6 
21.0 
46.4 
80.0 


8.6 
89.8 
67.2 
58.8 
37.3 

46.0 

80.8 
45.8 
23.2 
15.0 

7.7 
4.5 
4.0 
3.7 
3.4 


15.8 

44.0 

16.8 

3.8 

2.8 

2.2 
2.0 
2.0 
3.8 
5.3 

2.0 
15.2 
13.4 
81.0 
52.4 


72.2 
57.0 
80.9 
50.4 
32.0 

30.2 
20.2 
16.0 
96.0 
96.8 

85.2 
57.8 
44.0 
40.4 
24.6 


72.4 


2 


95.6 


3 


88.4 


4 


54.8 


5 


49.0 


6 


54.4 


7 


60.4 


8 


59.6 


9 


56.4 


10 


50.8 


11 


50.0 


12 


85.4 


13 


63.6 


14 


46.4 


15 


51.2 



188 



Daily discharge, in second-feet, of Center ditch near Huelo, Maui, for 1912 — Continued. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



16 
17 
18 
19 
20 

21 

22 
23 
24 
25 

26 

27 
23 
29 
30 
31 



2.0 
2.0 
2.0 
2.0 
2.0 

2.0 
2.0 
2.0 
5.1 
3.3 

2.5 
2.1 
2.0 
2.0 
2.0 
3.5 



4.1 
3.4 
2.9 
43.8 
87.0 

88.0 
86.0 
82.2 
66.4 
62.2 

49.8 
93.0 
93.8 
90.5 



74.4 
67.2 
61.0 
58.0 
84.0 

70.4 
53.0 
43.0 
40.0 
32.0 

76.4 
17.4 
14.6 
14.6 
83.0 
96.0 



94.4 
93.8 
93.2 
91.0 
93.0 

93.8 
92.6 
82.0 
80.5 
92.6 

94.0 
90.0 
72.0 
54.0 
53.6 



4.9 
4.5 
4.3 
5.4 

8.5 

6.1 
4.1 
3.7 
6.0 
4.3 

39.4 
84.0 
43.6 
48.0 
17-2 
9.7 



33.4 
10.0 
5.4 
14.2 
11.0 

47.2 
13.4 
5.6 
61.6 
17.0 

11.2 
17.0 

8.8" 
4.7 
4.1 



9.1 
5.1 
4.7 
4.3 
4.0 

5.0 
4.1 
3.7 
36.0 
9.1 

4.5 



14.0 
4.7 
3.5 



49.2 

24.0 

8.4 

18.2 
4.8 

4.1 
34.2 
10.6 
4.4 
3.8 

4.3 
4.5 
3.7 

23.0 

7.7 
15.2 



3.4 
3.4 
3.4 
3.4 

3.4 

3.3 
3.0 

2.8 
2.7 
2.5 

2.4 
2.4 
2.4 
3.3 

68.2 



19.4 
6.5 
3.0 
2.7 
2.4 

91.0 
95.0 
90.1 

78.4 
54.0 

58.2 
96.0 
93.1 
58.2 
80.1 
96.0 



96.0 
96.0 
96.0 

88.8 
84.8 

71.6 

74.8 
68.2 
54.4 
60.2 

55.8 
43.2 
48.0 
25.8 
26.0 



66.2 
38.8 
80.5 
88.4 
89.6 



93. 



96.5 
95.6 
90.4 
87.2 
71.6 



Note. — Discharge computed from mean of two gage readings each day. 

Monthly discharge of Center ditch near Huelo, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



41.6 
93.8 
96.0 
95.0 
87.8 
71.8 
84.0 
80.0 
89.8 
96.0 



2.0 

1.6 

14.6 

53.6 

3.7 

3.1 

3.5 

2.7 

2.4 

2.0 

16.0 

38.8 



7.69 
34.90 
72.20 
88.70 
29.30 
18.50 
20.80 
16.30 
20.20 
38.30 
59.80 
73.10 



473 
2,010 
4,440 
5,280 
1,800 
1,100 
1,280 
1,000 
1,200 
2,360 
3,560 
4,490 



67.30 



29,000 



HAMAKUA DITCH REGION. 
NAILIILIHAELE STREAM NEAR HUELO, MATTI. 

Location. — About 2 miles by trail above Huelo post office, 1 mile above Lowrie 
ditch intake, and 50 feet above trail ford. 

Records available. — July 24 to December 31, 1912. From December 9, 1910, to 
December 31, 1911, a station was maintained above the New Hamakua ditch 
intake. 

Gage. — Vertical staff; read twice daily, at 5.30 a. m. and 5.30 p. m.; datum un- 
changed. 

Channel. — Permanent. 

Discharge measurements. — Made by wading. 

Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 

Discharge measurements of Nailiilihaele Stream near Huelo, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 24 
Nov. 11 


J. B.Stewart 


Feet. 
0.75 
1.60 


Sec.-ft. 
1.00 


do 


44.3 









ISLAND OF MAUI. 189 

Daily gage height, in feet, of Nailiilihaele Stream near Huelo, Maui, for 1912. 
JEurukawa, observer.] 



Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.45 

.44 
.52 
.48 
.42 

.40 
.48 
.52 
.92 
1.30 

1.30 
1.32 
.88 
1.38 
2.02 


0.50 
1.80 
1.30 
1.20 
1.15 

.80 
1.60 
.85 
.68 
.52 

.50 
.45 
.45 
.45 
.45 


0.45 

.85 
.45 
.40 
.40 

.40 
.40 
.40 
.40 
.40 

.50 

.40 

.40 

1.50 

1.25 


1.45 

1.15 

1.85 

.90 

.80 

.50 

.65 

.50 

3.35 

1.75 

1.65 

1.15 

.95 

.80 

.60 


1.45 
2.20 
3.40 
1.65 
1.55 

1.45 
1.55 
1.40 
1.15 
.80 

.65 
.50 
.45 
.65 
.45 


16 




1.42 

.82 
.70 
.60 
.52 

.45 
.72 
.62 
.52 
.42 

.45 
.45 
.45 
.78 
.58 
.65 


0.45 
.45 
.45 
.42 
.40 

.40 
.40 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.75 


0.50 
.40 
.40 
.40 

.40 

1.80 
2.10 
1.70 
1.55 
1.15 

1.35 

2.80 
2.80 
1.45 
1.60 
2.25 


1.54 
2.30 
2.40 
1.70 
1.65 

1.40 
1.45 
1.40 
1.15 
1.20 

1.20 
.85 
.70 
.60 
.70 


0.90 


2 




17 




.45 


3 




18 




1.25 


4 




19 




2.00 


5 




20 




1.50 


6 




21 




2.15 


7 




22 




2.55 


g 




23 




2.25 


9 




24 




1.70 


10--.. 




25.— 


1.05 

.92 

.82 
.72 
.88 
.45 

.45 


1.30 


11..... 




26 


1.80 


12 




27 


1.50 


13... 




28 


1.60 


14 




29 


1.35 


15 . 




30 


1.25 






31 


1.10 









KAILTTA STREAM NEAR HTJELO, MATJI. 

Location. — At wagon bridge about 1,000 feet east of Huelo post office. 

Records available. — July 25 to December 31, 1912. From December 8, 1910, to 

December 31, 1911, a station was maintained above the New Hamakua ditch 

intake. 
Gage. — Vertical staff; read once daily, at irregular hours; datum unchanged. 
Channel. — One channel at all stages; probably permanent. 
Discharge measurements. — Made by wading or from bridge. 
Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 

Discharge measurements of Kailua Stream near Huelo, Maui, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 25 


J. B . Stewart 


Feet. 
0.38 
.25 


Sec.-ft. 
0.30 


Sept. 24 


do '. 


.10 







Daily gage height, in feet, of Kailua Stream near Huelo, Maui, for 1912. 
[John Pachero, observer.] 



Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.33 
.33 
.34 
.30 
.30 

.27 
.30 
.28 
.36 
.36 

.40 
.55 
.42 
.41 
2.95 


Too" 

1.80 

2.60 

.60 

.53 
2.60 

'".52 
.42 

.36 
.34 
.31 
.30 
.30 


0.82 
.62 
.62 
.43 
.43 

.42 
.32 
.34 
.34 
.33 

.44 

.62 

2.12 

1.42 

.42 


2.40 
2.20 
2.20 
2.20 

.82 

.82 

.72 

5.50 

3.30 

2.60 

2.10 

2.00 

.80 

.78 


1.70 
3.50 
4.50 
2.60 
2.30 

2.20 
2.30 
2.20 
1.90 
1.80 

1.00 
.82 
.80 
.80 
.72 


16 




0.76 
.54 
.40 
.42 
.33 

.31 
.42 
.40 

.38 

.32 
.32 
.23 
.30 
.30 
.31 


0.29 
.23 
.23 
.22 
.31 

.30 

"\*23" 
.23 
.21 

.22 
.21 
.23 
.23 
1.10 


0.62 
.53 
.52 
.52 

.42 

2.50 
2.30 
2.62 
2.30 
2.22 

2.60 
4.10 
4.60 
2.22 
2.60 
2.40 


3.50 
3.40 
3.90 
2.70 
2.50 

2.40 
2.30 
2.50 
2.10 
1.50 

1.48 

1.70 

1.00 

.92 

.82 


1.70 


2 




17 




.82 


3 




18 




1.80 


4 




19 




2.70 


5 




20 . 




2.70 


6 




21 




1.90 


7..... 




22 




3.30 


8 




23 




4.30 


9 


24 




2.33 


10 




25 

26 


0.38 




11 




3.00 


12 




27 


.36 
.36 
.36 
.35 
.33 


2.13 


13 




28 


2.00 


14 




29 


2.20 


15 




30 


2.20 






31 


2,00 









190 



WATER RESOURCES OF HAWAII, 1912. 



HOOLAWALIILII STREAM NEAR HUELO, MATJI. 

Location. — About 3 miles by trail southwest of Huelo post office, 1 mile east of Lupi, 
200 feet above inflow of Old Hamakua ditch and 400 feet above New Hamakua 
ditch crossing. 

Records available. — April 5, 1911, to December 31, 1912. 

G- a g e# — Vertical staff; read twice daily, about 6.30 a. m. and 4 p. m.; datum un- 
changed. 

Channel. — Rocky. 

Discharge measurements.— Made by wading. 

Accuracy. — Very good. 

Discharge measurements of Hoolawaliilii Stream near Huelo, Maui, in 1912. 
[J. B. Stewart, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Jan. 13 


Feet. 
0.12 
.39 
.13 


Sec-ft. 
3.09 
10.0 
1 3.03 


Sept. 20.. 
Nov. 12... 




Feet. 
0.12 
.28 


Sec-ft. 
2.32 


Mar. 12 


10.9 


July 25 









Daily gage height, in feet, of Hoolawaliilii Stream near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0. 16 
.16 
.15 
.14 
.13 

.12 
.12 
.13 
.12 
.12 

.12 
.12 
.11 
.11 
.11 

.11 
.11 
.11 
.10 
.10 

.10 
.09 
.09 
.12 
.10 

.10 
. .09 
.09 
.09 
.09 
.09 


0.09 
.09 
.09 
.09 
.09 

.09 
.08 
.08 

.12 
.10 

.10 
.10 
.19 
.14 
.12 

.12 
.12 
.12 
.17 
.21 

.30 
.32 
.24 
.22 
.24 

.20 
.34 
.39 

.27 


0.26 
.30 
.32 

.27 
.25 

.24 
.25 
.22 

.28 
.26 

.42 
.38 
.42 
.33 
.29 

.25 
.26 
.36 
.28 
.26 

.24 
.22 
.20 
.20 
.19 

.20 
.18 
.16 
.15 
.18 
.16 


0.20 
.20 

.26 
.78 
.61 

.46 
.52 
.52 
.52 
.42 

.38 
.36 
.32 
.34 
.34 

.32 
.30 
.25 
.24 
.32 

.24 
.22 
.24 
.22 
.25 

.26 
.24 
.24 
.22 
.20 


0.20 
-.21 
.18 
.19 
.18 

.21 
.19 
.20 
.18 
.16 

.15 
.14 
.14 
.14 
.12 

1 .12 
.12 
.12 
.12 
.14 

.12 
.11 
.11 
.12 
.11 

.13 
.18 
.16 
.18 
.13 
.14 


0.13 
.13 
.12 
.12 
.11 

.11 
.11 
.12 
.11 
.18 

.16 
.13 
.15 
.13 
.13 

.13 
.13 
.13 
.12 
.13 

.13 
.12 

.12 
.22 
.14 

.14 
.13 
.13 
.13 
.12 


0.12 
.12 
.14 
.14 
.14 

.14 
.14 
.14 
.21 
.14 

.18 
.14 
.15 
.15 
.14 

.14 
.14 
.13 
.13 
.13 

.13 
.13 
.13 

.14 
.14 

.14 
.13 
.14 
.13 
.13 
.12 


0.12 
.12 
.12 
.11 
.11 

.11 
.12 
.11 
.13 
.12 

.17 
.12 
.12 
.14 
.27 

.16 
.14 
.13 
.13 
! .12 

i .12 
.16 
.12 
.12 
.12 

.12 
.12 
.13 
.12 
.13 
.12 


0.13 
.20 
.19 
.20 

.14 

.14 
.16 
.15 
.14 
.14 

.12 
.12 
.12 
.12 
.13 

.13 
.14 
.12 
.12 
.12 

.12 
.12 
.12 
.12 
.12 

.11 
.11 
.11 
.12 
.15 


0.12 
.13 

.12 
.12 
.10 

.10 
.09 
.08 
.08 
.08 

.08 
.08 
.08 
.12 
.16 

.10 
.08 
.08 
.08 
.08 

.16 
.20 
.20 
.18 
.15 

.20 
.34 
.39 
.24 
.26 
.27 


0.24 

.22 
.35 
.22 
.20 

.18 
.16 
.14 
.52 
.34 

.28 
.24 
.22 
.20 
.18 

.38 
.39 
.42 
.36 
.36 

.28 
.26 
.26 
.24 
.24 

.22 
.20 
.20 
.18 
.18 


0.22 


2. 


.42 


3 


.74 


4 


.35 


5 


.25 


6 


.24 


7 


.24 


8 


.22 


9 


.21 


10 


,20 


11 


.18 


12... 


.17 


13 


.16 


14 


.16 


15. 


.16 


16 


.16 


17 


.16 


18. 


.18 


19 


.28 


20 


.20 


21 


.32 


22 


.32 


23 


.34 


24. 


.33 


25 


.30 


26 


.28 


27 

28 


.26 
.26 


29 


.24 


30 


.24 


31 


.22 







ISLAND OF MAUI. 191 

Daily discharge, in second-feet, of Hoolawaliilii Stream near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


4.6 
4.6 
4.2 
3.9 
3.6 

3.2 
3.2 
3.6 
3.2 
3.2 

3.2 
3.2 
2.8 
2.8 
2.8 

2.8 
2.8 
2.8 
2.5 
2.5 

2.5 
2.2 
2.2 
3.2 
2.5 

2.5 
2.2 
2.2 
2.2 
2.2 
2.2 


2.2 
2.2 
2.2 
2.2 
2.2 

2.2 
2.0 
2.0 
3.2 
2.5 

2.5 
2.5 
5.6 
3.9 
3.2 

3.2 
3.2 
3.2 
5.0 

6.5 

11.0 

12.1 

8.0 

7.0 

8.0 

6.0 
13.2 
16.0 

9.5 


9.0 
11.0 
12.1 
9.5 
8.5 

8.0 
8.5 
7.0 
10.0 
9.0 

17.6 
15.4 
17.6 
12.6 
10.5 

8.5 
9.0 
14.3 
10.0 
9.0 

8.0 
7.0 
6.0 
6.0 
5.6 

6.0 
5.3 
4.6 
4.2 
5.3 
4.6 


6.0 
6.0 
9.0 

38.8 
28.6 

19.8 
23.2 
23.2 
23.2 
17.6 

15.4 
14.3 
12.1 
13.2 
13.2 

12.1 
11.0 
8.5 
8.0 
12.1 

8.0 
7.0 
8.0 
7.0 

8.5 

9.0 
8.0 
8.0 
7.0 
6.0 


6.0 
6.5 
5.3 
5.6 
5.3 

6.5 
5.6 
6.0 
5.3 
4.6 

4.2 
3.9 
3.9 
3.9 
3.2 

3.2 
3.2 
3.2 
3.2 
3.9 

3.2 

2.8 
2.8 
3.2 
2.8 

3.6 
5.3 
4.6 
5.3 
3.6 
3.9 


3.6 
3.6 
3.2 
3.2 

2.8 

2.8 
2.8 
3.2 
2.8 
5.3 

4.6 
3.6 
4.2 
3.6 
3.6 

3.6 
3.6 
3.6 
3.2 
3.6 

3.6 
3.2 
3.2 
7.0 
3.9 

3.9 
3.6 
3.6 
3.6 
3.2 


3.2 
3.2 
3.9 
* 3.9 
3.9 

3.9 
3.9 
3.9 
6.5 
3.9 

5.3 
3.9 
4.2 
4.2 
3.9 

3.9 
3.9 
3.6 
3.6 
3.6 

3.6 
3.6 
3.6 
3.9 
3.9 

3.9 
3.6 
3.9 
3.6 
3.6 
3.2 


3.2 
3.2 
3.2 

2.8 
2.8 

2.8 
3.2 
2.8 
3.6 
3.2 

5.0 
3.2 
3.2 
3.9 
9.5 

4.6 
3.9 
3.6 
3.6 
3.2 

3.2 
4.6 
3.2 
3.2 
3.2 

3.2 
3.2 
3.6 
3.2 
3.6 
3.2 


3.6 
6.0 
5.6 
6.0 
3.9 

3.9 
4.6 
4.2 
3.9 
3.9 

3.2 
3.2 
3.2 
3.2 
3.6 

3.6 
3.9 
3.2 
3.2 
3.2 

3.2 
3.2 
3.2 
3.2 
3.2 

2.8 
2.8 
2.8 
3.2 
4.2 


3.2 
3.6 
3.2 
3.2 
2.5 

2.5 
2.2 
2.0 
2.0 
2.0 

2.0 
2.0 
2.0 
3.2 

4.6 

2.5 
2.0 
2.0 
2.0 
2.0 

4.6 
6.0 
6.0 
5.3 

4.2 

6.0 
13.2 
16.0 
8.0 
9.0 
9.5 


8.0 
7.0 
13.8 
7.0 
6.0 

5.3 
4.6 
3.9 
23.2 
13.2 

10.0 
8.0 
7.0 
6.0 
5.3 

15.4 
16.0 
17.6 
14.3 
14.3 

10.0 
9.0 
9.0 
8.0 

8.0 

7.0 
6.0 
6.0 
5.3 
5.3 


7.0 


2 


17.6 


3 


36.4 


4 , 


13.8 


5 


8.5 


6 


8.0 


7 


8.0 


8 


7.0 


9 


6.5 


10 


6.0 


11 


5.3 


12. 


5.0 


13 


4.6 


14 


4.6 




4.6 


16 


4.6 


17 


4.6 


18 


5.3 


19 


10.0 


20 


6.0 


21 


12.1 


22 


12.1 




13.2 


24 


12.6 


25 


11.0 


26 


10.0 


27 


9.0 


28 


9.0 


29 


8.0 


30 


8.0 


31.. . 


7.0 







Monthly discharge of Hoolawaliilii Stream near Huelo, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



16.0 

17.6 

38.8 

6.5 

7.0 

6.5 

9.5 

6.0 

16.0 

23.2 

36.4 



38.8 



2.2 
2.0 
4.2 
6.0 
2.8 
2.8 
3.2 
2.8 
2.8 
2.0 



2.0 



2.96 
5.26 
9.02 
13.1 
4.31 
3.64 
3.89 
3.61 
3.70 
4.47 
9.32 
9.21 



182.0 
303.0 
555.0 
780.0 
265.0 
217.0 
239.0 
222.0 
220.0 
275.0 
555. 
566.0 



,380.0 



HOOLAWANUI STREAM NEAR HTJELO, MATJI. 

Location. — About 3| miles by trail southwest from Huelo post office, one-fourth mile 
east of Lupi, and 250 feet above crossing of New Hamakua ditch. 

Records available. — December 12, 1910, to December 31, 1912. 

Gage. — Vertical staff; read twice daily, about 6.30 a. m. and 5 p. m.; datum 
unchanged. 

Channel. — Practically permanent. 

Discharge measurements. — Made by wading. 

Accuracy. — Very good. 

Cooperation.— Station maintained in cooperation with East Maui Ditch Co. 



192 



WATER RESOURCES OF HAWAII, 1912. 



Discharge measurements of Hoolawanui Stream near Huelo, Maui, in 1912. 
[J. B. Stewart, hydrographer.] 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Jan. 13 . 




Feet. 
0.11 
.50 
.08 


" Sec.-ft. 
3.21 
27.0 
3.42 


Sept. 20. 




Feet. 
0.08 
.33 


Sec.-ft. 
2.47 


Mar. 12. 




Nov. 12. 




19.1 


July 25. 















Daily gage height, in feet, of Hoolawanui Stream near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.18 
.18 
.16 
.15 
.14 

.14 
.14 
.14 
.12 
.12 

.10 
.10 
.10 
.10 
.09 

.09 
.08 
.08 
.08 
.08 

.08 
.07 
.07 
.12 
.07 

.07 
.07 
.07 
.06 
.06 
.06 


0.06 
.05 
.05 
.05 
.05 

.05 
.04 
.06 
.12 
.10 

.08 
.06 
.18 
.12 
.08 

.08 
.07 
.06 
.16 
.32 

.40 
.56 
.27 
.24 
.25 

.19 
.29 
.54 
.37 


0.34 
.36 
.45 
.36 
.33 

.30 
.32 
.29 
.32 
.30 

.56 
.49 
.56 
.38 
.33 

.30 
.34 
.45 
.33 
.30 

.28 
.24 
.22 
.22 
.22 

.23 
.20 
.18 
.17 
.27 
.36 


0.36 
.29 
.39 

.98 

.84 

.52 
.76 
.82 
.73 

.57 

.60 
.46 
.39 
.46 
.44 

.38 
.37 
.33 
.31 
.36 

.30 
.26 
.32 
.26 
.29 

.32 
.34 
.30 

.27 
.24 


0.22 
.23 
.20 
.26 
.20 

.24 
.20 
.23 
.20 

.18 

.17 
.16 
.16 
.15 
.14 

.13 
.13 
.13 
.13 
.15 

.14 
.12 
.11 
.12 
.11 

.15 
.20 
.18 
.17 
.13 
.13 


0.12 
.12 
.11 
.10 
.10 

.10 
.10 
.10 
.10 
.18 

.17 
.13 
.15 
.13 
.12 

.12 
.12 
.12 
.12 
.12 

.12 
.12 
.11 
.23 
.14 

.12 
.12 
.12 
.12 
.11 


0.11 
.11 
.14 
.22 
.16 

.13 
.13 
.14 
.26 
.14 

.18 
.14 
.14 
.14 
.13 

.13 

.12 
.12 
.11 
.11 

.12 
.11 
.11 
.14 
.12 

.12 
.11 
.12 
.11 
.10 
.10 


0.08 
.07 
.07 
.06 
.06 

.06 
.06 
.06 
.12 
.08 

.14 
.08 
.08 
.11 
.24 

.14 
.09 
.08 
.08 

.08 

.06 
1.20 
.07 
.06 
.06 

.06 
.06 
.05 
.07 
.06 
.06 


0.07 
.20 
.15 
.15 
.12 

.12 
.14 
.12 

.10 
.08 

.09 
.08 
.08 
.08 
.07 

.07 
.08 
.06 
.06 
.06 

.05 
.05 
.05 
.05 
.05 

.04 
.04 
.04 
.06 
.12 


0.06 
.09 
.06 
.04 
.04 

.04 
.04 
.04 
.04 
.04 

.05 
.04 
.04 
.15 
.12 

.06 
.04 
.04 
.04 
.04 

.22 
.30 
.24 
.21 
.16 

.22 
.38 
.45 
.26 
.32 
.47 


0.31 
.26 
.39 
.24 
.20 

.20 
.18 
.16 
.96 
.53 

.38 
.29 
.24 
.22 
.56 

.50 
.50 
.62 
.48 
.39 

.33 
.31 
.30 
.26 
.26 

.24 
.22 
.20 

.18 
.18 


0.21 


2 


.48 


3 


1.28 


4 


.48 


5 


.36 


6 


.34 


7 


.28 


8 


.24 


9 


.22 


10 


.20 


11 


.20 


12 


.18 


13 


.18 


14 


.18 


15 


.17 


16 


.18 


17 


.23 


18 


.30 


19 


.33 


20 


.22 


21 


.45 


22 


.56 


23. 


.54 


24 


.40 


25 


.42 


26 


.38 




.37 


28 


.34 




.32 


30 


.27 


31 


.24 







Daily discharge, in second-feet, of Hoolawanui Stream near Huelo, Maui, for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


8.0 


2.4 


17.8 


19.2 


10.2 


5.0 


4.5 


3.2 


2.8 


2.4 


15.7 


8.0 


2.0 


19.2 


14.4 


10.8 


5.0 


4.5 


2.8 


9.0 


3.6 


12.6 


7.0 


2.0 


25.5 


21.3 


9.0 


4.5 


6.0 


2.8 


6.5 


2.4 


21.3 


6.5 


2.0 


19.2 


70.2 


12.6 


4.0 


10.2 


2.4 


6.5 


1.6 


11.4 


6.0 


2.0 


17.1 


57.6 


9.0 


4.0 


7.0 


2.4 


5.0 


1.6 


9.0 


6.0 


2.0 


15.0 


30.6 


11.4 


4.0 


5.5 


2.4 


5.0 


1.6 


9.0 


6.0 


1.6 


16.4 


50.4 


9.0 


4.0 


5.5 


2.4 


6.0 


1.6 


8.0 


6.0 


2.4 


14.4 


55.8 


10.8 


4.0 


6.0 


2.4 


5.0 


1.6 


7.0 


5.0 


5.0 


16.4 


47.7 


9.0 


4.0 


12.6 


5.0 


4.0 


1.6 


68.4 


5.0 


4.0 


15.0 


34.6 


8.0 


8.0 


6.0 


3.2 


3.2 


1.6 


31.4 


4.0 


3.2 


33.8 


37.0 


7.5 


7.5 


8.0 


6.0 


3.6 


2.0 


20.6 


4.0 


2.4 


28.3 


26.2 


7.0 


5.5 


6.0 


3.2 


3.2 


1.6 


14.4 


4.0 


8.0 


33.8 


21.3 


7.0 


6.5 


6.0 


3.2 


3.2 


1.6 


11.4 


4.0 


5.0 


20.6 


26.2 


6.5 


5.5 


6.0 


4.5 


3.2 


0.5 


10.2 


3.6 


3.2 


17.1 


24.8 


6.0 


5.0 


£5 


11.4 


2.8 


5.0 


33.8 



Dec. 



1 
2 
3 
4 
5 

6 
7 
8 
9 
10 

11 
12 
13 
14 
15 



9.6 
27.6 
100.0 
27.6 
19.2 

17.8 
13.8 
11.4 
10.2 
9.0 

9.0 
8.0 
8.0 
8.0 
7.5 



ISLAND OP MAUI. 193 

Daily discharge, in second-feet, of Hoolawanui Stream near Huelo, Maui, for 1912 — Contd. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 

2.4 
1.6 
1.6 
1.6 
1.6 

10.2 
15.0 
11.4 
9.6 

7.0 

10.2 
20.6 
25.5 
12.6 
16.4 
26.9 


Nov. 


Dec. 


16 


3.6 
3.2 
3.2 
3.2 
3.2 

3.2 
2.8 
2.8 
5.0 

2.8 

2.8 
2.8 
2.8 
2.4 
2.4 
2.4 


3.2 
2.8 
2.4 
7.0 
16.4 

22.0 
33.8 
13.2 
11.4 
12.0 

8.5 
14.4 
32.2 
19.9 


15.0 
17.8 
25.5 
17.1 
15.0 

13.8 
11.4 
10.2 
10.2 
10.2 

10.8 
9.0 
8.0 
7.5 
13.2 
19.2 


20.6 
19.9 
17.1 
15.7 
19.2 

15.0 
12.6 
16.4 
12.6 
14.4 

16.4 
17.8 
15.0 
13.2 
11.4 


5.5 
5.5 
5.5 
5.5 
6.5 

6.0 
5.0 
4.5 
5.0 
4.5 

6.5 
9.0 
8.0 
7.5 
5.5 
5.5 


5.0 
5.0 
5.0 
5.0 
5.0 

5.0 
5.0 
4.5 
10.8 
6.0 

5.0 
5.0 
5.0 
5.0 
4.5 


5.5 
5.0 
5.0 
4.5 
4.5 

5.0 
4.5 
4.5 
6.0 
5.0 

5.0 
4.5 
5.0 
4.5 
4.0 
4.0 


6.0 
3.6 
3.2 
3.2 
3.2 

2.4 
92.0 
2.8 
2.4 
2.4 

2.4 

2.4 
2.0 
2.8 
2.4 
2.4 


2.8 
3.2 
2.4 
2.4 
2.4 

2.0 
2.0 
2.0 
2.0 

2.0 

1.6 
1.6 
1.6 
2.4 
5.0 


29.0 
29.0 
38.6 
27.6 
21.3 

17.1 
15.7 
15.0 
12.6 
12.6 

11.4 
10.2 
9.0 

8.0 
8.0 


8.0 


17 


10.8 


18 


15.0 


19 


17.1 


20 


10.2 


21 


25.5 


22 


33.8 


23 


32.2 


24 


22.0 


25 


23.4 


26 


20.6 


27 


19.9 


28 


17.8 




16.4 


30 


13.2 




11.4 







Monthly discharge of Hoolawanui Stream near Huelo, Maui, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



Accu- 
racy. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



8.0 
33.8 
33.8 
70.2 
12.6 
10.8 
12.6 
92.0 

9.0 

26.9 

68.4 

100.0 



100.0 



2.4 
1.6 
7.5 
11.4 
4.5 
4.0 
4.0 
2.0 
1.6 
1.6 
7.0 
7.5 



l.i 



4.25 
8.50 
16.90 
25.80 
7.40 
5.24 
5.67 
6.22 
3.48 
6.79 
18.30 
18.80 



10.60 



261 

489 

1,040 

1,540 

455 

312 

349 

382 

207 

418 

1,090 

1,160 



7,700 



HONOPOU STREAM NEAR HUELO, MAUI. 

Location. — About 4 miles southwest of Huelo post office and three-fourths of a mile 
northwest of Lupi. 

Records available.— December 12, 1910, to December 31, 1912. 

Gage. — Vertical staff; read twice daily, about 7 a. m. and 5 p. m.; datum un- 
changed. 

Channel. — Probably permanent. 

Discharge measurements. — Made by wading. 

Accuracy. — Discharge rating not yet available. 

Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 

Discharge measurements of Honopou Stream near Huelo, Maui, in 1912. 
[J. B. Stewart, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Jan. 13 


Feet. 
0.11 

.48 


Sec.-ft 
1.55 
10.4 


July 26 . 


Feet. 
0.10 
.07 


Sec.-ft. 
1.65 


Mar. 12 


Sept. 20 . . 




1 41 









14694°— wsp 336—14- 



-13 



194 



Daily gage height, in feet, of Honopou Stream near Huelo, Maui, Jor 1912. 
[Miyabara, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec, 


1 


0.20 
.20 

.18 
.18 
.16 

.16 
.16 
.15 
.14 
.14 

.12 
.12 
.12 
.12 
.11 

.11 
.10 
.10 
.09 
.08 

.08 
.08 
.08 
.13 
.10 

.10 

.09 
.08 
.08 
.07 
.07 


0.06 
.06 
.06 
.06 
.06 

.05 
.05 
.06 
.12 
.08 

.08 
.08 
.20 
.13 
.09 

.08 
.07 
.06 
.18 
.22 

.32 
.38 
.27 
.24 
.23 

.24 
.45 
.47 
.34 


0.36 
.41 
.40 
.35 
.33 

.32 
.32 
.28 
.33 
.30 

.52 
.44 
.52 
.42 
.38 

.32 
.33 
.50 
.34 
.34 

.30 

.28 
.26 
.24 
.22 

.22 
.21 
.20 
.20 
.22 


. 0.28 

.25 

.34 

1.13 

.83 

.56 
.72 

.78 
.72 
.58 

.52 
.50 
.44 
.50 
.51 

.44 
.40 
.38 
.36 
.41 

,34 
.30 
.34 
.31 
.30 

.34 
.31 
.28 
.28 
.26 


0.24 
.24 
.23 
.28 
.22 

.22 
.20 
.22 
.20 

.18 

.17 
.16 
.16 
.15 
.14 

.13 
.13 
.13 
.13 
.14 

.13 
.12 
.11 
.12 
.10 

.16 
.21 
.18 
.18 
.13 
.14 


0.12 
.11 
.10 
.10 
.10 

.10 
.09 
.09 
.09 
.14 

.12 
.12 
.12 
.11 
.12 

.12 
.10 
.10 
.10 
.10 

.10 
.10 
.09 
.18 
.12 

.11 
.11 
.11 
.10 
.10 


0.10 
.10 
.13 
.17 
.12 

.11 
.12 
.11 
.26 
.12 

.16 
.12 
.12 
.11 
.11 

.11 
.10 
.10 
.10 
.10 

.10 
.09 
.09 
.12 
.12 

.10 

.09 
.11 
.10 

.08 
.08 


0.08 
.07 
.07 
.06 
.06 

.06 
.06 
.06 
.06 
.09 

.14 
.08 
.08 
.10 
.22 

.12 
.08 
.07 
.06 
.06 

.06 
.12 
.06 
.06 
.06 

.05 
.05 
.05 
.06 
.06 
.06 


0.07 
.17 
.11 
.17 
.10 

.10 
.14 
.11 
.10 

.08 

.08 
.07 
.07 
.06 
.06 

.06 
.06 
.06 
.05 
.06 

.05 
.05 
.05 
.05 
.04 

.04 
.04 
.04 
.06 
.10 


0.07 
.10 
.06 
.04 
.04 

.04 
.04 
.04 
.04 
.04 

.04 
.04 
.04 
1.54 
.08 

.06 
.04 
.04 
.04 
.04 

.18 
.21 
.20 
.16 
.14 

.15 
.48 
.52 
.24 
.28 
.41 


0.29 

.24 
.37 
.24 
.20 

.20 
.18 
.16 
.78 
.42 

.36 
.28 
.26 
.24 
.22 

.40 
.45 
.53 

.47 
.39 

.33 
.32 
.30 
.28 
.30 

.28 
.28 
.24 
.21 
.20 


0.24 


2 


.53 


3 


.96 


4 


.55 


5 


.39 


6 


.36 


7 


.37 


8 


.34 


9 


.26 


10 


.28 


11 


.26 


12 


.24 


13 


.22 


14 


.22 


15 


.21 


16 


.21 


17 


.24 


18 


.24 


19 


.38 


20 


.28 


21 


.59 


22 


.66 


23 


.66 


24 


At 


25 


.43 


26 


.40 


27 


.36 


28 


.38 


29 


.36 


30 


.32 


31 


.28 













HALEHAKU STREAM WEIR NEAR HUELO, MAUI. 

Location. — About 7 miles west of Huelo post office and 3 J miles west of Lupi at New 
Hamakua ditch crossing. 

Records available. — January 1, 1910, to December 31, 1912. 

Gage. — Head on weir measured by graduated scale to reference point back of diver- 
sion dam. 

Discharge measurements. — By 6-foot Cippoletti weir. 

Cooperation. — Weir is the property of the East Maui Ditch Co.; discharges copied 
from records of the Maui Agricultural Co. 

Daily discharge, in million gallons, of Halehdku Stream weir near Huelo, Maui, Jor 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


3.33 


0.70 


9.20 


9.90 


5.13 


1.40 


1.30 


0.67 


0.70 


0.60 


7.00 


3.07 


.80 


11.00 


7.50 


4.76 


1.30 


1.20 


.53 


2.47 


1.07 


5.64 


2.90 


.97 


12.00 


9.57 


4.57 


1.20 


1.53 


.70 


2.10 


.60 


5.30 


2.73 


.70 


10.00 


12.80 


5.23 


1.20 


2.90 


.43 


2.13 


.42 


3.93 


2.37 


.65 


8.73 


12.90 


4.86 


1.20 


2.00 


.53 


1.67 


.30 


3.43 


2.33 


.60 


7.83 


12.90 


5.23 


1.20 


1.45 


.53 


1.23 


.30 


3.00 


2.37 


.60 


8.33 


12.90 


3.96 


1.10 


1.30 


.56 


2.40 


.30 


2.80 


2.20 


1.87 


8.27 


12.90 


4.23 


1.20 


1.93 


.41 


1.37 


.30 


3.40 


2.10 


1.50 


9.60 


12.90 


3.56 


1.10 


3.73 


.96 


1.00 


.35 


12.20 


1.90 


.80 


7.63 


12.90 


3.35 


2.77 


2.10 


.80 


.85 


.30 


12.20 


1.83 


1.15 


9.87 


12.90 


3.10 


2.17 


1.90 


1.13 


.80 


.35 


10.20 


1.66 


.97 


12.90 


12.90 


2.95 


2.13 


1.55 


.74 


.73 


.30 


6.93 


1.60 


2.40 


12.80 


12.90 


2.73 


1.52 


1.65 


.70 


.70 


.57 


5.53 


1.60 


1.63 


10.80 


12.90 


2.50 


1.23 


1.50 


.86 


.60 


3.17 


4.73 


1.50 


.80 


9.00 


12.00 


2.40 


1.70 


1.40 


2.13 


.60 


1.37 


4.80 



Dec. 



1 
2 
3 
4 
5 

6 

7 
8 
9 
10 

11 
12 
13 
14 
IS 



4.80 
9.67 
12. 50 
10.50 
8.03 

7.30 
7.97 
5.57 
4.80 
4.30 

3.90 
3.60 
3.40 



ISLAND OF MAUI. 



195 



Daily discharge, in million gallons, of Halehdku Stream weir near Huelo, Maui, for 

1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 


1.40 
1.30 
1.17 
1.15 
1.10 

1.07 
1.00 
1.07 
2.23 
1.10 

1.00 
.95 
.85 
.75 
.70 
.70 


0.70 
.70 
1.03 
4.70 
6.43 

8.70 
12.10 
5.63 
3.77 
3.23 

3.50 
12.20 
12.80 

9.97 


7.83 
7.77 
9.80 
8.40 
7.33 

6.35 
5.60 
5.10 
4.70 
5.13 

5.10 
4.43 
3.90 
3.55 
4.93 
8.33 


11.00 

10.80 
9.83 
8.80 

7.87 

7.00 
6.33 
6.53 
6.07 
6.97 

6.75 
6.50 
6.10 
5.65 
5.57 


2.30 
2.20 
2.20 
2.36 
2.60 

2.00 
1.80 
1.67 
1.58 
1.90 

1.63 
2.23 
3.43 
2.30 
2.13 
1.70 


1.17 
1.22 
1.45 
1.33 

1.92 

1.30 
1.40 
2.43 
1.50 
1.20 

1.20 
1.20 
1.10 
1.10 
1.00 


1.40 
1.30 
1.10 
1.00 
1.00 

1.15 
.97 
1.07 
2.33 
1.40 

1.10 
1.00 
1.05 
1.20 

.75 
.70 


1.00 
.63 
.60 

.58 
.50 

.60 
.95 
.50 
.40 
.40 

.50 
.50 
.43 
.95 
.50 
.53 


0.58 

.50 
.45 
.40 
.45 

.55 
.40 
.40 
.30 
.30 

.35 
.40 
.40 
.73 
2.23 


0.80 
.50 
.30 
.30 
.63 

3.07 
7.40 
4.40 
3.43 
2.40 

2.77 
7.47 
6,97 
4.40 
5.13 
11.90 


10.50 
12.90 
12.90 
.12.90 
11.50 

8.90 
7.62 
6.77 
5.93 
5.17 

5.00 
4.50 
4.10 
3.80 
4.07 


3.60 


17 


4.70 


18 


4.27 


19 


4.97 


20 


3.70 


21 


8.23 


22 


12.60 


23 


12 40 


24 


9.50 


25 


7.60 


26 


9.07 


27 


7.20 


28 


7.43 


29 


5.67 


30 


5.67 


31 


5.07 







Note.— Discharge based on two readings daily. A gage was maintained on crest of wasteway at this 
station to show the amount of water in the stream which was not diverted into the ditch at the weir. 
No discharge over the wasteway except as noted in the following table, showing gage height in feet. 
The zero of the gage is at the same elevation as the crest -of the wasteway. 



Feb. 21 0.15 



Feb. 22 . 
Feb. 27. 
Feb. 28. 
Mar. 3 . . 
Mar. 11 . 
Mar. 12 . 
Mar. 13 . 
Mar. 14 . 
Mar. 18 . 
Mar. 29 . 



.10 
.32 
.26 
-.06 
.18 
.19 
.12 
.04 
.08 
.02 



Apr. 4 54 

Apr.5 48 

Apr.6 25 

Apr.7 26 

Apr.8 34 

Apr. 9 .28 

Apr.10 25 

Apr.ll 16 

Apr.12 11 

Apr.13 09 

Apr.14 21 



Apr. 15 . 
Oct. 31. 
Nov. 9 . 
Nov. 10 . 
Nov. 16 , 
Nov. 18 . 
Nov. 19 . 
Nov. 20 . 
Dec. 3 . . 
Dec. 22 . 



0.10 
.25 
.20 
.20 
.10 
.25 
.20 
.10 
.40 
.15 



Monthly discharge of Halehdku Stream weir near Huelo, Maui, for 1912. 



Month. 



Discharge in million gallons. 



Maximum. Minimum. Mean 



Run-off 
(total in 
million 
gallons) . 



January 

February 

March 

April 

May 

June 

July 

August 

September .... 

October 

November 

December 

The year 



3.33 
12.80 
12.90 
12.90 
5.23 
2.77 
3.73 
2.13 
2.47 
11.90 
12.90 
12.60 



12.90 



0.70 

.60 

3.55 

5.57 

1.58 

1.00 

.70 

.40 

.30 

.30 

2.80 

2.93 



.30 



1.65 
3.50 
7.94 
9.75 
2.99 
1.43 
1.48 
.69 
.93 
2.33 
6.92 
6.60 



3.84 



51.0 
102.0 
246.0 
293.0 
92.6 
42.9 
46.0 
21.2 
27.8 
72.2 
208.0 
205.0 



1, 410. 



196 



WATER RESOURCES OF HAWAII, 1912. 
OPANA STREAM NEAR HUELO, MAUI. 



Location. — About 8 miles west of Huelo, 4J miles west of Lupi, and one-half mile 

from intake of Opana ditch. 
Records available.— December 13, 1910, to December 31, 1912. 
Gage.— Inclined staff; read twice daily, about 7 a. m. and 4.30 p. m.; datum 

unchanged. 
Channel. — Probably permanent. 
Discharge measurements. — Made by wading and from bridge. 

The following discharge measurement was made by J. B. Stewart: 
January 12, 1912: Gage height, 1.40 feet; discharge, 0.75 second-foot. 

Daily gage height, in feet, of Opana Stream near Huelo, Maui, for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


1.48 


1.35 


1.60 


1.98 


1.52 


1.45 


1.33 


1.22 


0.85 


0.01 


1.80 


L48 


1.35 


1.99 


1.56 


1.52 


1.41 


1.32 


1.19 


.95 


.01 


1.55 


1.48 


1.34 


2.14 


1.56 


1.52 


1.41 


1.33 


1.20 


1.41 


.00 


1.50 


1.48 


1.34 


1.60 


3.04 


1.51 


1.41 


1.40 


1.19 


1.42 


.00 


1.50 


1.47 


1.34 


1.59 


3.42 


1.50 


1.41 


1.40 


1.13 


1.42 


.00 


1.45 


1.48 


1.34 


1.62 


1.92 


1.50 


1.40 


1.40 


1.12 


1.32 


.00 


1.40 


1.48 


1.34 


1.60 


2.28 


1.50 


1.40 


1.36 


1.12 


1.40 


.00 


1.40 


1.47 


1.41 


1.62 


2.71 


1.50 


1.40 


1.34 


1.10 


1.48 


.00 


1.40 


1.47 


1.42 


1.60 


2.32 


1.50 


1.40 


1.45 


1.12 


1.38 


.00 


4.30 


1.27 


1.39 


1.60 


2.08 


1.50 


1.44 


1.39 


1.12 


1.28 




2.30 


1.46 


1.38 


1.74 


1.58 


1.49 


1.44 


1.36 


1.14 


1.21 




1.70 


1.45 


1.38 


2.10 


1.56 


1.48 


1.40 


1,34 


1.10 


1.17 




1.55 


1.42 


1.42 


1.60 


1.56 


1.47 


1.42 


1.31 


1.10 


1.14 




1.50 


1.42 


1.40 


1.60 


1.82 


1.46 


1.40 


1,30 


1.10 


1.08 


1.80 


1.50 


1.38 


1.37 


1.58 


1.57 


1.45 


1.40 


1.30 


1.18 


1.04 


1.55 


1.50 


1.39 


1.36 


1.54 


1.57 


1.45 


1.37 


1.26 


1.31 


1.02 


1.35 


2.10 


1.38 


1.35 


1.54 


1.56 


1.45 


'1.36 


1.26 


1.29 


.99 


1.25 


2.80 


1.38 


1.34 


1.60 


1.56 


1.45. 


1.36 


1.-24 


1.22 


.98 


1.10 


2.20 


1.38 


1.48 


1.56 


1.55 


1.45 


1.34 


1.23 


1.16 


.94 


1.00 


2.25 


1.37 


1.52 


1.56 


1.54 


1.48 


1.38 


1.22 


1.12 


.92 


.91 


1.70 


1.37 


2.70 


1.54 


1.53 


1.47 


1.36 


1.21 


1.08 


.92 


.95 


1.70 


1.37 


2.21 


1.53 


1.53 


1.42 


1.36 


1.20 


1.13 


.82 


2.20 


1.60 


1.37 


1.58 


1.53 


. 1.52 


1.41 


1.35 


1.18 


1.05 


.70 


1.80 


1.60 


1.42 


1.50 


1.53 


1.52 


1.44 


1.44 


1.18 


1.02 


.59 


1.70 


1.60 


1.40 


1.44 


1.53 


1.53 


1.42 


1.42 


1.28 


1.01 


.46 


1.55 


1.45 


1.39 


1.39 


1.54 


1.54 


1.45 


1.38 


1.30 


.96 


.33 


1.50 


1.50 


1.34 


2.88 


1.53 


1.54 


1.49 


1.35 


1.29 


.95 


.22 


1.70 


1.50 


1.36 


2.65 


1.52 


1.52 


1.46 


1.34 


1.30 


.92 


.05 


1.80 


1.50 


1.36 


1:81 


1.52 


1.52 


1.47 


1.33 


1.24 


.92 


.01 


1.65 


1.50 


1.35 




1.96 


1.52 


1.45 


1.32 


1.24 


.90 


.14 


1.50 


1.55 


1.35 




2.53 




1.44 




1.23 


.85 




3.75 





Dec. 



1 

2 
3 
4 
5 

6 

7. 
8 
9 
10 

11 
12 
13 
14 
15 

16 

17. 
18. 

19 

20. 

21. 
22. 
23 
24. 
25, 

20. 
27. 
28 
29 
30 
31. 



1.60 
1.75 
2.75 
1.90 
1.60 

1.60 
1.60 
1.55 
1.50 
1.65 

1.50 
1.50 
1.50 
1.50 
1.50 

1.65 
1.65 
1.65 
1.65 
1.60 

1.75 
2.20 
1.75 
1.66 
1.60 

1.74 
1.72 
1.56 
1.59 
1.53 
1.51 



OPANA DITCH NEAR HITELO, MAUI. 

Location. — About 8 \ miles west of Huelo by trail, 5 miles west of Lupi, and about 

half a mile below ditch intake. • 
Records available. — January 1, 1910, to December 31, 1912. 

Gage. — Head on weir measured by graduated scale on reference point in weir pool. 
Discharge measurements. — By 6-foot Cippoletti weir. 
Cooperation. — Records are copies from office of Maui Agricultural Co., but weir is 

the property of East Maui Ditch Co. 

The following discharge measurement was made by J. B. Stewart: 

January 12, 1912: Gage height, 1 inch (head on weir).; discharge, 0.58 second-foot. 



ISLAND OP MAUI. 197 

Daily discharge, in million gallons, of Opana ditch near Huelo, Maui, for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1 
2 
3 
4 
5 

6 
7. 
8 
9 
10 

11. 

12 
13. 
14 
15. 

16. 
17. 
18. 
19. 
20. 

21. 
22. 
23. 
24, 
25. 

26. 
Z7. 
g8. 

29. 
30. 
31. 



0.87 
.80 
.90 
.87 
.70 

.73 
.60 
.43 
.40 

.37 

.23 
.20 
.16 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.20 
.80 
.23 

.15 
.10 
.10 
.10 
.10 
.10 



0.10 
.10 
.10 
.05 
.05 

(a) 

(«) 

(a) 

.53 
.20 



.17 
.37 
.40 
.20 

.10 

.10 

(a) 

1.73 

4.37 

14.60 
12.70 
5.07 
2.07 



1.20 
13.90 
15.40 

8.33 



8.77 
12.60 
14.30 
9.30 
7.05 

7.80 
8.73 
8.67 
6.37 
6.53 

8.23 
12.30 
8.90 
7.40 
6.30 

3.57 
3.10 
4.90 
2.13 
2.00 

1.50 
1.35 
2.20 
2.00 
1.10 

1.40 

.90 

.70 

.70 

8.70 

13.30 



11.70 
8.63 
10.60 
16.80 
15.40 

12.70 
12.60 
14.00 
14.90 
12.60 

9.60 
7.57 
7.30 
11.70 
9.33 

10.00 
9.23 
9.15 
7.13 
4.00 

3.43 
2.40 
2.10 
1.70 
2.67 

4.40 
2.40 
1.55 
1.45 
1.40 



1.30 
1.33 
1.16 
1.53 
1.50 

1.12 
.90 

.89 
.70 
.60 

.60 
.50 
.40 
.40 
.40 

.30 
.20 
.30 
.30 
.35 



.20 
.20 
.30 
.20 



1.13 
.60 
.40 
.15 
.10 



0.0 
.0 
.15 
.50 
.30 

.15 
.10 
.20 
1.27 
.20 

.10 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
fa) 

( a ) - 

(a) 

(a) 
(a) 
(a) 
(a) 
(a) 
(a) 



(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 

0.05 

4.27 

(a) 

(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

.77 
9.03 
3.03 

.03 
(a) 

(a) 

2.40 

3.33 

.70 

.76 

13.20 



5.20 
.93 

.17 
(a) 
(a) 

(a) 
(a) 
1.20 
15.40 
8.90 



5.37 

1.63 

.50 

.30 

.50 

6.20 
9.33 
7.50 
7.50 
5.93 

5.37 
4.43 
1.73 

.90 
.83 

.60 
.40 
.39 
.33 
.40 



1.27 
5.07 
8.30 
4.13 
2.10 



1.43 

1.47 

.93 

.67 

.50 

.40 
.37 
.27 
.40 
.40 

.93 
1.40 
.90 
.93 
.63 

1.30 
6.13 
6.03 
2.43 

1.77 

6.17 
6.10 
3.23 
1.60 
1.07 



a Channel dry. 
Monthly discharge of Opana ditch near Huelo, Maui, for 1912. 



Month. 


Discharge in million 


gallons. 


Run-off 
(total in 


Maximum. 


Minimum. 


Mean. 


million 
gallons). 


January 


0.90 
15.40 
14.30 
16.80 

1.53 
.70 

1.27 


0.10 
.05 
.70 

1.40 
.10 
.10 
.10 


0.32 

3.31 

5.90 

7.95 

.61 

.20 

.33 


10 00 


February 


82 80 


March. 


183 00 


April 


238 00 


May 


18 90 


June 


4 68 


July 


2 97 


August 


00 


September 








00 


October 


13.20 
15.40 
8.30 


.03 
.17 
.27 


2.96 
3.54 
2.23 


32 60 


November 


91.90 
69 30 


December 






The period 






2.95 


734 00 











198 



WATER RESOURCES OF HAWAII, 1912. 



NEW HAMAKUA DITCH AT NAILIILIHAELE WEIR, NEAR HUELO, MAUI. 

Location. — About 2 miles by trail south of Huelo post office, just before crossing of 

Nailiilihaele Stream. 
Records available. — January 1, 1910, to December 31, 1912. 
Gage. — A Friez automatic register. 

Discharge measurements. — By 17-foot Cippoletti weir. 
Cooperation. — Weir is property of East Maui Ditch Co. Discharge copied from 

records of Maui Agricultural Co. 

Daily discharge, in million gallons, of New Hamakua ditch at Nailiilihaele weir, near 

Huelo, Maui, for 1912.. 



Day. 



1. 
2. 
3. 
4. 
5. 

6. 

7. 
8. 
9. 
10 

11. 

12. 
13. 
14 
15 

16 
17 
18. 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



Jan. 



32.80 
34.80 
31.30 
36.10 
26.00 

24.00 
22.70 
23.60 
22.40 
20.00 

18.60 
17.90 
17.30 
16.70 
15.90 

15.00 
14.40 
13.90 
13.20 
12.40 

12.10 
11.20 
11.10 
12.00 
11.00 

10.10 
9.73 
9.60 
9.17 
8.83 
9.00 



Feb. 



9.12 

8.70 
8.52 
8.23 

7.85 

7.60 

7.43 

14.80 

26.60 

11.10 

9.80 

9.66 

31.90 

17.90 

12.50 

11.10 

10.60 
9.73 
27.40 
54.70 

55.60 
55.20 
54.70 
48.30 
41.90 

40.80 
56.00 
55.80 
55.40 



Mar. 



55.6 
56.2 
56.0 
55.1 
54.6 

54.6 

55.8 
54.8 
54.6 
55.0 

56.6 
57.0 
56.7 
55.7 
53.7 

49.3 
50.0 
55.1 
51.4 
52.3 

48.3 
41.8 
38.9 
35.9 
51.8 

56.2 
55.6 
51.4 
34.8 
50.9 
56.3 



Apr. 



56.4 
55.6 
56.2 
58.3 

57.7 

57.5 
57.6 
57.4 
57.0 
57.2 

56.8 
57.1 
56.5 
57.1 
56.5 

56.5 
56.4 
55.1 
54.2 
54.7 

54.5 
54.2 
53.2 
52.3 
54.5 

55.2 
55.0 
50.0 
44.4 
42.0 



May. 



38.0 
39.0 
39.7 
50.8 
53.0 

48.0 
39.8 
47.4 
37.2 
32.9 

30.2 
28.0 
26.2 
26.0 
23.2 

21.7 
20.6 
20.0 
20.4 
22.6 

21.6 

18.0 
16.5 
18.0 
15.8 

25.4 
40.6 
26.4 
23.6 
19.8 
18.1 



June. 



16.8 
15.5 
14.8 
14.2 
13.6 

12.6 
13.0 
16.4 
14.7 
29.6 

36.5 
24.4 
24.5 
20.4 
17.9 

19.0 
16.4 
15.0 
19.8 
17.4 

24.8 
18.5 
16.3 
34.0 
21.0 

17.4 
16.4 
15.1 
13.9 
13.0 



July. 



14.1 
15.2 
17.3 
22.4 
19.7 

16.4 
15.3 
22.1 
39.8 
24.6 

23.8 
21.2 
24.5 
21.3 
17.7 

16.2 
14.9 
14.0 
12.9 
12.0 

11.6 

12.2 
10.4 
15.0 
13.4 

12.4 
13.5 
-14.3 
15.9 
12.7 
11.2 



Aug. 



10.50 
10.10 
10.60 
9.66 



8.26 
8.50 
8.01 
11.90 
12.30 

23.70 
20.60 
18.90 
26.00 
43.90 

30.70 
21.30 
18.50 
20.20 
16.20 

15.00 
21.90 
16.30 
14.00 
12.50 

13.20 
14.40 
13.20 
17.00 
14.20 
17.60 



Sept. 



18.20 
45.40 
48.60 
46.90 
34.70 

40.20 
53.90 
38.00 
29.70 
25.70 

23.00 
21.20 
19.60 
16.90 
14.90 

14.00 
12.70 
12.20 
11.90 
11.80 

10.90 
9.97 
9.33 

8.80 
8.57 



7.90 

7.70 

11.20 

33.80 



Oct.. 



16.7 
22.2 
16.9 
12.2 
10.7 

10.0 
10.1 
10.6 
18.4 
15.9 

13.8 
16.1 
20.8 
51.4 
38.0 

25.4 
21.2 
17.8 
16.2 
20.2 

50.4 
55.8 
55.4 
53.8 
43.9 

45.1 
56.1 
56.4 
53.4 
55.0 
56.4 



Nov. 



52.8 
48.7 
54.0 
45.4 
34.6 

30.2 
30.4 
31.1 
56.8 
56.0 

54.4 
48.9 
40.6 
36.3 
36.2 

55.9 
56.0 
56.5 
55.9 
55.5 

54.7 
55.0 
54.2 
49.4 
50.9 

48.0 
43.7 
41.2 
37.2 
38.0 



Dec. 



53.9 
60.1 
62.2 
56.9 
56.7 

55:0 
53.7 
47.9 
42.7 
39.4 

35.1 

32.4 
30.7 
31.7 
30.5 

44.2 
35.0 
49.1 
53.1 
45.7 

45.8 
46.1 
46.6 
46.2 
46.2 

46.5 
46.3 
46.1 
45.4 
45.8 
45.0 



Monthly discharge of New Hamakua ditch at Nailiilihaele weir, near Huelo, Maui, for 

1912. 



Month. 



Discharge in million gallons. 



Maximum. 



Minimum. 



Mean. 



Run-off 
(total in 
million 
gallons). 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



36.1 
56.0 
57.0 
58.3 
53.0 
36.5 
39.8 
43.9 
53,9 
56.4 
56.8 
62.2 



8.83 

7.43 

34.80 

42.00 

15.80 

12.60 

10.40 

8.01 

7.70 

10.00 

30.20 

30.50 



62.2 



7.43 



17.5 
26.5 
52.0 
54.9 
29.3 
18.8 
17.0 
16.4 
18.8 
31.2 
47.0 
45.9 



31.4 



543 

769 

1,610 

1, 650 

908 

563 

528 

508 

656 

966 

1,410 

1,420 



11,500 



ISLAND OF MAUI. 



199 



NEW HAMAKUA DITCH AT HALEHAKU WEIR, NEAR HTJELO, MAUI. 

Location. — About 7 miles west of Huelo post office, 3£ miles west of Lupi, and 

just above crossing of Halehaku Stream. 
Records available. — January 1, 1910, to December 31, 1912. 
Gage. — Friez clock register. 

Discharge measurements. — By 25-foot Cippoletti weir. 
Channel. — No velocity of approach; conditions good. 
Cooperation. — Weir is property of East Maui Ditch Co.; discharge copied from 

records of Maui Agricultural Co. 

Daily discharge, in million gallons, of New Hamakua ditch at Halehaku weir, near Huelo, 

Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


54.1 
54.5 
53.5 
44.3 
48.9 

46.1 
44.4 
46.8 
44.2 
39.3 

37.2 
35.5 
34.6 
33.3 
31.8 

30.6 
29.5 
28.4 
27.3 
26.0 

25.0 
23.4 
23.5 
29.3 
25.6 

22.7 
21.5 
20.7 
19.8 
19.0 
20.1 


19.7 
18.3 
18.7 
17.9 
16.7 

16.2 
15.7 
19.4 
44.5 
24.4 

26.9 
23.4 
54.4 
44.9 
30.6 

26.6 

24.5 
22.3 
48.2 
54.2 

53.7 
52.6 
54.4 
54.7 
52.9 

52.4 
54.1 
53.6 
54.7 


55.8 
53.7 
54.0 
54.2 
53.9 

54.0 

56.3 
55.5 
56.4 
56.7 

56.0 
42.3 
47.0 
54.5 
55.9 

58.2 
59.0 
56.2 
57.4 
59.2 

58.9 
57.2 
61.8 
57.9 
59.8 

60.3 

59.5 
58.2 
55.4 
55.0 
54.8 


55.2 
54.6 
56.1 
55.5 
55.4 

55.0 

55.6 
55.2 
54.4 
55.0 

55.2 
55.3 
55.7 
56.2 
55.8 

55.9 

55.6 
56.3 
59.8 

58.7 

57.4 
57.6 
55.4 
53.1 
54.3 

54.8 
54.1 
54.0 
53.2 
52.5 


51.6 
50.1 
49.6 
54.5 
55.7 

55.7 
53.3 
53.6 
53.9 
50.9 

54.5 
51.9 
48.9 
46.7 
42.3 

40.0 
37.7 

36.8 
36.8 
40.6 

36.8 
32.3 
29.8 
35.0 
30.0 

44.0 
55.1 
50.0 
48.4 
43.0 
40.6 


35.8 
33.1 
31.1 
29.2 
28.0 

26.4 
26.4 
29.6 
27.6 
46.0 

54.2 
44.6 
51.1 
45.3 
43.3 

43.4 
37.3 
34.0 
40.0 
37.4 

49.8 
41.0 
36.8 
53.8 
43.4 

38.1 
37.0 
35.2 
31.8 
29.9 


32.2 
36.4 
42.9 
55.7 
49.5 

40.2 
36.0 
37.6 
56.7 
50.1 

54.3 
47.1 

50.6 
48.1 
40.7 

37.6 
34.5 
32.2 
30.3 
28.8 

30.4 
27.5 
25.8 
40.2 
36.1 

31.3 
31.0 
31.6 
35.0 
29.8 
26.2 


24.5 
23.5 
. 24.0 
22.6 
21.1 

20.1 
21.6 
20.9 
33.0 
30.3 

48.1 
40.8 
37.1 
41.1 
61.6 

52.7 
41.3 
36.6 
36.6 
31.6 

29.3 
42.5 
32.5 
27.6 
25.3 

26.1 
27.2 
25.6 
34.4 
39.1 
32.7 


32.8 
58.7 
54.1 
57.1 
52.9 

54.9 
61.1 
57.7 
50.2 
43.2 

38.8 
35.9 
33.2 
30.1 
29.1 

27.5 
26.9 
25.2 
24.2 
24.3 

22.6 
21.2 
19.9 

18.7 
18.4 

17.9 
17.2 
17.1 
21.6 
58.8 


35.3 
42.2 
38.3 
25.8 
22.2 

20.6 
21.0 
20.9 
27.6 
27.6 

23.2 

26.6 
32.2 
59.8 
56.7 

45.2 
41.9 
31.3 
28.2 
.30.9 

59.5 
60.8 
62.7 
60.2 
62.1 

64.8 
63.0 
49.6 
60.0 
59.5 
68.9 


61.1 
59.4 
61.3 
55.6 
54.7 

58.0 
57.2 
56.8 
78.9 
59.4 

57.6 
58.0 
59.4 
58.0 
58.8 

77.1 
66.8 
62.1 
61.8 
60.3 

60.1 
59.8 
59.5 
58.5 
58.9 

58.7 
58.6 
57.8 
57.0 
57.8 


61.9 


2 


64.3 


3 


45.2 


4 


52.4 


5 


60.8 


6 


59.3 


7 


59.6 


8 


59.2 


9 


57.7 


10 


56.7 


11 


55.5 


12 


57.5 


13 


55.7 


14 


58.1 


15 


57.2 


16 . 


61.2 


17 


62.2 


18 


63.5 


19 


61.7 


20 


59.2 


21 


63.2 


22 


60.6 


23 


65.5 


24 


59.4 


25 


58.7 


26 


59.2 


27 


58.6 


28 


58.3 


29 


57.4 




57.8 


31 


57.9 







Monthly discharge of New Hamakua ditch at Halehaku weir, near Huelo, Maui, for 1912. 



Month. 


Discharge in million gallons. 


Run-ofl 
(total in 


Maximum. 


Minimum. 


Mean. 


million 
gallons). 


January 


54.5 
54.7 
61.8 
59.8 
55.7 
54.2 
56.7 
61.6 
61.1 
68.9 
78.9 
65.5 


19.0 
15.7 
42.3 
52.5 
29.8 
26.4 
25.8 
20.1 
17.1 
20.6 
54.7 
45.2 


33.6 
36.2 
56.0 
55.4 
45.5 
38.0 
38.3 
32.6 
35.0 
42.9 
60.3 
58.9 


1,040 


February 


1,050 
1,740 


March 


April 


1, 660 


May 


1,410 


June 


1,140 


July 


1,190 


August 


1,010 


September ." 


1,050 


OctoDer 


1,330 


Novemoer 


1,810 


Decemoer 


1,830 






The year 


78.9 


15.7 


44.4 


16, 300 







200 



WATER RESOURCES OF HAWAII, 1912. 



NEW HAMAKUA DITCH AT STATION NO. 1, NEAR HUELO, MAUI. 

Location. — About 1J miles south from Huelo post office at lower portal of first tunnel 

west of Nailiilihaele Stream. 
Records available. — July 25 to December 31, 1912. 
Gage. — A reference point, on top of cement-lined ditch, from which measurement 

is made to surface of water; observations made twice daily, at 5.30 a. m. and 5.30 

p. m.; datum unchanged. 
Channel. — Permanent . 

Discharge measurements. — Made from plank over ditch. 
Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 

Discharge measurements of New Hamahua ditch at station No. linear Huelo, Maui, in 

1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Sept. 21 
Nov 11 


J. B. Stewart 


Feet. 
2.78 
.12 


Sec.-ft. 
24 4 


do 


94.8 







Daily gage height, in feet, of New Hamakua ditch at station No. 1, near Huelo, Maui, for 

1912. 



Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


V 

Dec. 


1 




2.82 

2.88 
2.75 
2.90 
3.00 

3.50 
2.98 
3.25 
2.25 
2.25 

1.25 
1.35 
1.88 
1.68 
.60 


2.20 
1.95 
3.25 
1.10 
1.10 

.80 
.25 

1.10 
.92 

1.72 

1.95 
2.08 
2.25 
2.35 
2.42 


1.30 
1.45 
2.15 
2.65 
2.85 

2.91 
2.90 
2.95 
2.35 
2.22 

2.75 
3.55 
2.65 
1.00 
.90 


0.10 
.10 
.10 
.20 
.40 

1.25 

1.25 

1.30 

.10 

.10 

.10 
.10 
.50 
.80 
1.05 


0.15 
.10 
.15 
.10 
.10 

.15 
.20 
.40 
.50 
.55 

.85 
1.05 
1.10 
1.30 
1.00 


16 




1.32 
1.82 
2.02 
2.22 
2.38 

2.48 
2.22 
2.35 
2.52 
2.65 

2.58 
2.52 
2.65 
2.00 
2.10 
2.12 


2.50 
2.55 
2.70 
2.70 
2.75 

2.80 
2.85 
2.95 
3.00 
3.50 

3.10 
3.12 
3.10 
3,05 
1.60 


1.46 
2.05 
2.30 
2.50 
2.45 

.10 
.10 
.10 
.10 
.20 

.35 
.10 
.10 
.10 
.10 
.10 


0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.15 

.20 
.35 
.45 
.65 
.40 


1.15 


2 .. 




17 




.25 


3... 




18 




.12 


4 




19 




.25 


5 




20 




.10 


6 




21 




.20 


7 




22 




.25 


8 




23 




.70 


9 . 




24 




.85 


10 




25 


2.20 

2.52 
2.38 
2.35 
2.10 
2.52 
2.65 


.55 


11 




26 


.50 


12 




27 


.45 


13 




28 


.35 


14 .. 




29 


.40 


15 




30 


.40 






31 


.45 









NEW HAMAKUA DITCH AT STATION NO. 2, NEAR HUELO, MAUI. 

Location. — About 1£ miles south of Huelo post office at upper end of iron flume 

crossing Kailua Stream. 
Records available. — January 14 to December 31, 1912. 
Gage. — A reference point on top of cement-lined ditch, from which measurements 

are made to surface of water twice daily, at 6.30 a. m. and 4.30 p. m.; datum 

unchanged. 
Channel. — Permanent. 

Discharge measurements. — Made from flume covering. 
Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 



ISLAND OF MAUI. 



201 



Daily gage height, in feet, of New Hamakua ditch at station No. 2, near Huelo, Maui, for 

1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




3.00 
3.06 
3.05 
3.11 
3.14 

3.20 
3.21 
3.16 
1.20 
2.74 

2.42 
2.79 
.44 
1.48 
2.37 

2.61 

2.72 

2.32 

.70 

.05 

.06 
.10 
.12 
.12 
.14 

.48 
.04 
.12 
.12 


0.08 

.06 

.06 

. .10 

.12 

.10 
.08 
.10 
.09 
.05 

.06 
.04 
. .08 
.10 
.12 

.14 
.08 
.08 
.13 
.14 

.15 

.18 
.22 
.44 
.03 

.00 
.02 
.06 

.58 
.02 
.06 


0.04 
.09 
.03 
.03 
.04 

.06 
.09 
.08 
.08 
.04 

.09 
.08 
.08 
.08 
.11 

.08 
.13 
.14 
.10 
.07 

.14 
.11 
.12 
.19 
.10 

.08 
.10 
.15 
.14 
.27 


0.36 
.20 
.25 
.18 
.14 

.20 
.30 

.28 
.28 
.57 

.91 

.15 

1.28 

1.30 

1.62 

1.72 
1.60 
1.91 

1.85 
1.78 

1.80 
2.08 
2.25 
2.T0 
2.22 

1.28 
1.38 
1.08 
.95 
1.55 
1.55 


2.25 
2.18 
2.28 
2.35 
2.42 

2.52 

2.45 
2.40 
2.38 
1.15 

.68 
1.50 
1.40 
1.35 
1.48 

1.28 

1.78 
2.00 

1.48 
1.88 

1.65 
1.62 
1.95 
2.12 
1.52 

1.80 
1.98 
2.00 
1.78 
1.80 


2.22 
1.75 
1.22 
.80 
1.18 

1.68 
1.88 
1.68 
.38 
1.02 

.92 
1.50 

1.02 
1.58 

1.78 

2.02 
2.30 
2.18 
2.32 
2.25 

2.38 

2.48 

.95 

2.02 

1.95 

2.22 

1.78 
1.82 
1.72 
1.78 
1.82 


2.25 
2.30 
2.32 
2.58 
2.62 

2.72 

2.78 
2.88 
2.68 
2.60 

.78 

1.32 

1.42 

.55 

.38 

.62 

.82 

1.22 

1.12 

1.22 

1.38 
1.32 
1.42 
1.58 
2.05 

2.32 
2.32 
2.42 
1.62 
2.02 
2.05 


1.98 

1.50 

.18 

.12 

.72 

.48 

.15 

.45 

1.48 

1.42 

1.62 
1.80 
1.88 
1.78 
2.12 

2.32 

2.85 
2.45 
2.55 
2.50 

2.58 
2.62 
2.80 
2.82 
2.90 

2.85 
2.90 
2.92 

2.88 
.50 


1.52 
1.45 
1.71 
2.21 
2.11 

2.81 
2.90 
2.81 
2.45 
2.35 

2.65 

2.40 

2.20 

.20 

.25 

1.32 
1.70 
2.05 
2.30 
2.15 

.20 
.20 
.20 
.15 
.10 

.20 
.10 
.10 
.20 
.20 
.20 


0.20 
.20 
.20 
.30 
.30 

1.00 

.85 

1.00 

.20 

.20 

.20 
.20 
.30 
.40 

.75 

.15 
.10 
.10 
.10 
.10 

.15 
.15 
.20 
.20 
.20 

.20 
.30 
.30 
.45 
.50 


0.15 


2 




.10 


3 




.15 


4 




.10 


5 




.10 


6 




.15 


7 




.20 


8 




.25 


9 




.30 


10 




.35 


11 




.50 


12 




.65 


13 




.85 


14 


2.26 
2.34 

2.42 
2.48 
2.55 
2.60 
2.67 

2.72 
2.75 
2.80 
2.39 
, 2.66- 

2.82 
2.88 
2.96 
2.99 
3.02 
2.95 


.75 


15 


.85 


16 


.10 


17 


.85 


18 


.25 


19 


.20 


20 


.35 


21 


.45 


22 


.50 


23 


.60 


24 


.50 


25 


.45 


26..... 


.35 


27 


.35 


28 


.20 


29 


.30 




.25 


31 


.25 







NEW HAMAKUA DITCH AT STATION NO. 3, NEAR HTTELO, MAUI. 

Location. — About 1J miles south of Huelo post office, at lower end of iron flume 
crossing Kailua Stream. 

Records available. — January 14 to December 31, 1912. 

Gage. — A reference point, on top of cement-lined ditch, from which distance to 
water surface is measured twice daily, at 6.30 a. m. and 4.30 p. m.; datum 
unchanged. 

Channel . — Permanent . 

Discharge measurements.— Made from plank over ditch. During low stages the 
flow at station No. 2 is the same as that of No. 3. During high stages, in order to 
determine the amount of water overflowing the sides of the iron flume and drop- 
ping into Kailua Stream, it is necessary to measure the ditch above and below 
this flume. 

Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 



Discharge measurements of New Hamakua ditch at station No. 

1912. 



near Huelo, Maui, in 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 23 


J. B. Stewart 


Feet. 
2.57 
2.69 
a. 20 


Sec.-ft. 
25.3 


Sept. 21 


do 


23.5 


Nov. 11 


do 


86.2 









a Gage-height reference mark. 



202 



WATEE RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, of New Hamakua ditch at station No. 3, near Huelo, Maui, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




3.04 
3.11 
3.09 
3.12 
3.18 

3.23 
3.25 
3.20 
1.25 
2.75 

2.46 
2.83 
.46 
1.51 
2.40 

2.64 
2.76 

2.86 
.72 
.08 

.10 
.14 
.16 
.16 
.18 

.50 
.07 
.14 
.16 


0.10 
.10 
.08 
.12 
.15 

.14 
.12 
.14 
.11 
.08 

.09 
.07 
.10 
.12 
.14 

.16 
.10 
.10 
.16 
.16 

.18 
.20 
.25 
.47 
.06 

.00 
.05 
.08 
.62 
.04 
.10 


0.08 
.12 
.06 
.05 
.07 

.08 
.12 
.12 
.12 
.06 

.12 
.10 
.12 
.10 
.14 

.11 
.16 
.16 
.12 
.10 

.16 
.14 
.14 
.22 
.12 

.10 
.14 
.18 
.18 
.28 


0.31 
.26 
.24 
.14 
.15 

.21 
.35 
.29 
.28 
1.64 

1.28 
1.20 
1.32 
1.35 
1.61 

1.72 
1.78 
1.80 
1.78 
1.88 

1.88 
2.18 
1.92 
2.02 
2.32 

1.68 

1.52 

.88 

.50 

.34 

1.72 


1.98 
2.12 
2.25 
2.30 
2.38 

2.48 
2.45 
2.30 
2.42 
2.10 

2.08- 

1.55 

1.40 

1.40 

1.58 

1.35 
1.83 
2.05 
1.52 
1.95 

.80 
1.68 
2.00 

.82 
1.58 

1.85 
2.02 
2.05 
2.30 
2.32 


2.08 
1.80 
1.35 

L22 

1.72 
1.98 
1.72 
.42 
1.08 

.98 
1.55 
1.08 
1.65 

1.82 

2.25 
2.12 
2.25 
2.52 
2.22 

1.82 
2.42 
2.52 
1.00 
1.72 

4.68 
1.85 
1.90 
1.82 
1.88 
1.98 


2.30 

2.18 
2.32 
2.62 
2.68 

2.78 
2.88 
2.98 
2.72 
2.78 

.82 
1.38 
1.52 

.62 

.48 

.70 

.88 

1.30 

1.32 

1.30 

1.42 
1.42 
1.52 
1.62 
2.08 

2.38 
2.38 
2.48 
1.68 
2.12 
2.12 


1.09 
.75 
.30 
.18 
.80 

.52 
.18 
.48 
1.98 
.95 

1.68 
1.85 
1.92 
1.80 
2.18 

2.35 
2.38 
2.52 
2.55 
2.55 

2.62 

2.78 
2.82 
2.88 
2.90 

2.90 
2.95 
2.98 
2.95 
.55 


1.60 
2.25 
1.80 
2.50 
2.36 

2.91 
2.92 
2.85 
2.90 
2.85 

2.70 

2.60 

2.20 

.20 

.25 

1.32 
1.75 
2.05 
2.30 
2.25 

.20 
.20 
.20 
.20 
.20 

.15 
.10 
.10 
.20 
.20 
.20 


0.20 
.20 
.20 
.30 
.60 

1.00 
.85 

1.00 
.20 
.20 

.20 
.20 
.30 
.40 

.75 

.15 
.10 
.10 
.10 
.10 

.15 
.20 
.20 
.20 
.20 

.20 
.30 
.30 
.55 
.60 


0.15 


2 




.10 


3 




.15 


4 




.10 


5 




.20 


6 




.25 


7 




.20 


8 , 




.30 


9 




.'40 


10 




.35 


11 




.60 


12.... 




.85 


13 




.75 


14 


2.30 
2.38 

2.48 
2.51 
2.57 
2.62- 
2.70 

2.72 
2.78 
2.80 
2 42 
2.68 

2.84 
2.92 
2.98 
3.02 
3.05 
2.98 


.85 


15 


.20 


16 


.85 


17 


.85 


18 


.30 


19 .... ., 


.30 


20 


.45 


21 


.45 


22 


.50 


23... 


.50 


24 


.50 


25 


.50 


26 


.35 


27 


.35 


28 


.20 


29 


.30 


30... 


.25 


31... 


.35 







NEW HAMAKUA DITCH AT STATION NO. 4, NEAR HUELO, MAUI. 

Location. — About 1^ miles south of Huelo post office and immediately above flume 

crossing Oanui Gulch. 
Records available. — January 14 to December 31, 1912. 
Gage. — A reference point, chiseled in cement lining of ditch, from which distance 

to water surface is measured twice daily, at 6.30 a. m. and 4.30 p. m.; datum 

unchanged. 
Discharge measurements. — Made from plank over flume. The difference 

between the flow at stations No. 4 and No. 3 gives low-water flow of Kailua 

Stream. 
Cooperation. — Station maintained in cooperation with East Maui Ditch Co. 

Discharge measurements of New Hamakua ditch at station No. 4, near Huelo, Maui, in 

1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 23 


J. B. Stewart 


Feet. 
4.90 
2.52 


Sec.-ft. 
29.7 


Nov. 11 


do.. 


86.2 









ISLAND OF MAUI. 



203 



Daily gage height, in feet, of New Hamahua ditch at station No. 4, near Huelo, Maui, for 

1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




5.42 
5.50 
5.47 
5.50 
5.56 

5.55 
5.58 
5.52 
3.66 
5.14 

4.84 
5.20 
2.90 
3.92 

4.78 

5.15 
5.12 
5.22 
3.18 
2.50 

2.56 
2.64 
2.60 
2.60 
2.18 

2.98 
2.54 
2.62 
2.58 


2.52 
2.50 
2.48 
2.55 
2.64 

2.56 
2.54 
2.56 
2.52 
2.54 

2.52 
2.51 
2.58 
2.61 
2.60 

2.66 
2.58 
2.56 
2.60 

2.58 

2.62 
2.64 
2.70 
2.91 
2.51 

2.46 
2.50 
2.54 
3.07 
2.51 
2.54 


2.48 
2.54 
2.46 
2.48 
2.48 

2.48 
2.58 
2.54 
2.55 
2.42 

2.52 
2.52 
2.58 
2.52 
2.58 

2.51 
2.62 
2.60 
2.55 
2.50 

2.60 
2.56 
2.57 
2.64 
2.53 

2.52 
2.54 
2.60 
2.58 
2.70 


2.90 
2.50 
2.70 
2.58 
2.60 

2.66 

2.82 
2.68 
2.95 
3.10 

3.38 
3.58 
3.72 
3.78 
4.05 

4.32 
4.42 
4.35 
4.32 
3.65 

4.25 
4.40 
4.68 
4.50 
4.68 

4.55 
2.95 
3.62 
4.28 
3.40 
4.08 


4.42 
4.42 
4.48 
4.72 
4.85 

4.90 
4.88 
4.65 
4.80 
3.55 

3.08 
4.15 
3.32 
3.92 
4.02 

3.90 
4.25 
4.45 
3.90 
4.32 

3.72 
4.05 
4.38 
2.95 
3.92 

4.25 
4.08 
4.32 

4.58 
4.68 


4.50 
4.28 
3.80 
2.92 
3.62 

4.30 
4.28 
4.30 
3.38 
4.05 

3.35 
3.90 
3.55 
4.03 
4.22 

4.38 
4.38 
4.48 
4.58 
4.72 

4.65 
4.80 
4.82 
3.75 
4.35 

2.28 
4.55 
4.55 
4.32 
4.42 
4.58 


4.45 
4.62 
4.80 
4.88 
4.92 

4.98 
5.17 
5.22 
4.48 
4.25 

3.65 
3.70 
3.78 
3.62 
3.50 

3.20 
3.58 
3.72 
3.68 
3.78 

3.88 
3.62 
3.72 
3.88 
4.35 

4.68 

4.88 
4.98 
4.00 
4.42 
4.32 


4.32 
2.40 
2.68 
2.55 
3.10 

2.85 
2.48 
3.10 
3.35 
3.75 

3.98 
4.12 
4.28 
4.32 
4.42 

4.62 
4.62 
4.68 
4.72 

4.75 

4.82 
4.88 
5.10 
5.22 
5.38 

5.35 
5.40 
5.45 
5.42 
3.00 


4.05 
3.70 
4.20 
4.70 
4.81 

5.15 
5.11 
5.11 
4.60 

4.75 

5.55 
4.85 
4.65 
2.65 
2.70 

3.80 
4.30 
4.60 
4.80 
4.65 

2.65 
2.65 
2.60 
2.60 
2.60 

2.65 

2.60 
2.60 
2.60 
2.60 
2.60 


2.60 
2.60 
2.60 
2.70 
2.60 

3.15 
3.35 
3.50 
2.60 
2.60 

2.60 
2.60 
2.75 
2.80 
3.20 

2.50 
2.50 
2.55 
2.60 
2.60 

2.60 
2.60 
2.60 
2.60 
2.60 

2.60 
2.70 
2.70 
2.95 
2.55 


2.60 


2 




2.60 


3... 




2.65 


4 




2.60 


5 




2.60 


6 




2.65 


7 




2.60 


8 




2.65 


9 




2.80 


10 




2.85 


11 




2.90 


12 




3.05 


13 




2.75 


14 


4.70 

4.78 

4.82 
4.90 
4.97 
5.04 
5.10 

5.24 
5.20 
5.22 
4.82 
5.09 

5.25 
5.34 
5.38 
5.42 
5.44 
5.38 


3.15 




3.25 


16 


2.60 


17 


3.25 


18 


2.60 


19... 


2.60 




2.75 


21 


2.85 


22 


2.90 


23 


2.90 


24 


2.90 


25 


2.80 


26 


2.75 


27 


2.60 


28 


2.55 


29 


2.70 




2.65 


31 


2.65 







NEW HAMAKTJA DITCH AT STATION NO. 5, NEAR HUELO, MAUI. 

Location. — About 1£ miles south of Huelo post office and immediately below flume 

crossing Oanui Gulch. 
Records available. — January 14, to December 31, 1912. 
Gage. — A reference point, chiseled in cement lining of ditch, from which distance 

to water surface is measured twice daily, at 6.30 a. m. and 4.30 p. m.; datum 

unchanged. 
Channel. — Cement lined; permanent. 
Discharge measurements. — Made from plank at reference point. Difference 

between flow at this station and station No. 4 equals the low-water flow of Oanui 

Stream. 
Cooperation. — East Maui Ditch Co. assists in obtaining gage heights. 

Discharge measurements of New Hamahua ditch at station No. 5, near Huelo, Maui, in 

1912. 



*Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


July 23 


J. B. Stewart 


Feet. 
5.00 
5.10 
2.68 


Sec.-ft. 
33.3 


Sept. 21 


do 


30.6 


Nov. 11 


do 


111 









204 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, of New Hamakua ditch at station No. 5, near Huelo, Maui, for 

1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




5.50 

5.56 
5.56 
5.60 
5.66 

5.65 
5.68 
5.61 
3.76 
5.24 

4.94 
5.30 
3.02 
4.02 
4.88 

5.05 
5.22 
5.32 
3.28 
2.64 

2.66 
2.70 
2.74 
2.72 

2.78 

3.10 
2.68 
2.72 
2.70 


2.66 
2.65 
2.62 
2.68 
2.72 

2.69 
2.67 
2.69 
2.66 
2.66 

2.66 
2.64 
2.68 
2.71 
2.72 

2.74 
2.68 
2.66 
2.72 
2.70 

2.73 
2.77 
2.82 
3.04 
2.64 

2.68 
2.62 
2.66 
3.18 
2.62 
2.67 


2.62 

2.67 
2.64 
2.64 
2.66 

2.63 

2.68 
2.64 
2.68 
2.58 

2.66 
2.63 
2.70 
2.63 
2.70 

2.64 
2.72 
2.70 
2.68 
2.64 

2.72 
2.70 
2.70 
2.77 
2.66 

2.65 

2.68 
2.72 
2.78 
2.82 


2.86 
2.18 
2.85 
2.65 
2.70 

2.65 
2.82 
2.72 
2.90 
3.12 

3.48 

3.68 
3.85 
3.82 
4.10 

4.20 
4.28 
4.42 
4.42 
4.02 

4.38 
4.58 
4.75 
4.35 
4.78 

4.12 
3.05 
3.70 
3.52 
4.05 
4.42 


4.45 
4.62 
4.78 
4.82 
4.92 

4.98 
4.98 
4.75 
4.90 
3.65 

4.18 
4.28 
3.42 
4.15 
4.12 

3.85 
4.32 
4.32 
4.00 
4.42 

3.42 
4.35 
4.48 
3.05 
3.98 

4.30 
4.J2 
4.32 
4.41 

4.78 


4.60 
4.38 
3.90 
3.02 
3.72 

4.12 
4.40 
4.12 
2.98 
3.65 

3.45 
4.22 
- 3.65 
4.18 
4.32 

4.48 
4.55 
4.58 
4.68 
4.82 

4.75 
4.90 
4.90 
3.85 
4.22 

4.75 
4.65 
4.65 
4.38 
4.50 
4.62 


4.62 
4.72 
4.90 
4.98 
5.25 

5.12 
5.22 
5.32 
4.55 
4.38 

3.70 
3.88 
3.92 
3.72 
3.10 

3.55 
3.70 
3.75 
3.75 
3.88 

4.25 
3.52 
3.80 
4.22 

4.45 

4.72 
4.95 
5.30 
4.08 
4.58 
4.32 


4.42 
2.25 
2.75 
2.62 
3.30 

3.15 
2.52 
2.95 
3.36 
3.85 

4.05 
4.18 
4.32 
4.38 
4.62 

4.68 
4.68 
4.72 
4.78 
4.80 

4.87 
4.98 
5.16 
5.32 
5.42 

5.40 

5.45 
5.50 
5.48 
3.05 


4.30 
3.72 
4.46 
4.76 
4.96 

5.17 
5.20 
5.20 
4.85 
4.30 

5.15 
4.90 
4.75 
2.08 
3.30 

3.90 
4.25 
4.60 
4.30 
4.80 

2.65 
2.65 
2.60 
2.60 
2.70 

2.75 
2.70 
2.60 
2.60 
2.60 
2.60 


2.60 
2.60 
2.70 
3.70 
3.45 

3.45 
3.60 
2.60 
2.60 
2.60 

2.60 
2.60 
2.75 
2.85 
3.30 

2.50 
2.50 
2.50 
2.55 
2.60 

2.60 

2.60 
2.60 
2.60 
2.60 

2.60 
2.60 
2.80 
2.60 
3.05 


2.60 


2 




2.60 


3 




2.65 


4 




2.60 


5 




2.60 


6 




2.65 


7 




2.65 


8 




2.85 


9 




2.90 


10 




2.95 


11 




3.00 


12 




3.15 


13 




3.35 


14 


4.80 
4.88 

4.92 
5.00 
5.07 
5.12 
5.20 

5.23 
5.28 
5.31 
4.87 
5.18 

5.35 
5.41 
5.46 
5.47 
5.50 
5.47 


3.25 


15 


3.25 


16 


2.60 


17 


3.35 


18 


2.70 


19 


2.70 


20 


2.85 


21 


2.95 


22 


3.00 


23 


3.00 


24 


3.00 


25 


3.10 


26 


2.85 


27 


2.85 


28 


2.65 


29 ;... 


2.80 


30 


2.75 


31 


2.75 







OLD HAMAKUA DITCH AT OPANA WEIR, NEAR HUELO, MAUI. 

Location. — About 5 miles northwest of Huelo post office and a short distance below 

the crossing of Opana Stream. 
Records available. — January 1, 1910, to December 31, 1912. 
Gage. — Friez automatic clock register. 
Discharge measurements. — By a Cippoletti weir. 
Cooperation. — Weir is the property of the East Maui Ditch Co.; records copied from 

Maui Agricultural Co. 

Daily discharge, in million gallons, of Old Hamakua ditch at Opana weir, near Huelo, 

Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.70 
.70 
.70 
.67 
.55 

.55 
.46 
.50 
.55 
.93 


0.30 
.30 
.25 
.20 
.20 

.13 

.10 

3.83 

5.03 

.33 


24.60 
26.80 
27.10 
27.30 
26.10 

24.70 
23.60 
20.40 
22.20 
21.40 


9.45 
8.30 
22.20 
23.70 
25.00 

27.50 
28.10 
20.10 
26.50 
28.00 


17.80 
18.00 
14.70 
16.70 
16.20 

15.90 
13.00 
13.90 
8.16 
2.73 


0.60 
.60 
.45 
.40 
.40 

.40 
.40 
.40 
.30 
4.13 


0.30 








18.00 
13. 80 
18.70 
16.40 
11.50 

2.26 
.60 

1.73 
28.50 
28.40 


18.40 


2 


.30 

.30 

1.93 

1.23 

.40 

.40 

2.00 

11.90 

1.80 




2.70 

8.53 

6.86 

.86 

.80 

4.21 

.83 

.13 




26.70 


3 


35.30 


4 


18.00 


5... 


18.30 


6 


18.80 


7 


21.10 


8 


16.70 


9 


14.10 


10 


12.70 



ISLAND OF MAUI. 



205 



Daily discharge, in million gallons^ of Old Hamakua ditch at Opana weir, near Huelo, 
Maui, for 1912 — Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


U . ... 


0.43 

.40 
.40 
.40 
.36 

.30 
.30 
.30 
.37 

.47 

.27 
.20 
.23 
.43 
.30 

.25 
.30 
.35 
.40 
.35 
.30 


0.30 

.30 

5.50 

4.83 
.47 

.23 

.30 

.50 

11.10 

25.90 

25.10 

26.80 
19.80 
16.00 
15.40 

13.70 
21.00 
26.90 
24.20 


25.10 
26.30 
27.50 
27.10 
22.30 

17.30 
19.60 
25. 30 
19.60 
7.95 

16.20 
13.90 
10.30 
5.30 

7.37 

10.80 
8.13 
7.73 
6.20 
16.80 
25.80 


27.20 
26.90 
26.10 
26.90 
27.00 

27.40 
27.60 
23.00 
19.00 
23.40 

24.40 
23.40 
23.50 
25.10 
16.70 

26.30 
25.20 
21.90 
19.20 
16.60 


1.30 

1.20 

.70 

.60 

.60 

.60 
.60 
.60 
.60 
.60 

.60 
.60 
.60 
.60 

.55 

.52 

8.86 

6.00 

3.30 

.80 

.70 


2.83 
.70 

1.63 
.53 
.33 

.40 
.40 
.40 
.40 
.40 

.70 
.63 
.40 
9.43 
.67 

.40 
.30 
.20 
.20 
.30 


1.80 
.45 

1.27 
.30 
.25 

.20 
.20 
.20 
.20 
.10 

.10 
.15 
.10 
.10 
.10 

.15 
.10 
.10 
.10 
.10 
.10 


0.96 






25.80 
13.80 
11.40 
9.23 
27.50 

27.30 
27.20 
27.80 
27.50 
25.30 

17.30 
16.00 
16.70 
14.30 
14.80 

13.10 
12.20 
11.70 
8.95 
10.70 


9.97 


12 






5.60 


13 








1.16 


14 








.30 


15 


2.63 

.15 
.20 
.20 
.08 






.77 


16 






5.27 


17 






4.10 


18 






10.70 


19. . 






23.40 


20 






15.80 


21 ■-- 


.05 




7.03 
13.20 
1.97 
3.80 
3.13 

5.87 
23.70 
25.60 
15.30 
16.10 
26.80 


23.30 


22 


27.60 


23 






27.00 


24 






25.70 








21.60 


26 






25.80 


27. 






20.20 


28. 






19.30 


29. 






15.90 


30. 






15.80 


31... 






14.60 











Monthly discharge of Old Hamakua ditch at Opana weir, near Huelo, Maui, for 1912. 



Month. 



Discharge in million gallons. 



Maximum. Minimum. Mean 



Run-off 
(total in 

million 
gallons). 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The period 



0.93 
26.90 
27.50 
28.10 
18.00 

9.43 
11.90 

2.63 

8.53 
26.80 
28.50 
35.30 



35.30 



0.20 
.10 

5.30 

8.30 
.52 
.20 
.10 
.05 
.13 

1.97 
.60 
.30 



.05 



0.43 
8.59 
19.00 
23.20 
5.41 



.61 
3.11 
13.00 
16.60 
16.60 



8.36 



13.40 
249.00 
591. 00 
696.00 
168.00 

29.30 

26.70 
4.27 

24.90 
142.00 
498.00 
514. 00 



2,510.00 



KALUANUI DITCH AT PUUOMALEI, NEAR HAMAKUAPOKO, MATTI. 



Location. — About 3 miles east of Paia, in Hamakuapoko, just west of Maliko Gulch. 

Records available.— January 1, 1910, to December 31, 1912. 

Discharge measurements. — By 6-foot sharp-crested weir with bottom and end 

contractions. 
Cooperation. — Weir is the property of the East Maui Ditch Co., but records are 

copied from records kept by Maui Agricultural Co. 



206 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in million gallons, of Kaluanui ditch at Puuomalei, near Hamakua- 

poho, Maui, for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1. 
2. 
3. 
4. 
5. 

6. 

7. 
8. 
9. 
10. 

11. 
12. 
13. 
14. 

15. 

16 
17. 
18 
19 
20 

21 
22 
23 
24 

25 

26 
27 
28 
29 
30 
31 



4.56 
4.56 
4.56 
4.03 
4.03 

4.03 
3.51 
3.51 
3.51 
3.51 

3.51 
2.95 
2.95 
2.95 
2.95 

2.95 

2.50 
2.50 
2.50 
2.50 

2.50 

2.50 
2.50 
2.95 
2.95 

2.50 
2.50 
2.50 
2.50 
2.50 
2.50 



3.51 
3.51 
2.10 
1.85 
2.02 

2.02 
2.80 
3.30 
3.00 
3.00 

2.50 
2.00 
2.02 
2.02 
2.02 

2.02 

2.30 
3.51 
2.80 
3.00 

3.00 
3.30 
3.50 
3.50 
3.50 

3.50 
3.50 
3.50 
3.50 



3.51 
3.51 
3.51 
3.51 
3.51 

3.51 



3.51 
3.51 
3.51 
3.51 
3.51 

3.51 
3.51 
3.51 
4.56 
4.56 

4.56 
4.56 
4.56 
4.56 
4.56 

4.56 
4.56 
4.56 
4.56 
4.56 
4.56 



4.56 
4.56 
4.56 
4.56 
4.56 

4.56 
4.56 
4.56 
4.56 
4.56 

4.56 

4.56 
4.56 
4.56 
4.56 

4.56 
4.56 
4.56 
4.56 
4.56 

4.56 
3.51 



3.51 
3.51 
3.51 
3.51 
3.51 



3.51 
3.50 
3.50 
3.50 
3.50 

3.50 
3.50 
3.50 
4.03 
4.03 

4.03 
4.03 
2.96 
2.60 
2.60 

2.60 
2.60 
2.60 
2.60 
2.60 

2.96 
2.50 
2.50 
2.50 
2.50 

2.50 
2.50 
2.50 
2.50 
2.50 
2.50 



2.50 
2.50 
2.50 
2.50 
2.50 

2.02 
2.50 
2.50 
2.50 
2.50 

2.50 
2.50 
2.50 
2.50 
2.50 

2.50 

2.50 
2.50 
2.50 
2.02 

1.61 
.86 
.86 
.86 



0.86 
.86 
1.24 
1.24 
1.24 

1.24 

.86 

1.24 

1.24 



1.24 
1.24 
1.24 
1.24 
1.24 

1.24 
1.24 
1.24 
1.24 



.87 
.87 
.87 
.87 
.87 

.87 
.87 
.87 
.87 
.87 
.87 



0.83 

.83 
.83 
.83 



2.50 
2.50 
2.50 
2.50 
2.50 

2.50 

2.50 
2.50 
2.50 
1.61 

1.61 
1.24 
1.24 
1.24 
1.24 

.32 
.32 
.32 
.32 
.32 

.32 
.32 
.32 
.32 
.32 

.32 
.32 
.32 
.32 
.32 



2.03 
1.61 
1.61 
1.24 
1.24 

1.24 
.32 
.32 
.32 
.32 

.32 

.32 

1.61 

2.01 

2.01 

1.61 



2.50 

2.50 
3.51 
3.51 
3.51 
3.51 

3.51 
3.51 
3.51 
3.51 
3.51 
3.51 



3.50 
3.20 
2.70 
2.37 
2.43 

2.38 
2.10 
2.47 
3.43 
3.63 

3.93 
3.83 
3.53 
3.50 
3.50 

3.50 
3.50 
3.50 
3.50 
3.50 

3.50 

3.70 
3.97 
4.00 
3.80 



3.47 



3.51 
3.60 
3.97 
4.03 
4.03 

4.03 
4.03 
4.03 
4.03 
4.03 

4.03 
4.03 
4.03 
4.03 
4.03 

4.03 
4.03 
4.03 
4.03 
4.03 

4.03 
4.03 
4.03 
4.03 
4.03 

4.03 
4.03 
4.03 
4.03 
4.03 
4.03 



Monthly discharge of Kaluanui ditch at Puuomalei, near Hamakuapoho , Maui, for 1912. 



Month. 


Discharge in million gallons. 


Run-off 
(total in 


Maximum. 


Minimum. 


Mean. 


million 
gallons). 




4.56 
3.51 
4.56 
4.56 
4.03 
2.50 
1.24 
.83 
2.50 
3.51 
4.00 
4.03 


2.50 

1.85 

3.51 

3.51 

2.50 

.86 

.86 

.29 

.32 

.32 

2.10 

3.51 


3.11 
2.83 
3.95 
4.24 
3.01 
1.95 
1.05 
.52 
1.18 
1.96 
3.35 
4.00 


96.5 




82.1 


March 


122.0 


April 


127.0 


May 


93.2 


June 


58.4 


July 


32.5 


August 


16.2 


September 


35.5 


October 


60.8 


November : 


100.0 


December 


124.0 






The year 


4.56 


.29 


2.59 


947.0 







ISLAND OP MAUI. 



207 



LOWRIE DITCH AT OPANA WEIR, NEAR HUELO, MAUI. 

Location. — About 4 miles northwest of Huelo post office and a short distance west 

of Halehaku Gulch. 
Records available. — January 1, 1910, to December 31, 1912. 
Gage. — Friez automatic clock register. 

Discharge measurements. — By sharp-crested weir 16 J feet long, with bottom and 
j end contractions. 
Cooperation. — Weir is the property of East Maui Ditch Co., but records are copied 

from records of the Hawaiian Commercial Sugar Co. 

Daily discharge, in million gallons, of Lowrie ditch near Huelo, Maui, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


50.20 
51.60 
49.60 
44.20 
40.10 

39.40 
42.70 
45.20 
45.10 
39.70 

36.30 
34.20 
32.50 
31.30 
29.40 

27.80 
26.50 
25.60 
24.50 
23.50 

22.90 
22.00 
21.00 
29.40 
29.30 

22.10 
20.30 
19.20 
18.50 
17.80 
20.00 


19.70 
17.20 
17.00 
16.70 
15.70 

15.40 
15.00 
21.80 
50.00 
30.20 

27.70 
29.60 
47.50 
45.60 
41.90 

28.40 
25.90 
23. 70 
45.40 
50.20 

55.40 
55.90 
52.30 
52.30 
52.50 

50.10 
58.10 
56.90 
51.00 


55.80 
56.30 
55.70 
53.60 
52.00 

52.90 
52.20 
52.30 
53.70 
53.20 

55.70 
57.60 
57.20 
55.10 
53.50 

54.10 
55.00 
54.60 
54.00 
54.70 

54.20 

54.20 

52.70 

3.03 

.90 

.70 

.76 

9.83 

51.70 

54.00 

55.50 


55.10 
55.20 
55.20 
57.10 
9.60 

1.33 
39.10 
51.50 
58.10 
58.00 

57.90 
58.80 
57.90 
29.80 
57.70 

58.20 
57.20 
56.90 
56.60 
57.10 

57.60 
57.80 
58.10 
57.70 
57.60 

57.70 
57.30 
57.20 
56.90 
56.70 


53.10 
53. 10 
53.30 
53.30 
53.30 

53.20 
53.30 
56. 00 
52.80 
51.30 

52.50 
48.00 
45.60 
44.40 
40.30 

37.30 
35.70 
34.00 
36.40 
42.60 

39.50 
31.60 
28.60 
34.90 
29.80 

38.70 
55.20 
52.10 
49.10 
49.00 
44.90 


36.30 
34.00 
31.10 
29.00 
27.10 

25.70 
26.30 
34.10 
31.40 
48.20 

54.60 
48.80 
53.60 
49.90 
48.40 

50.00 
42.60 
36.10 
43.30 
40.80 

51.80 
42. 60 
35.90 
52.70 
45.40 

40.80 
37.40 
42.70 
31.60 
28.90 


33.80 
41.50 
51.70 
52. 70 
51.80 

43.80 
40.20 
36.60 
55.00 
48.60 

49. 50 
46.50 
52.50 
50.00 
47.20 

41.20 
36.70 
34.50 
32.70 
29.60 

31.60 

28.80 
26.10 
43.00 
42.00 

34.40 
33.40 
36.00 
34. 80 
31.00 
26.40 


24.20 
22.80 
24.10 
21.80 
19.30 

17.90 
19.70 
18.30 
39.00 
38.50 

50.80 
46.60 
43.00 
45.70 
54.40 

51.90 
46.10 
45.10 
16.20 
33.40 

30.20 
49.50 
39.40 
30.00 
26.00 

26.60 
29.30 
26.40 
40.40 
34.70 
39.40 


38.80 
52.70 
55.90 
53.50 
51.70 

51.90 
55.50 
53.00 
50.90 
43.10 

37.30 
33.70 
30.30 
27.70 
25.90 

24.40 
23.50 
21.80 
20.70 
21.30 

20.10 
18.20 
17.50 
18.90 
16.00 

15.90 
15.30 
14.80 
17.40 
49.90 


41.90 
39.10 
41.70 
28.80 
23.00 

19.80 
20.00 
20.70 
23.00 
31.30 

22.60 
40. 40 
42.70 
54.40 
54.50 

48.60 
46.90 
35.20 
28.30 
30.90 

53.60 
56.50 
53.40 
53.50 
54.00 

53.80 
56.80 
56.00 
55.30 
56. 50 
57.20 


55.60 
56.30 
56.60 
56.00 
54.20 

53.60 
55.40 
55.30 
57.30 
56.70 

56.30 
55.20 
55. 60 
55.60 
54.70 

57.20 
56.30 
54.10 
57.30 
57.70 

57.50 
56.50 
57.10 
56.80 
66.60 

56.30 
56.10 
56.30 
65.40 
55.00 


57.80 


2 


61.10 


3 


56.40 


4 


45.50 


5 


52.30 


6 


47.90 


7 


47.30 


8 


50.10 


9 


45.10 


10 


42.60 


11 


47.40 


12 


44.70 


13 


49.40 


14 


52.00 


15 


50.60 


16 


54.60 


17 


54.10 


18 


55.10 


19 


57.40 


20 


56.10 


21 


57.50 


22 


57.40 


23 


57.10 


24 


67.00 


25... 


57.00 


26 


57.00 


27 


56.70 


28 


56.80 


29 : 


56.40 


30 


56.20 


31. .. 


56.20 







Monthly discharge of Lowrie ditch near Huelo, Maui, for 1912. 



Month. 



Discharge in million gallons. 



Maximum. 



Minimum. 



Mean. 



Run-off 
(total in 
million 
gallons). 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



51. 60 
58.10 
57.60 
58.80 
56.00 
54. 60 
55.00 
54.40 
55. 90 
57.20 
57.70 
57. 80 



58.80 



17.80 
15. 00 
.70 
1.33 
28. 60 
25.70 
26.10 
16.20 
14.80 
19.80 
53.60 
42.60 



.70 



31.7 
36.9 
46.0 
52.1 
45.3 
40.0 
40.1 
33.9 
32.6 
41.9 
56.0 
53.3 



42.5 



982 
1,070 
1,430 
1,560 
1,400 
1,200 
1,240 
1,050 

978 
1.300 
1,680 
1,650 



15,500 



208 



WATER RESOURCES OF HAWAII, 1912. 
HAIKU DITCH AT PEAHI WEIR, NEAR HUELO, MAUL 



Location. — In Peahi about 5 miles northwest of Huelo post office. 

Records available. — January 1, 1910, to December 31, 1912. 

Gage. — Friez automatic clock register. 

Discharge. — Measured by sharp-crested weir, 16J feet long, with bottom and end 

constructions. 
Cooperation. — Weir is property of East Maui Ditch Co.; discharge records are 

copied from records of Hawaiian Commercial & Sugar Co. 

Daily discharge, in million gallons, of Haiku ditch at Peahi weir, near Huelo, Maui, for 

' 1912. 



Day. 



1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 

21 

22 : 

23 

24 

25 

26 

27 

28 

29 

30 

31 



Jan. 



40.30 
40.30 
34.80 
27.00 
36.90 

23.00 
18.70 
9.23 
3.83 
3.73 

2.96 
2.53 
2.62 
3.10 
3.10 

.63 
1.90 
3.75 
2.00 
2.00 

2.00 
1.97 
1.83 
2.63 
1.97 

1.90 
1.83 
1.83 
1.83 
1.83 
2.00 



Feb. 



2.0ft 
1.95 
1.90 
1.63 
1.33 

1.10 
1,10 
8.97 
35. 80 
5.30 

5.17 

3.60 

30.90 

34.90 

20.20 

4.93 

3.15 

3.03 

30.80 

52.10 

53.20 
53. 30 
53.30 
53.30 
53.30 

36.20 
53.20 
53. 30 
53.40 



Mar. 



53.30 
53. 30 
53.30 
53. 30 
53.30 

53. 30 
53. 30 
53.30 
53.30 
53.30 

53.30 
53.30 
53.00 

52.80 
52.80 

53.20 
53.10 
53.50 
51.90 
53.40 

53.40 
48.90 
43. 00 
49.60 
53.30 

53.00 
53. 00 
47.80 
13.20 
47.10 
51.70 



Apr. 



53. 30 
53. 30 
53.30 
54.70 
53.40 

53.80 
53.30 
53. 30 
53.30 
53.30 

53.30 
54.10 
53.30 
53.00 
53.60 

53.00 
53. 00 
53.00 
53.00 
53.00 

53.30 
53.30 
53. 30 
53.30 
53.30 

53.80 
53.50 
53.30 
46.70 
42.40 



May. 



46.50 
53.30 
48.40 
51. 70 
51.20 

52.20 
51.20 
53.30 
46.10 
28.00 

15. 20 
7.37 
6.00 
5.90 
5.90 

5.80 
9.77 
4.30 
4.30 
4.30 

4.03 
2.17 
1.50 
1.70 
1.70 

13.40 
49.70 
43.00 
29.30 
31.30 
7.23 



June. 



2.00 
2.00 
1.80 
1.40 
1.20 

1.63 
1.00 
1.13 
.90 
16.60 

41.00 
39.00 
33.30 
23.10 
14.80 

11.50 
5.20 
2.05 
2.26 
2.03 

19.10 
11.30 
3.10 
13.20 
16.80 

22.10 
11.70 
4.50 
3.90 
2.07 



July. 



2.03 

6.43 

11.30 

34.40 

20.50 

8.17 

2.77 

2.33 

48. 70 

25.60 

28.10 
21.30 
35.20 
27.90 
17.60 

3.60 
2.57 
2.13 
1.43 



15. 30 
3.03 

2.10 
1.65 
1.60 
1.40 
.95 
.60 



Aug. 



0.55 
.60 
.50 
.40 
.20 

.10 

.35 

.20 

7.40 

2.46 

27.90 
20.20 
10.20 
14.90 
49.10 

37. 50 

19.60 

9.46 

2.06 

1.73 

1.80 
10.60 
5.33 
1.43 
1.86 

1.46 
1.20 
.76 
4.33 
1.40 
1.46 



Sept. 



1.66 
33.40 
49.50 
41. 50 
29.00 

35. 80 
46.90 
30. CO 
17.80 
2.56 

1.93 
1.33 
1.33 
.80 
.01 



23.30 



Oct. 



14.80 
11.50 
10.50 
2.00 
1.03 

.50 

"'.*50' 
.14 
1.50 

.90 

3.27 

3.30 

43. 00 

35.70 

18.00 
7.90 
2.80 
2.03 
1.70 

35.60 
52.80 
53.30 
53.30 
40.90 

39.40 
53.40 
53.30 
53.30 
53. 20 
53.20 



Nov. 



52.60 
51.50 
53.10 
48. 00 
34.70 

42.90 
34.30 
15.90 
44.70 
45.40 

28.00 
37.50 
43.10 
40.70 
34.60 

50. 70 
51. 20 
47.80 
53.30 
53.40 

53.30 
53.40 
53.40 
9.37 



Dec. 



1.50 
12.00 
14.20 
2.73 
1.73 

1.47 
1.70 
.30 
.20 



.90 



6.00 
20.70 

34.90 
34.70 
48. 20 
53.70 
47.10 

48.30 
53.60 
53. 50 
51.40 
45.20 

50.20 
49.20 
49. 50 
50.10 
49.40 
44.70 



Monthly discharge of Haiku ditch at Peahi weir, near Huelo, Maui, for 1912. 



Month. 


Discharge in million gallons. 


Run-off 
(total in 


Maximum. 


Minimum. 


Mean. 


million 
gallons). 


January 


40.30 
53.40 
53.50 
54.70 
53.30 
41.00 


0.63 

1.10 

13.20 

42.40 

1.50 

.90 


9.16 
24.60 
50.90 
52.80 
23.70 
10.40 
12.20 

7.65 
19.80 
23.40 
40. 80 
27. 60 


284 


Februar y 


712 


March. .'. 


1,580 


April 


1,580 
736 




June 


312 


July 


329 


August 


49.10 


.10 


237 


September 


317 


October 


• 




703 


November 






979 








827 










The year 






25.30 


8,600 









ISLAND OF MAUI. 



209 



MISCELLANEOUS MEASUREMENTS. 

The following discharge measurement was made by J. B. Stewart 
on Koolau ditch at Alo division weir, near Huelo, Maui: 

March 13, 1912: Width, 8.0 feet; area of section, 33.6 square feet; mean velocity, 
4.12 feet per second; gage height, 1.51 feet; discharge, 139 second-feet. 

PUMPED WATER ON MAUI. 

Considerable water is pumped for irrigation by different planta- 
tions on the leeward side of Maui. 

Figures showing the amount of water pumped each month by the 
Pioneer Mill Co. have been furnished to the United States Geological 
Survey. These data show the amount of underground water raised 
by eight pumps, seven steam and one electric, located in the vicinity 
of Lahaina. The measurements were obtained by means of pump 
displacement. 

Monthly discharge of pump No. 1, station No. 1, Pioneer Mill Co., near Lahaina, Maui, 

for 1912. 



Month. 



Days. 



Hours. 



Million 
gallons 
water 
lifted. 



Million 
foot-gallons 
water lifted. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



315 



692J 

356 

155 

488i 

7421 

7071 

712f 

744 

669 

7411 

710* 

577 



7,300 



248 
130 
58. 
193 
292 
276 
274 
273 
251 
272 
268 
223 



2,760 



69,500 
36,400 
16,500 
54,000 
81,700 
77,300 
76,600 
76,500 
70,200 
76,100 
75,200 
62,600 



773,000 



Monthly discharge of pump No. 2, station No. 1, Pioneer Mill Co., near Lahaina, Maui, 

for 1912. 



January. . . . 
February . . 

March 

April 

May 

June 

July 

August 

September . 

October 

November . 
December. . 



Month. 



Days. 



Hours. 



185J 
11 



Million 
gallons 
water 
lifted. 



41.20 
2.44 



Million 
foot-gallons 
water lifted. 



11,500 
684 



226f 

678* 

677* 

691J 

621 

701 

636 

1551 



50.30 
151.00 
150.00 
154.00 
138.00 
156. 00 
141. 00 

34.50 



The year. 



219 



4,580 



1,020 



14, 100 
42,200 
42, 100 
43, 000 
38,600 
43,600 
39,500 
10,700 



286,000 



14694°— wsp 336—14- 



-14 



210 



WATER RESOURCES OF HAWAII, 1912. 



Monthly discharge of pump No. 3, station No. 1, Pioneer Mill Co., near Lahaina, Maui, 

for 1912. 



Month. 


Days. 


Hours. 


Million 
gallons 

water 
lifted. 


Million 
foot-gallons 
water lifted. 




6 


70J 


21.6 


2,210 






July 


1 
29 
30 
30 
21 


10 
3971 
503£ 
587 
374 


3.08 
122.00 
155. 00 
181.00 
115.00 


314 


August 


12, 500 




15, 800 




18, 500 


November. 


18,800 


December 
















117 


1,940 


598 


68,100 





Monthly discharge of electric pump, station No. 1, 

for 1912. 



Pioneer Mill Co., near Lahaina, Maui, 



Month. 



Days. 



Hours. 



Million 
gallons 
water 
lifted. 



Million 
foot-gallons 
water lifted. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



341 



369 

534i 

6141 

711 

713| 

713* 

742 

717i 

716* 

707 

625f 



260 
138 
200 
240 

267 
268 
268 

278 



265 
235 



26,600 
14, 100 
20,400 
24,500 
27,200 
27,300 
27,300 
28,400 
27,400 
27,400 
27,000 
23,900 



302,000 



Monthly discharge of pump No. 1, 



station No. 2, Pioneer Mill Co. 
for 1912. 



near Lahaina, Maui f 



Month. 



Days. 



Hours. 



Million 
gallons 
water 
lifted. 



Million 
foot-gallons 
water lifted. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



670 
642 
670 
654 
744 
704 
712 
686 
645 
732 
548 
611 



359 



,020 



67.0 
64.2 
67.0 
65.4 
74.4 
70.4 
71.2 
68.6 
64.5 
73.2 
54.8 
61.1 



802.0 



5,730 
5,490 
5,730 
5,590 
6,360 
6,020 
6,090 
5,870 
5,510 
6,260 
4,690 
5.220 



68, 600 



ISLAND OF MAUI. 



211 



Monthly discharge of pump No. 2, station No. 2, Pioneer Mill Co., near Lahaina, Maui, 

for 1912. 



Month. 



Days. 



Hours. 



Million 

gallons 
water 
lifted. 



Million 
foot-gallons 
water lifted. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



358 



652 
641J 
656 
654 

744 
720 



573 



548 
509 



7,760 



65.2 

64.2 
65.6 
65.4 
74.4 
72.0 
69.8 
67.1 
57.3 
69.6 
54.8 
50.9 



776 



5,570 
5,480 
5,610 
5,590 
6,360 
6,160 
5,970 
5,730 
4,900 
5,950 
4,690 
4,350 



400 



Monthly 



e of pump No. 1, station No. 3, Pioneer Mill Co., near Lahaina, Maui, 
for 1912. 



Month. 



Days. 



Hours. 



Million 
gallons 
water 
lifted. 



Million 
foot-gallons 
water lifted. 



May 

June 

July 

August 

September 

October 

November 

December 

The period 



240 
694 
735 
736 
710 
727 
691 
211 



66.4 
206.0 
229.0 
265.0 
255.0 
265.0 
242.0 

73.4 



206 



1,600 



28, 500 
88, 700 
98,500 
114, 000 
109,000 
114,000 
104, 000 
"31,. 600 



688, 000 



Monthly 



of pump No. 2, station No. 3, Pioneer Mill Co. 
for 1912. 



near Lahaina, Maui, 



Month. 



May 

June 

July 

August 

September 

October 

November...... 

December 

The period 



Days. 



210 



Hours. 



737 
739 
715 
730 
700 
143 



5,040 



Million 
gallons 
water 
lifted. 



136 
209 
231 
260 
256 
262 
245 
48.5 



1,650 



Million 
foot-gallons 
water lifted. 



58,400 
90,200 
99, 200 
112, 000 
110, 000 
112, 000 
105, 000 
20,900 



708,000 



212 



WATER RESOURCES OF HAWAII, 1912. 

ISLAND OF HAWAII. 

HILO GROUP OF STREAMS. 

WAILUKU RIVER NEAR HILO, HAWAII. 



Location. — A short distance above Hilo Electric Light Co. power canal intake and 

about 2 miles west of Hilo. 
Records available.— March 21, 1911, to December 31, 1912. 
Gage. — Vertical staff and Barrett & Lawrence hydro-chronograph; datum unchanged 

since gage was established. 
Channel. — Probably slightly shifting. 

Discharge measurements. — Made from cable car 120 feet below gage. 
Accuracy. — Results considered good. 

Discharge measurements of Wailuku River near Hilo, Hawaii, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Jan. 31« 
July 12 


C. H.Pierce 

Pierce and Chris- 


Feet. 
&5.67 

7.04 
5.80 
5.20 


Sec.-ft. 
36 

475 
170 
102 


Oct. 18 
31 

Dec. 7 
23 


E. O. Christiansen. 
do 


Feet. 
6.14 
8.20 
6.85 
14.7 


Sec.-ft. 
225 
780 


do 

do 


360 


Sept. 16 
20 


E. 0. Christiansen, 
.do 


5,620 









a Measurement made by wading 150 feet above gage. 

b Backwater on gage caused by temporary sandbag dam at intake of power canal. 

Daily gage height, in feet, of Wailuku River near Hilo, Hawaii, for 1912. 
[J. Goorko, observer.] 



Day. 



Feb. Mar. Apr. May. June. July. Aug 



Oct. Nov. Dec. 



2 




3 




4 




5 




6 




7 




8 




9 




10 




11 




12 




13 




14 




15 




16 




17 




18 




19 




20 


6.0 


21 


15.0 


22 


15.5 


23 


13.0 


24 


11.0 


25 


9.0 


26 


7.6 


27 


7.25 


28 


7.20 


29 


7.20 


30... 




31 





6.40 
6.06 

5.78 
5.58 

5.42 
5.29 
5.20 
5.23 
5.28 

5.84 
7.89 
8.58 
8.84 
7.71 

7.04 

7.88 
9.96 
8.26 
7.62 

7.16 
6.78 
6.79 
6.42 
6.13 

5.92 
5.65 
5.46 
5.32 
5.74 
7.33 



6.32 
5.95 
5.86 



6.60 
11.34 

9.47 
10.02 

8.73 

8.16 
7.42 
7.18 
6.76 
6.67 



7.56 
7.04 
6.87 
6.93 

6.33 

6.10 
7.07 
7.41 
7.60 

7.63 
7.36 
6.98 
6.60 
6.41 



3.26 



8.00 
7.50 

7.80 
7.30 
6.80 
6.53 
6.22 

5.98 
5.72 
5.58 
5.40 
5.22 

5.14 
5.12 
5.03 
4.93 
4.91 

4.94 
4.85 
4.74 
4.76 
4.62 

4.63 
4.59 
4.52 
4.50 
4.44 
4.39 



4.38 
4.37 
4.27 
4.26 
4.27 

4.14 
4.11 
4.22 
4.30 

4.77 

5.85 
5.19 
5.09 

4.88 
4.77 

4.77 
4.61 
4.53 
4.56 
4.61 

5.02 
4.84 
4.62 
5.23 
5.34 

5.10 

5.79 
5.81 
5.39 
5.27 



5.15 
5.60 
7.07 
6.27 
5.95 

5.76 
5.49 
5.28 
5.15 
6.13 

8.30 
6.99 
6.51 
7.17 
6.40 

6.02 
5.85 
5.70 
5.55 
5.40 



5.30 
5.25 
5.20 
5.56 
5.34 

5.14 
5.10 
5.04 
5.13 
5.06 
4.94 



4.88 
4.88 
5.50 
5.77 
5.39 

5.07 
6.02 
4.99 
4.97 



4.93 
4.98 
4.96 
5.23 

5.05 
4.94 
4.95 
5.27 
4.99 

4.91 
4.82 
4.82 
4.91 
4.81 

4.77 
5.14 
4.98 
4.86 
4.80 
4.81 



6.24 
7.27 
10.20 
12.45 
9.40 

8.10 
7.40 
7.00 
6.90 
6.57 

6.22 
6.56 
6.02 
6.02 
5.78 

5.77 
5.55 
5.42 
5.33 
5.21 

5.29 

5.25 
5.08 
5.02 
4.94 

4.89 
4.83 
4.78 
4.72 
5.12 



5.25 
4.91 
4.87 
4.82 
4.71 

4.65 
4.60 
4.59 
4.63 



4.79 
5.53 
5.16 
5.04 
5.28 

5.39 
8.13 
6.11 
6.64 
7.26 

7.11 
10.32 
11.31 
8.40 
7.43 

9.30 
13.57 
10.82 
10.41 
8.89 
8.76 



8.24 
8.12 
9.72 
7.93 
7.74 

7.61 
7.36 
7.42 
8.3 
10.6 

10.8 
8.84 
8.15 
7.58 
7.13 



9.28 
8.73 
9.04 
7.82 

7.44 
7.20 
7.21 
7.00 
6.72 

6.67 
7.00 
7.04 
6.78 



7.92 
8.91 



7.92 
7.30 



7.16 
6.82 
6.48 

6.26 
6.02 
5.82 
5.73 
5.73 

5.96 
5.73 
5.61 
5.94 



6.48 
8.85 
14.26 
11.64 
8.75 

9.12 
8.19 
7.52 
7.20 
6.93 
6.71 



ISLAND OF HAWAII. 213 

Daily discharge, in second-feet, of Wailuku River near Rilo, Hawaii, for 1912 . 



Day. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


i ; 




334 
273 
213 
169 
143 

124 
111 
102 
105 
110 

178 
661 
934 
1,060 
601 

415 
657 
1,720 
798 
574 

447 
354 

357 

277 
224 

190 
152 
129 
114 
164 
492 


258 
195 
181 
291 

378 

314 
2,740 
1,420 
1,760 
1,010 

760 
517 
452 
350 
329 

327 
556 
415 
376 
390 

260 
219 
423 
514 
568 

577 
500 
403 
314 

275 


247 
378 
359 
700 
539 

630 
484 
359 
299 
240 

200 
161 
143 
122 
104 

97 
95 

87 
78 
77 

79 
72 
65 
66 
57 

58 
55 
51 
50 
46 
43 


43 
42 
37 
36 
37 

33 
32 
35 

38 
67 

180 

101 

92 

75 
67 

67 
57 
52 
54 
57 

86 
72 
57 
105 
116 

93 
171 
174 
121 
109 


98 
145 
423 
249 
195 

166 
132 
110 
98 
224 

814 
406 
295 
449 
273 

206 
180 
158 
139 
122 

112 
107 
102 
140 
116 

97 
93 
88 
96 
89 
79 


75 

75 

133 

168 

121 

90 
86 
83 

82 
82 

82 
78 
82 
81 
105 

88 
79 
80 
109 
83 

77 
70 
70 
77 
70 

67 
97 
82 
73 
69 
70 


243 

476 

1,890 

3,660 

1,380 

737 
511 
405 
383 
308 

240 
306 
206 
206 
169 

168 
139 
124 
115 
103 

111 

107 
91 
86 
79 

75 
71 
68 
63 
95 


107 
77 
74 
70 
63 

59 
56 
55 
58 
61 

68 
137 
98 
88 
110 

121 
748 
221 
323 
473 

434 

1,970 

2,720 

855 

619 

1,320 
4,620 
2,330 
2,040 
1,080 
1,020 


790 
745 
1,570 
675 
611 

571 
500 
517 
814 
2,170 

2,310 

1,060 

756 

562 

439 

657 
1,310 
1,010 
1,170 

637 

522 
457 
460 
405 
341 

329 
405 
415 
354 
403 


671 


2 




1,100 


3 




1,040 


4 




671 


5 




484 


6 




390 


7 




381 


8 




447 


9 




364 


10 .. 




. 289 


11 




247 


12 




206 






175 


14 




162 






162 


16 




197 


17 




162 






146 


19 




193 




5,880 
6,320 
4,130 
2,470 
1,150 

568 
470 
457 
457 


395 


21 


289 


22 


1,060 




5,220 


24 


2,980 




1,020 




1,210 


27.. 


771 




545 


29 


457 




390 


31 




338 









Monthly discharge of Wailuku River near Hilo, Hawaii, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. 



Minimum. 



Mean. 



Run-off 
(total in 
aere-feet). 



Accu- 
racy. 



February. . 

March 

April. 

May 

June 

July 

August 

September. 
October... 
November. 
December. 



6,320 



814 
168 
3,660 
4,620 
2,310 
5,220 



The period . 



203 
102 
181 
43 
32 
79 
67 
63 
55 
329 
146 



2,210.0 
393.0 
569.0 
195.0 

76.9 
194.0 

86.6 
420.0 
709.0 
765.0 
715.0 



43,800 
24,200 
33,900 
12,000 

4,580 
11,900 

5,320 
25,000 
43,600 
45,500 
44,000 



294, 000 



HONOLII RIVER AT KAIWIKI, NEAR HILO, HAWAII. 

Location. — One-half mile north of Kaiwiki and 6 miles west of Hilo, at an elevation 

of about 1,425 feet. 
Records available. — June 1, 1911, to December 31, 1912. 
Gage. — Vertical staff and Barrett & Lawrence hydro- chronograph; datum unchanged 

since gage was established. 
Channel. — Probably slightly shifting. 

Discharge measurements. — Made from small footbridge 40 feet below gage. 
Accuracy. — Results considered good. 



214 



WATER RESOURCES OF HAWAII, 1912. 

measurements of Honolii River at Kaiwiki, near Hilo, Hawaii, in 1912. 



Date 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Feb. 1 

Oct. 17 

21 


C. H.Pierce 

E. 0. Christiansen. 
do 


Feet. 
4.79 
6.68 
5.95 
10.0 
8.8 


Sec-ft. 
2.71 

272 

121 
2,100 
1,100 


Oct. 30 

Nov. 23 
30 

Dec. 13 
31 


E. O. Christiansen.. 

do 

do 


Feet. 
6.59 
5.93 
5.46 
5.24 
5.50 


Sec-ft 

255 

125 

52 


23 
23 


do 

do.... 


do 

do 


28 
63.3 











Daily gage height, in feet, of Honolii River at Kaiwiki, near Hilo, Hawaii, for 1912. 

[J. Goorko, observer.] 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1. 

2. 
3. 
4. 
5. 

6. 

7. 
8, 
9 
10. 

11. 

12. 
1>3; 
14. 
15. 

16 
17. 
18. 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



5.08 
5.04 
5.02 
5.00 
4.98 

4.97 
4.92 
4.90 
4.88 



4.83 
4.82 
4.8.0 
4.79 
4.78 

4.76 
4.75 
4.74 
4.72 
4.70 
4.68 



4.80 
4.80 
4.80 
4.80 
4.80 

4.80 
4.80 
4.80 
4.80 
4.80 

4.80 
4.(79 

4.89 
4.98 
4.95 

4.90 
4.84 
4.80 
4.91 
5.84 

8.13 
9.16 
8.41 
6.96 
6.09 

5.56 
5.74 



5.11 
5.13 
5.26 
5.33 
5.34 

6.02 
6.86 
6.84 
6.68 
5.93 

5.64 
6.39 
7.43 
6.28 
6.02 

5.84 
5.55 
5.60 
5.46 
5.38 

5.34 
5.25 
5.18 
5.12 
5.72 



8.46 
7.23 
7.32 
6.76 

6.41 
5.94 
5.77 
5.56 
5.72 



5.82 
6.28 
5.90 
5.75 
5.88 

6.14 

6.01 
5.94 
6.22 
6.35 

6.28 
6.09 
5.81 
5.58 
5.47 



5.46 
5.70 
5.92 
6.55 
6.36 

6.55 

5.86 
5.62 
5.49 
5.38 

5.30 
5.24 
5.20 
5.16 
5.08 

5.06 
5.09 
5.03 
5.00 
4.99 

5.04 
5.04 
5.00 
5.00 
5.00 

5.00 
5.02 
5.01 
5.00 
4.98 
4.96 



4.94 
4.99 
5.00 
5.00 
4.99 

4.97 
4.97 
5.03 
5.40 
5.53 



5.62 
5.62 
5.44 
5.30 

5.22 
5.17 
5.09 
5.07 
5.14 



5.80 
5.80 



5.30 

5.67 
6.39 
5.85 
5.73 

5.58 
5.43 
5.32 
5.28 
5.78 

6.62 
5.92 
5.72 
6.07 
5.57 

5.41 
5.34 
5.32 
5.26 
5.23 



5.12 
5.10 
6.09 
5.74 
5.42 

5.28 
5.24 
5.24 
5.25 
5.24 

5.20 
5.20 
5.29 
5.32 
5.49 

5.27 
5.19 
5.23 
5.42 
5.23 

5.15 
5.10 
5.08 
5.16 
5.12 

5.08 
5.41 
5.25 
5.22 
5. 17 
5.23 



6.03 
6.63 
8.49 
8.74 
6.25 

5.99 
6.42 
5.74 
5.63 
5.48 



5.78 
5.44 
5.47 
5.41 

5.41 
5.30 
5.28 
5.20 
5.16 

5.15 
5.15 
5.08 
5.06 
5.10 

5.09 
5.06 
5.04 
5.02 

5.47 



5.39 
5.22 
5.26 
5.20 
5.12 

5.10 
5.05 
5.04 
5.05 
5.11 

5.39 

5.48 
5.28 
5.33 
5.56 

6.47 
6.52 
5.68 
6.03 
6.60 

6.01 

7.96 
8.25 
6.38 
5.80 

7.29 
8.62 
7.43 
7.39 
6.47 
6.91 



6.19 
6.02 
7.49 
6.05 



5.64 
5.51 
5.50 
7.63 
9.01 



7.30 
6.37 
6.10 

5.74 
5.59 

6.92 
7.19 
7.06 
0.54 
5.96 

5.89 
5.86 
6.00 
5.78 
5.60 

5..51 
5.48 
5.91 
5.81 
5.94 



6.72 
6.83 
6.28 
5.77 
5.56 

5.52 
5.82 
5.87 
5.64 
5.45 

5.34 
5.26 
5.22 
5.25 
5.32 

5.50 
5.35 
5.37 

5.85 
6.42 

6.17 
7.90 
9.54 
7.51 
6.19 

6.94 
6.14 

5.77 
5.69 
5.58 
5.62 



Daily discharge, in second-feet, of Honolii River at Kaiwiki, near Hilo, Hawaii, for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


52.0 


3.0 


80 


120 


53.0 


8.6 


35 


19 


140 


45 


170 


44.0 


3.0 


76 


100 


86.0 


10.0 


82 


17 


263 


27 


138 


37.0 


3.0 


54 


90 


120.0 


11.0 


210 


151 


937 


31 


509 


32.0 


• 3.0 


35 


180 


245.0 


11.0 


108 


92 


1,070 


25 


144 


28.0 


3.0 


24 


200 


204.0 


11.0 


90 


48 


182 


19 


127 


25.0 


3.0 


18 


190 


245.0 


9.8 


69 


33 


132 


17 


78 


23.0 


3.0 


19 


921 


110.0 


9.8 


50 


29 


216 


14 


59 


20.0 


3.0 


31 


427 


75.0 


13.0 


37 


29 


92 


13 


58 


18.0 


3.0 


38 


454 


57.0 


46.0 


33 


30 


76 


14 


557 


16.0 


3.0 


39 


293 


44.0 


62.0 


■ 97 


29 


56 


18 


1,250 


16.0 


3.0 


138 


214 


35.0 


140.0 


261 


25 


54 


45 


448 


13.0 


2.8 


318 


123 


29.0 


75.0 


120 


35 


97 


56 


206 


12.0 


6.6 


312 


96 


25.0 


75.0 


89 


34 


51 


33 


153 


11.0 


10.0 


274 


66 


22.0 


51.0 


147 


37 


54 


38 


92 


10.0 


9.0 


121 


89 


16.0 


35.0 


68 


57 


47 


66 


71 



Dec. 



1 

2 
3 
4 
5 

6 

7 
8 
9 
10 

11 
12 
13 
14 
15 



284 
310 
188 



61 
103 
111 

78 
52 

39 
31 
27 
30 
37 



ISLAND OF HAW An. 



215 



Daily discharge, in second-feet, of Honolii River at Kaiwiki, near Hilo, Hawaii, for 

1912— Continued. 



Bay. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 


9.8 
7.8 
7.0 
6.2 
5.4 

4.2 
3.8 
3.0 
2.8 
2.6 

2.2 

2.0 
1.8 
1.4 
1.0 
.8 


7.0 
4.6 
3.0 
7.4 
106.0 

760.0 
1,360.0 
895.0 
346.0 
151.0 

66.0 
92.0 
90.0 
90.0 


78 
210 
490 
188 
138 

106 
65 
72 
53 
44 

39 
30 
23 
19 

89 
150 


103 
188 
116 
93 
113 

161 
136 
123 
176 
202 

188 
151 
102 
69 
54 


15.0 
16.0 
13.0 
11.0 
11.0 

13.0 
13.0 
11.0 
11.0 
11.0 

11.0 
12.0 
12.0 
11.0 
10.0 
9.4 


27.0 
23.0 
16.0 
15.0 
20.0 

30.0 
30.0 
30.0 
40.0 
40.0 

35.0 

130.0 
110.0 
100.0 
100.0 


47 
39 
37 
31 
28 

30 
31 
32 
33 
34 

35 
34 
30 
29 

28 
19 


32 
24 
28 

48 
28 

21 
17 
16 
22 
19 

16 
47 
30 
27 
23 
28 


47 
35 
33 
25 
22 

21 
21 
16 
15 
17 

16 
15 
13 
12 
54 


227 
238 
83 
140 
256 

136 
685 
816 
208 
100 

445 
1,000 
490 
477 
227 
331 


334 
415 
376 
243 
127 

114 
110 

134 

97 
72 

59 
56 
118 
102 
123 


58 


17 


40 


18 


43 


19 


108 


20 


216 


21 


166 


22 


660 


23 


1,670 


24 


515 


25 


170 


26 


340 


27 


161 


28 -- 


96 


29 


85 




69 


31 


75 







Monthly discharge of Honolii River at Kaiwiki, near Hilo, Hawaii, for 1912. 



Month. 



Discharge in second-feet. 



Maximum. Minimum. Mean 



Run-off 
(total in 
acre-feet). 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



52 

1,360 

490 

921 

245 

140 

261 

151 

1,070 

1,000 

1,250 

1,670 



1,670 



0.8 

2.8 

18.0 

54.0 

9.4 

8.6 

19.0 

16.0 

12.0 

13.0 

56.0 

27.0 



13.5 
139.0 
109.0 
184.0 
50.2 
43.8 
64.3 
34.9 
128.0 
204.0 
218.0 
193.0 



115.0 



8,000 
6,700 
10,900 
3,090 
2,610 
3,950 
2,150 
7,620 
12,500 
13,000 
11,900 



83,300 



KAWAINUI RIVER AT PEPEEKEO, NEAR HILO, HAWAII. 

Location. — At highway bridge on government road 7 miles north of Hilo. 
Records available. — December 4, 1911, to March 30, 1912. 

Gage. — Vertical staff; read twice daily, at 6 a. m. and 5 p.m.; datum unchanged. 
Discharge measurements. — Made by wading at low water, and from highway 

bridge during high water. 
Accuracy. — Records fair. 



Discharge measurements of Kawainui River at Pepeekeo, near Hilo, Hawaii, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Feb. 4 

Oct. 9 

12 


C.H.Pierce 

E. O. Christiansen . 
do 


Feet. 

-0.1 
.70 
.90 


Sec.-ft. 
0.49 
9.5 
13.2 


Oct. 19 

19 
Dec. 24 


E. O. Christiansen. 

do... 

do 


Feet. 
1.89 
1.76 
3.6 


Sec.-ft. 
64 
53.2 
40.2 



One measurement made in January, 1913, used to define rating curve. 



216 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, of Kawainui River at Pepeeheo, near Kilo, Hawaii, for 1912. 

[M. Matsuna, observer.] 



Day. 


Jan. 


Feb. 


Mar. 


Day. 


Jan. 


Feb. 


Mar. 


1 


2.1 

1.75 

1.7 

1.6 

1.55 

1.5 

1.45 

1.45 

1.4 

1.4 

1.35 

1.3 

1.2 

1.1 

1.1 


0.35 
.3 

.08 
.00 
.00 

.00 
.00 
.00 
.00 
.00 

.00 
.00 

.7 
.65 
.1 


2.0 

2.2 

1.95 

2.0 

1.8 

1.65 

1.8 

1.7 

1.7 

1.6 

3.35 
3.95 
3.0 
3.05 
2.35 


16 


1.0 

1.0 

.9 

.85 
.8 

.7 

.7 

.6 

.55 

.5 

.45 

.5 

.5 

.4 

.4 

.4 


0.00 

.00 

.00 

.85 

1.65 

2.95 
3.85 
3.9 
2.85 
2.1 

2.25 
2.4 
2.05 
2.25 


2.2 


2 


17 


2.55 


3 


18 


4.1 


4 


19 . 


2.75 


5 


20.. 


2.35 


6 


21 


2.2 


7 


22.. 


1.95 


8 


23... 


2.2 


9 


24... 


1.9 


10 


25... 


1.85 


11 


26 


1.75 


12 


27 


1.7 


13 


28 


1.6 


14 


29 


1.5 


15 


30 


1.45 




31 













Daily discharge, in second-feet, of Kawainui River at Pepeeheo, near Eilo, Hawaii, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Day. 


Jan 


Feb. 


Mar. 


1 


82.0 
55.0 
51.0 
44.0 
41.0 

38.0 
36.0 
36.0 
33.0 
33.0 

30.0 
28.0 
24.0 
20.0 
20.0 


4.0 
3.4 
1.5 
1.0 
1.0 

1.0 
1.0 
1.0 
1.0 
1.0 

1.0 
1.0 
9.0 
8.0 
1.6 


73.0 
96.0 
69.0 
73.0 
58.0 

48.0 
58.0 
51.0 
51.0 
44.0 

347.0 
480.0 
270.0 
281.0 
127.0 


16 


16.0 
16.0 
13.0 
12.0 
11.0 

9.0 
9.0 
7.5 
7.0 
6.0 

5.5 
6.0 
6.0 
4.6 
4.6 
4.6 


1.0 

1.0 

1.0 

12.0 

48.0 

259.0 
457.0 
468.0 
237.0 
82.0 

106.0 
138.0 
77.0 
106.0 


96.0 


2 


17 


171.0 


3 


18 


514.0 


4 


19 


215.0 


5 


20 


127.0 


6 


21 


96.0 


7 


22 


69.0 


8 


23 


96.0 


9 


24 


65.0 


10 


25 


62.0 


11 


26 


55.0 


12 


27 


51.0 


13 


28 


44.0 


14 


29 


38.0 


15 


30 


35.0 




31 













Monthly discharge of Kawainui 


River at Pepeekeo, near Hilo, Hawaii, for 


1912. 


Month. 


Discharge in second-feet. 


Run-ofl 
(total in 
acre-feet). 


Maximum. 


Minimum. 


Mean. 


January 


82.0 
468.0 
514.0 


4.6 

1.0 

35.0 


22.9 
70.0 
129.0 


1,400 


February 


4,030 


March 


7,660 







STATIONS NOS. 1, 2, 3, AND 4 AT PIIHONUA, NEAR HILO, HAWAII.* 

Location. — About 1£ miles above Hilo, Hawaii, and about one-half mile north of 
Kaumanu Road. 

Records available. — February 2 to April 18 and July 30 to August 28, 1912. 

Gage. — Gage heights were depth of water measured from a reference point. New 
datum for station No. 4 on July 30; relation to former datum unknown. Regular 
gages numbered to tenths installed July 30, 1912. Gage No. 1 discontinued, as 
all water had been diverted for Hilo supply. Gage No. 2, zero of old gage: shank 
of nail at gage height 0.45 foot on new gage. Gage No. 3, zero of old gage: shank 
of nail at gage height 0.45 foot on new gage. Gage No. 4, old gage out; no rela- 
tion determined between old and new gages. 

1 Stations Nos. 1, 2, 3, and 4 on streams not named. 



ISLAND OF HAWAII. 



217 



Discharge measurements. — Made by wading. 

Channels. — Fair; beds of streams composed of small cobbles and gravel; probably- 
shifting. 
Cooperation. — Maintained in cooperation with the county engineer of Hawaii. 

Discharge measurements at station No. 1 at Piihonua, near Hilo, Hawaii, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Feb. 2 


C. H. Pierce 


Feet. 
0.68 


Sec.-ft. 
0.93 


July 30 




.94 









September 9: Water of spring piped away. 

Daily gage height, in feet, at station No. 1 at Piihonua, near Hilo, Hawaii, for 1912. 



Day. 


Feb. 


Mar. 


Apr. 


Day. 


Feb. 


Mar. 


Apr. 


Day. 


Feb. 


Mar. 


Apr. 


1 




0.71 
.71 
.72 
.70 
.69 

.58 
.63 


0.84 

""."83 

""'."83 

.82 

'".'si 

.82 
.80 


11 


0.77 

.77 
.78 
.78 
.78 

.82 
.69 
.69 
.71 
.69 


0.89 
.90 

.92 

1.02 

.96 

.94 

"".'98' 
.96 

.96 


"6." 77 

.76 

.73 

.74 
.73 


21 


0.81 
.76 


0.95 

.94 
.94 
.93 
.92 

.92 
.92 
.92 
.92 
.92 
.87 




2 


0.68 
.71 

.72 
.75 

.77 
.77 
.77 
.77 
.77 


12 


22 




3 


13 


23 




4 


14 


24 


.79 
.75 

.73 
.73 

.72 
.72 




5 


15 


25 




6 


16 


26 




7 


17 


27 




8 


18 


28 




9.. 


19 


29 




10 


20 


30 








31 















Discharge measurements at station No. 2 at Piihonua, near Hilo, Hawaii, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Feb. 2 


C. H. Pierce 


Feet. 
0.71 
1.45 


Sec.-ft. 
0.47 


Sept. 9 


E. O . Christiansen 


1.53 









Daily gage height, in feet, at station No. 2 at Piihonua, near Hilo, Hawaii, for 1912. 



Day. 


Feb. 


Mar. 


Apr. 


July. 


Aug. 


Day. 


Feb. 


Mar. 


Apr. 


July. 


Aug. 


1 




1.00 
.74 
.72 
.70 
.76 

.74 
.72 
.77 

.87 
.96 

'"2." 66' 

.94 






0.78 

.78 


16 

17 

18 

19 

20 

21 

22 

23 


0.67 
.76 
.76 
.80 

1.00 

1.67 
1.57 


0.97 

"'i.'50' 

.88 
.81 

.81 
.75 
.71 

.72 
.72 

.68 
.66 
.69 
.71 
.70 
1.45 


0.91 
1.15 
.96 




0.77 


2 

3 


0.77 
.77 
.68 
.69 

.66 
.67 
.70 

.72 
.65 

.71 

.72 
.72 
.74 
.70 


0.70 
.75 




.55 


4 










5 


.89 
.75 




.45 

.43 
.42 
.42 
.42 
.42 






.55 


6 






.49 


7 






.65 


8 


1.07 
1.30 
1.15 










9 


24 

25 

26 

27 

28 

29 

30 


1.27 
.92 

.81 
.77 
.75 
1.16 








10 








11 






.51 


12 






.42 








13 


1.00 
.90 








.55 


14 




.58 








15 




6.48 

.48 












31 















218 WATER RESOURCES OF HAWAII, 1912. 

Discharge measurements at station No. 3 at Piihonua, near Hilo, Hawaii, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Feb. 2 


C. H. Pierce 


Feet. 
0.88 
1.58 


Sec.-ft. 
1.10 


Sept. 9 


E. 0. Christiansen 


1.67 







Daily gage height, in feet, at station No. 3 at Piihonua, near Hilo, Hawaii, for 1912. 



Day. 


Feb. 


Mar. 


Apr. 


July. 


Aug. . 


Day. 


Feb. 


Mar. 


Apr. 


July. 


Aug. 


1 




1.03 
.92 
.94 
.93 
.90 

.87 
.81 
.88 






0.92 
.92 


16 

17 

18 

19 

20 

21 

22 

23 


0.86 
.85 
.86 
.87 
.93 

1.18 
2.02 


1.11 

'"'i.~38" 
1.08 
1.02 

1.01 
.98 
.96 
.95 
.95 

.93 
.93 
.93 
.94 
.94 
1.40 


1.06 
1.27 
1.12 




0.92 


2 

3 


0.88 
.89 

.88 
.87 

.87 
.87 
.87 
.87 
.85 

.89 
.89 
.90 
.90 
.90 


0.94 
.95 




.77 


4 










5 


1.05 
.95 




.65 

.65 
.65 
.65 
.65 
.65 






.78 


6 






.82 


7 






.85 


8 


1.07 










9....... 


24 

25 

26 

27 

28 

29 

30... 


1.35 
1.09 

1.02 

1.00 

.98 

1.11 








10 


.96 
.98 
1.19 
1.79 
1.12 


1.33 










11 






.85 


12 






.65 
.65 
.92 








13 


1.12 
1.03 








.86 


14 








15 




0.74 
.70 












31 













Discharge measurements at station No. 4 at Piihonua, near Hilo, Hawaii, in 1912. 



Date. 


Hydrographer. 


Velocity. 


Feb. 2 


C. H. Pierce 


No flow. 


Sept. 9 




Do. 









Daily gage height, in feet, at station No. 4 at Piihonua, near Hilo, Hawaii, for 1912. 



Day. 


Feb. 


Mar. 


Apr. 


July. 


Aug. 


Day. 


Feb. 


Mar. 


Apr. 


July. 


Aug. 


1.. 




1.50 
1.58 
1.59 
1.60 
1.51 

1.42 
1.40 
1.34 

1.49 
1.54 
1.62 
2.23 
1.79 






1.05 
1.15 


16....... 

17 

18 

19 

20,. 

21 

22 

23 


(a) 

(a) 
(a) 
(a) 

(a) 

1.11 

1.89 


1.71 

" "1.83" 

1.75 
1.64 

1.62 
1.61 
1.60 
1.58 
1.57 

1.56 
1.54 
1.57 
1.58 
1.56 
1.97 


1.64 
1.71 
1.70 




1.30 


2 

3 


0.37 
.23 

.28 
.10 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 


1.54 
1.49 




1.32 


4 










5 . 


1,52 
1.49 




1.02 

1.01 
1.00 
.91 
.81 
.70 






1.53 


6 






1.58 


7 






1.6*7 


8 


1.63 
1.74 
1.75 










9 


24 

25 

26 

27 

28 

29 

30 


1.79 

1.82 

1.76 
1.72 
1.72 
1.49 








10 








11 






1.10 


12 






.47 








13 


1.70 
1.69 








1.00 


14 




1.50 








15 




1.08 
1.03 


1.08 










31 















a Channel dry. 



ISLAND OF HAWAII. 219 

STATIONS AT 2,700-FOOT LEVEL i IN THE FOREST BACK OF HILO, HAWAII. 

The perennial streams of the island of Hawaii are in general 
restricted to two zones, one comprising an area about 10 miles wide 
in the Kohala and Hamakua districts, and the other, including an 
area about 12 miles wide, situated in the Hilo district between the 
South Branch of Wailuku River on the southeast and Maulua Gulch 
on the northwest. 

The run-off from the Kohala-Hamakua district at ordinary stages 
is now diverted into ditches serving the sugar lands of the north coast 
of the island. It is proposed to divert the run-off of the Hilo district 
at an elevation above the 2,500-foot contour and deliver it by a 
high-line ditch to serve the semi-arid lands of Kau on the south side 
of the island. Limited funds have restricted operations so far to 
the area bounded by the South Branch of Wailuku River and the 
North Branch of Kawainui River. All the streams of this region 
originate on the east slope of Mauna Kea. Above the wet belt, 
comprising about 75 square miles, the surface is composed of porous 
lava rock that absorbs practically all the rainfall. 

Ten rain gages, which are read at monthly and bimonthly inter- 
vals, are maintained at approximately 500-foot intervals of elevation 
from sea level to an elevation of 5,000 feet in. this district. 

STATION RECORDS. 

Location.— On the line of a trail cut out approximately on the 2,700-foot contour, 
in the forest above Hilo, Hawaii, during September and October, 1911. The trail 
is about 12 miles in length, trends in a general northerly and southerly direction, 
and crosses 83 streams having appreciable channels, from the South Branch of the 
Wailuku to the North Branch of Kawainui River. A gaging station is maintained 
on each of these streams, whether perennial or not, at the trail crossing. Begin- 
ning at the South Branch of the Wailuku with No. 1 the stations are numbered 
consecutively northward to No. 87, except for a break of 6 numbers between sta- 
tions No. 18 and No. 25. A camp maintained near the middle of the zone under 
observation is reached by a foot trail, 3^ miles long, from the end of the Kaiwiki 
Homestead road. 

Records available. — Stations 1-12, October 1, 1911, to December 31, 1912. 
Station 12a, November 30 to December 31, 1912. 
Stations 13-18, 25-26, October 1, 1911, to December 31, 1912. 
Stations 27-41, September 28, 1911, to December 31, 1912. 
Stations 42-47, September 26, 1911, to December 31, 1912. 
Stations 48-50, September 31, 1911, to December 31, 1912. 
Stations 51-52, October 7, 1911, to December 31, 1912. 
Stations 53-65, October 10, 1911, to December 31, 1912. 
Stations 66-68, October 21, 1911, to December 31, 1912. 
Stations 69-74, November 13, 1911, to December 31, 1912. 
Stations 75-86, November 14, 1911, to December 31, 1912. 
Station 86a, November 18, 1912, to December 31, 1912. 
Station 87, November 14, 1911, to December 31, 1912. 

1 Aneroid readings gave elevation of 2,500 feet. More accurate determinations made later by topogra- 
phers of U. S. Geol. Survey gave elevations 200 to 280 feet higher. The correct elevation of the survey 
camp at station No. 80 is 2,750 feet. 



220 



WATER RESOURCES OF HAWAII, 1912. 



Gages. — Vertical staffs. Two observers have been continuously employed to read 
these 83 gages twice a day, except at such times when it was impossible to cross 
the streams at high water. The men alternated trips, north and south from the 
camp, and different observers were employed at different times. 

Discharge measurements. — Made by wading. 

Accuracy. — The total run-off for 1912 for all the stations was found to be 179,000 
acre-feet, and that part which was determined from the good stations amounted 
to 173,000 acre-feet, leaving only 3 per cent of the total that might be very much 
in error. Although the estimated discharge forms quite a large percentage of the 
total discharge for the 83 stations, the mean monthly discharge for all the streams 
is probably correct within less than 25 per cent. See also notes to daily discharge 
tables. 



Discharge measurements at station No. 1 at 2,700-foot level, near Hilo, Hawaii, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Aug. 13 
Sept. 27 
Nov. 21 




Feet. 

-0.62 

-1.17 

.82 

1.47 


Sec.-ft. 
0.26 


do , 


.06 


do 


32.5 


Dec. 27 


do 


65.7 









Note. — Channel in bedrock; smooth. Stream flows in one channel at all stages and is permanent. 
This station is on the South Branch or principal tributary of Wailuku River. 

Daily gage height, in feet, at station No. 1 at 2,700-foot level, near Hilo, Hawaii, for 

1912. 



[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofi, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















-1.05 




-0.40 

- .60 


1.75 




2 


















3 


0.18 
.12 

.08 

.05 
.05 
.08 
.05 
.02 

- .15 

- .25 

- .38 

- .55 

- .70 

- .85 




0.10 

- .06 

- .18 


0.48 
.65 
.69 

.71 






0.29 

.08 

- .05 

- .22 

-".'35' 

- .49 

- .05 








1.59 


4 


1.38 
.91 


-6." 45" 
-".'42" 


+ .21 

- .70 

-".'45" 

- .41 

- .35 

- .28 


"i.'oo" 

.94 
.90 
.62 
.45 

.22 
.40 
.20 
.15 
- .05 

.10 


- .98 
-1.00 

-1.05 

-i.'i2* 

-"."45' 

- .76 

- .18 
+ .04 

- .16 


-i.'46" 

""."62" 
.49 

1.08 

"i.'so' 

1.50 
1.08 


1.05 


5 


.61 


6 


.52 


7 




- .30 


.55 


8 






1.00 


9 




.10 
.15 

.21 

.75 

1.00 

1.12 

.99 

.72 
.96 








.70 


10... 


1.28 

1.24 
1.00 

'".'59' 

.35 

.44 
.40 

.72 
.64 
.52 






.40 


11 






.19 


12 








- .94 

- .61 


.10 


13 


.40 


.40 


.14 


- .10 


14 


.08 


15 




.40 


.01 


- .45 

- .62 


.18 


16 




1.38 


.22 


17 


- .20 


.30 




.02 


18 








- .48 


- .10 

- .17 

- .28 

- .22 

- .25 

- .45 

- .65 

- .90 
-1.17 
-.1. 25 
-1.25 

- .25 


.48 

.88 

"i.74" 
1.04 

.64 


1.25 

"i.*22" 

.82 
.65 
.71 


- .08 


19... 


-1.20 






- .05 






.21 


20 


0.24 


.85 

.82 
.52 
.49 










21 






.20 


- .39 


-i.'is' 

-1.18 
-1.00 
-1.02 

-1.05 

- .35 


.48 


22 








23 






- .11 




- .60 
+ .10 

- .24 

- .41 

- .59 

- .60 




24 








25 






.29 

.12 
- .01 
— . .14 


.68 

.80 
.72 
.71 


- .30 


- .21 

- .45 
+ .11 

- .10 


.44 

.35 
.20 


1.25 


26 








27 






1.48 


28 






1.02 


29 






- .20 
.11 






.78 


30 












"i.'ie" 


.48 




31 








- .40 

































ISLAND OF HAW An. 



221 



Daily discharge, in second-feet, at station No. 1 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


NoV. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


112. 00 

94.80 
79. 60 
65.20 
52.00 

41.00 
36.60 
32.20 
27.80 
23.50 

19.60 
18.40 
17.20 
16.00 
14.80 


0.40 
.40 

2.50 
11.00 
13.00 

13.90 
14.80 
15.70 
16.60 
13.00 

17.50 

22.00 
27.00 
29.00 
39.00 


7.20 
5.92 
7.20 
6.40 
5.92 

4.10 
2.66 
12.00 
16.60 
13.60 

12.60 
11.40 
46.00 
86.40 
208. 00 


16 


13.60 
12.60 
8.10 
6.72 

5.47 

4.43 
3.60 
2.90 
2.29 
1.74 

1.20 
1.00 

.80 
.64 
.52 
.40 


36.20 
52.50 
67.00 
85.00 
85.00 

85.00 
85.00 
85.00 
85.00 
79.00 

54.00 
39.00 
33.80 
27.00 
20.50 


122. 00 


2 


17 


124. 00 


3 


18... 


154. 00 


4 


19 


184. 00 


5 


20 


140. 00 


6 


21 


107 00 


7 


22 


67.00 


8 


23 


45.00 


9 


24 . 


27.00 


10 


25... 


56.20 


11 


26 


37.80 


12 .. 


27 


25.00 


13 


28 


24.40 


14 


29 


31.00 


15 


30 


22.00 




31 


25.00 











Daily discharge, in second-feet, at station No. 1 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1.. 
2.. 
3.. 

4.. 
5.. 

6.. 
7.. 
8.. 
9.. 
10.. 

11.. 
12.. 
13.. 
14.. 
15.. 

16.. 
17.. 
18.. 
19.. 
20.. 

21.. 
22.. 
23.. 
24.. 
25.. 

26.. 
27.. 
28.. 
29.. 
30.. 
31.. 



13.0 
13.0 
13.0 
11.0 
11.0 

10.0 
10.0 
11.0 
10.0 
9.0 



5.0 
3.5 
2.2 
1.2 



(a) 

(?) 

(a) 
(a) 
(a) 
(a) 

(a) 
(a) 



(o) 



(a) 
(a) 
(a) 



[3 

(a) 
(a) 

(a) 



(a) 

(a) 
(a) 

(a) 
fa) 
(a) 
(a) 
14 

60 
100 
130 
80 
60 

50 
40 
30 
20 



15.0 
13.0 
11.0 
7.9 
5.9 

5.1 
4.3 
8.0 
11.0 
12.0 

13.0 
31.0 
41.0 
46.0 
41.0 

28.0 
39.0 
37.0 
37.0 
35.0 

34.0 
23.0 
22.0 
19.0 
16.0 

11.0 
8.8 
6.6 
5.6 
11.0 
60.0 



40.0 
50.0 
40.0 
60.0 
80.0 

37.0 
34.0 
31.0 
28.0 
25.0 

23.0 
21.0 
19.0 
16.0 
12.0 

9.0 
5.6 
6.8 
8.1 
8.0 

8.0 
7.0 
7.0 
5.6 

4.3 

4.2 
4.2 
4.0 
3.8 
3.6 
3.3 



3.0 
3.0 
3.0 
3.0 
3.0 

3.0 
3.1 
3.1 
3.2 
3.2 

3.2 
3.3 
3.3 
3.3 
3.3 

3.8 
4.3 
4.6 
4.9 
5.2 

5.6 
5.6 
5.6 
5.6 
5.5 

3.0 
11.0 

7.2 
7.0 
6.0 



6.0 
8.0 
16.0 
11.0 
8.1 

5.3 
4.6 
3.8 
2.6 
8.1 

40.0 
20.0 
12.0 
10.0 
9.0 

8.0 
7.0 
6.0 
5.0 
4.0 

3.4 
2.6 
1.8 
11.0 
8.0 

5.1 
3.2 
1.9 
1.8 
1.0 
1.0 



0.2 

30.0 

20.0 

13.0 

1.2 

2.0 
2.9 
3.2 
3.8 
4.6 

2.4 
.3 
1.7 
2.3 
2.9 

1.7 
2.2 
2.7 
3.0 
1.0 

.5 
.1 
.1 
.2 
.2 

.2 
3.8 
3.0 
2.0 
1.0 
3.0 



25.0 
30.0 
60.0 
80.0 
41.0 

39.0 
37.0 
26.0 
21.0 
18.0 

14.0 
19.0 
13.0 
12.0 
10.0 



11. 



5.3 
5.0 
2.9 



3.3 
1.8 
1.0 
.2 
.2 

.2 
.2 
.1 
.2 
2.9 



5.9 
10.0 

6.2 
12.0 

10.0 
40.0 
21.0 
36.0 
35.0 

40.0 
70.0 
120.0 
81.0 
43.0 

27.0 
135.0 
90.0 
80.0 
60.0 
48.0 



82 
90 
110 
70 
61 

20 
26 
22 
44 
110 

100 

85 
67 
44 
30 

60 
80 
52 
60 
51 

34 

27 
29 
24 
20 

18 
13 
40 
30 
21 



sa o 

90.0 
72.0 
43.0 
25.0 

23.0 
24.0 
41.0 
29.0 
19.0 

13.0 
11.0 
7.2 
11.0 
13.0 

14.0 

9.0 

7.6 

13.0 

40.0 

21.0 
60.0 
90.0 
80.0 
52.0 

70.0 
66.0 
42.0 
32.0 
20.0 
15.0 



a Channel dry. 

Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station 50. 



222 



WATER RESOURCES OF HAW An, 1912. 



Monthly discharge at station No. 1 at 2,700-foot level, near Silo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December 

1912 

January 

February 

March. 

April 

May 



Mean dis- 
charge in 
second- 
feet. 



23.10 
38.50 
52.80 



4.21 
20.10 
21.20 
34.90 
19.50 



Run-off 
(total in 
acre- 
feet). 



1,420 
2,300 
3,260 



259 
1,170 
1,300 
2,080 
1,200 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean dis- 
charge in 
second- 
feet. 



4.40 
7.59 
3.72 
16.80 
31.70 
50.70 
36.50 



20.90 



Run-off 
(total in 
acre- 
feet). 



264 
467 
229 
1,000 
1,950 
3,120 
2,240 



15,300 



Discharge measurements at station No. 2 at 2,700-foot level, near Silo, Hawaii, in 1912. 



Date. 




Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Aug. 13 
Sept. 27 
Nov. 21 


E . O . Christiansen 


Feet. 

0.47 

.48 

.55 

.61 


Sec-ft. 
0.02 


...do . 




do 


.03 


Dec. 27 


....do... 


.10 









Note. — Channel of sand, mud, and gravel; shifting. One channel at all stages. 

Daily gage height, in feet, at station No. 2 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dee. 


1 
















0.45 




0.60 

.58 


0.60 




2 


















3 


0.44 

.42 
.41 

.42 
.42 
.45 
.41 
.41 

(a) 

(a) 

(a) 

(a) 

(a) 

(a) 


""(«)"" 


0.39 
.36 
.35 


0.44 
.51 

.54 

.59 






0.61 

.56 
.50 

.49 








0.60 


4 


0.76 




.51 
.45 

""."48" 

.45 
.55 
.55 


"".W 

.59 
.61 
.52 
.52 

.51 

.58 
.55 
.55 
.52 

.55 


.51 
.50 

.50_ 

"".ho 

"".52 

.51 
.55 
.50 
.51 


"".'56' 

""."56" 
.50 
.55 

""."60* 
.60 
.51 


.61 


5 


.52 


6 


.70 




.51 


7 


"1" 

(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 

0.63 


.35 


.52 


8 








.46 
.45 
.50 


.60 


9 


.40 
.40 

.41 
.51 
.69 
1.00 

.70 
.76 

""ei" 

.61 
.52 
.49 








.56 


10 


.60 

.54 
.54 

""."50" 

.52 

.64 

"""."56" 

.54 
.55 

.60 
.55 
.55 






.51 


11 






.51 


12 








.46 

.48 


.48 


13 


.51 


.30 


.51 


.46 


14 


.48 


15 




.28 


.48 


.50 

.48 


.52 


16 




.59 


.55 


17 


.40 


.30 




.51 


18 






.49 


.54 
.51 
.50 

.50 
.50 
.49 
.49 

.49 
.49 
.49 
.48 
.60 


.55 
.55 

""."64" 
.54 

.50 


.60 

"".ho 

.55 
.52 
.55 


.50 


19 


(a) 
(a) 

(a) 
la) 
(a) 
(a) 


.38 






.52 


20 










21 




.20 


.55 


""'."38" 
.40 
.50 
.50 

.49 
.50 


.60 


22. 




23. . 


.32 




.50 

.71 

.72 
.55 
.45 
.45 




24 




25 




.45 

.44 
.42 
.42 
.41 
.60 


.56 

.61 
.58 
.55 


.28 
"".2\ 


.51 

.48 
.48 
.45 


.55 

.52 
.51 


.61 


26 








27 


fa) 

(a) 
(a) 
(a) 




.62 


28 


.55 


29 






.55 


30 








""."55" 


.60 




31 







































a Channel dry. 

Note.— Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
near station No. 50. 



ISLAND OF HAWAII. 



223 



Daily discharge, in second-feet, at station No. 2 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.02 






11 


0.02 
.02 
.02 
.05 
.05 

.05 
.05 
.05 
.05 


0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 


""o.'io 

.10 
.15 

.10 
.10 
.15 
.15 
.10 


21.... 




0.10 
.10 
.10 
.10 
.10 


0.05 


2 






12 


22.. 






3 






13 


23 






4 






14 


24 






5 


0.05 

.05 
.05 
.05 
.10 
.10 




15 


25 




.10 




16 


26 




.05 




27 










17 


.05 




28 










18 


.05 




29 










19 






30 










20 


.05 




31 














.05 













Daily discharge, in second-feet, at station No. 2 a{ 2,100-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 








1 








0.10 


0.10 




2 








I 










3 








l 


0.60 










0.10 


4 


(a) 
(a) 






0.30 












.10 


5 






(a) 






0.10 








6 






.20 












7 








(a) 






.10 








8 
















.10 


9 








l 


l 










10 






0.10 


i 


; ; ■"■;: 










11 






















12 




















.10 
. - 10 




13 




0.20 
.50 
.40 

.20 

.30 


















14 




















15 




















16 






















17 






















18 


















.10 




f9 






















20 


0.10 


















.10 




21 




.10 














.10 


22 
















1 




23 


















i 


24 












.20 






.10 


i 


25 


















.10 


26 






.10 






.20 










27 


















.10 


28 '.. 






















29 






















30 




.10 












.10 




.10 1 


31 






(») 




























1 



a Channel dry. 
Monthly discharge at station No. 2 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



October... 
November. 
December. 



1911. 



January . . 
February. 

March 

April 

May 



1912. 



Mean 
discharge 
in second- 
feet. 



-0.03 

- .08 

.10 



.02 
.20 
.25 
.10 
.05 



Run-off 
(total in 
acre-feet). 



1.84 
4.76- 
6.15 



1.23 

11.50 

15.40 

5.95 

3.07 



Month. 



1912— Continued. 

June 

July. 

August 

September 

October 

November 

December 



The year. 



Mean 
discharge 
in second- 
feet. 



0.01 
.10 
.10 
.20 
.30 
.20 
.10 



.14 



Run-off 
(total in 
acre-feet). 



0.60 
6.15 
6.15 
11.90 
18.40 
11.90 
6.15 



98.40 



224 



WATER RESOURCES OF HAWAII, 1912, 



Discharge measurements at station No. 3 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.] 



Date. 



Aug. 13. 
Sept. 27. 



Gage 
height. 



Feet. 
-0.04 
- .12 



Discharge. 



Sec.-ft. 
1.05 
.72 



Date. 



Nov. 21. 
Dec. 27. 



Gage 
height. 



Feet. 
0.72 
1.11 



Dis- 
charge. 



Sec.-ft. 
13.0 
26.4 



Bed of stream, composed of gravel and cobbles, is fairly smooth and probably permanent. One channel 
at all stages. This stream is tributary to Wailuku River. 

Daily gage height, in feet, at station No. 3 at 2,700-foot level, near Hilo, Hawaii, for 19 12. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1. 




(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 

(a) 
.08 
.08 

(a) 

(a) 
(a) 

(<*) 
-.75 
.25 












-0.02 




0.25 
.11 


1.11 




2. 
















3 


0.12 
.08 
.05 

.06 
.08 
.12 
.10 
.05 

-.02 
-.08 
-.10 
-.15 

-.18 

-.20 


0.17 
.09 
.02 

""."62" 


0.41 
.62 
.71 

.73 






0.49 
.22 
.02 

- .10 

-'."25' 

- .35 
.20 








1.05 


4 


1.03 
.70 


+6.' 30* 
+ "."34" 


.33 

.08 

""."64" 
.02 
.05 
.00 


'"i."20' 

.90 
.96 

.78 
.54 

.32 
.42 
.26 


- .10 

- .12 

- .14 

-"."22" 

""."65" 

.01 
.28 
.14 
.05 


"""."98" 

""".*64* 
.54 
.92 

""".*85" 
.70 
.64 


1.02 


5 


.70 


6 


.61 


7 


.64 


8.... 






.92 


9 


.16 

.15 

.22 
.80 
.98 
1.02 
.89 

.72 
.99 

'■"."99" 

.97 
.78 
.68 








.62 


10 


1.19 

1.13 
.96 

""."75" 

.68 

.46 

""."64' 
.66 
.49 

.78 
.71 
.63 






.50 


11. 






.39 


12. 








- .09 

- .04 


.28 


13 


.30 


.28 


.14 


.14 


14... 


.14 


15 




.20 


- .01 


.05 
.01 




.38 


16 






.99 

""i.'oi" 


.51 


17... 


.10 


.20 






• .52 


.25 


18 






.04 


.10 

.08 
.02 

.05 

.02 

.00 

-.02 

-.10 
-.12 
-.15 
-.18 
.35 


.98 


.18 


19 


-.25 
-.26 

-.28 
-.34 
-.38 
-.40 


.20 






.38 


20 








"'l.*29* 

.86 

.70 


.98 

.73 
.66 
.71 




21 




.10 


- .15 


-\"io" 

- .10 

- .11 

- .12 

- .14 
.08 


52 


22 




23 


.05 




- .35 
.12 

- .25 

- .28 

- .35 

- .40 




24.. . 




25 




.41 

.21 
.10 
.02 
+.09 
.12 


.77 

.85 
.80 
.79 


.00 

*+.'6i" 


.10 

+ .31 

.01 

+ .02 


.54 

.40 
.30 


i.oi 


26 








27 


-.40 
-.42 
-.45 
-.50 




1.11 


28 


.81 


29 






.64 


30 








"*.*8i" 


.52 




31 




+.15 

































a Channel dry. 
Daily discharge, in feet, at station No. 3 at 2,700-foot level, near Hilo, Hawaii, for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 . 


40.0 
34.0 
30.0 
26.0 
22.0 

19.0 
16.0 
14.5 
13.0 
11.5 


0.5 
.5 
2.5 
6.4 
13.0 

13.3 
13.6 
14.2 
14.5 
12.7 


4.1 
2.5 
1.2 
1.2 
1.1 

.9 
1.2 
2.6 
5.2 

2.7 


11 


10.0 
8.2 
6.4 
4.9 
3.6 

2.7 
2.5 
2.3 
2.0 
1.7 


13.0 
14.5 
16.0 
19.0 
22.8 

22.0 
22.0 
24.0 
26.0 
28.0 


3.0 

2.6 

16.6 

34.8 

70.0 

46.0 

58.0 
70.0 
82.0 
62.0 


21 


1.5 
1.4 
1.2 
1.1 
1.0 

.8 
.7 
.6 
.5 
.4 
.5 


30.0 
30.8 
31.6 
31.6 
31.6 

19.0 
13.6 
13.0 
8.6 
6.1 


42.0 


2.. 


12 


22 


32.0 


3... 


13 


23 


22.8 


4... 


14 


24 


13.3 


5 


15... 


25 


34.0 


6 . 


16 


26.... 


19.6 


7 


17... 


27 


13.0 


8 . 


18 


28 


6.1 


9... 


19 


29 


16.3 


10... 


20 


30 


10.0 






31 


13.0 









ISLAND OF HAW An. 



225 



Daily discharge, in second-feet, at station No. 3 at 2,700-foot level, near Hilo, Hawaii, for 

1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




(a) 
(a) 
(a) 

(«) 
(a) 

(a) 

n. 

(a) 
(a) 

(a) 
(a) 
2.3 
2.3 

(a) 

(a) 
(a) 
(«) 
i. 2 

15.0 
30.0 
40.0 
20.0 
10.0 

6.0 
5.0 
5.0 
4.0 


4.00 
3.50 
3.30 
2.40 
1.70 

1.70 
1.70 
2.10 
2.50 
3.00 

3.90 
16.00 
21.00 
23.00 
18.00 

14.00 
21.00 
21.00 
21.00 
21.00 

21.00 
15.00 
12.00 
9.30 
6.60 

4.00 
2.50 
1.70 
2.40 
3.00 
15.00 


10.00 
8.00 
7.00 
11.00 
13.00 

14.00 
40.00 
37.00 
35.00 
30.00 

27.00 
21.00 
18.00 
14.00 
12.00 

7.00 
9.00 
11.00 
12.00 
8.00 

15.00 
13.00 
11.00 
13.00 
15.00 

17.00 
16.00 
16.00 
10.00 
15.00 


15.00 
15.00 
18.00 
23.00 
30.00 

13.00 
10.00 
8.00 
7.00 
6.00 

5.00 
5.00 
4.90 
4.30 
3.70 

3.10 
2.50 
3.00 
3.60 
3.20 

2.80 
2.40 
2.00 
1.80 
1.50 

1.50 
1.60 
2.00 
2.40 
2.80 
3.10 


""4*9" 
"6.T" 

"4.'60' 
"*3." 60* 

"z.m 

2.50 
" "2. 50" 


4.00 
5.00 
-8.00 
3.90 
1.70 

.80 
.60 
.30 
.20 
3.60 

30.00 

10.00 

2.90 

3.00 

.80 

.80 
.80 
.70 
.70 
.60 

.60 

.40 

.20 

2.70 

X.00 

.30 
.20 
.20 
.10 
.10 
.10 


0.10 
.20 
10.00 
5.30 
2.30 

2.10 
1.90 
1.70 
2.10 
1.50 

1.20 
.90 
1.20 
1.60 
2.10 

1.50 
1.70 
1.90 
1.70 
1.40 

1.00 

.80 
.80 
.80 
.70 

.60 
2.30 
2.00 
1.50 
1.00 
1.50 


18.00 
20.00 
33.00 
40.00 
30.00 

19.00 
21.00 
15.00 
8.90 
7.00 

5.20 
6.80 
4.40 
4.00 
3.60 

3.30 
2.90 
2.50 
2.30 
1.70 

2.10 
1.70 
1.50 
1.40 
1.10 

.80 
.70 
.60 
.50 
5.70 


4.20 
2.60 
1.70 

.80 
.70 

.60 
.50 
.40 
.80 
1.20 

1.50 
4.60 
2.90 
1.20 
1.20 

1.00 

8.60 

21.00 

25.00 

30.00 

30.00 
35.00 
40.00 
38.00 
18.00 

13.00 
40.00 
35.00 
35.00 
30.00 
16.00 


26.00 
30.00 
40.00 
25.00 
21.00 

16.00 
11.00 
8.90 
20.00 
40.00 

38.00 
17.00 
13.00 
11.00 
10.00 

22.00 
25.00 
22.00 
25.00 
21.00 

14.00 
12.00 
13.00 
11.00 
8.90 

6.40 
4.90 
15.00 
12.00 
8.60 


20.00 


2 




35.00 




2.7 
2.3 
2.0 

2.1 
2.3 
2.7 
2.5 
2.0 

1.4 
.9 
.8 
.6 
.5 

.4 
.4 
.3 
.3 
.3 

.2 
.2 


24.00 


4 


23.00 


5 


13.00 


6. 


10.00 


7 


11.00 


8 


20.00 


9 


11.00 


10 


8.20 


11 


6.20 


12 


4.60 


13 


2.90 


14 


2.90 


15 


6.10 


16 


8.40 


17 


4.20 


18 


3.40 


19 


6.10 


20 


12.00 


21 


8.60 


22 


25.00 


23 


40.00 


24 


30.00 


25 


22.00 


26 


25.00 


27 


26.00 


28 


16.00 


29 


11.00 


30 


10. 00 


31 


10.00 







a Channel dry. 

Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the. camp near station No. 50. 

Monthly discharge at station No. 3 at 2,700-foot level, near Hilo, Hawaii, for 1911-12 . 



Month. 



1911 

October 

November 

December 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



9.03 
17.10 
22.20 



.83 
4.96 
9.62 
16.20 
6.36 



Run-off 

(total in 

acre-feet). 



558 
1,020 
1,370 



51 

285 



964 
391 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



4.00 
2.56 
1.79 
8.82 
14.20 
18.80 
15.20 

18 



Run-off 
(total in 
acre-feet). 



238 

. 157 

110 

525 

873 
1.120 



3,240 



14694°— wsp 336—14- 



-15 



226 WATER RESOURCES OF HAWAII, 1912. 

Discharge measurements at station No. 4 at 2,700-foot level, near Hilo, Hawaii, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographef. 


Gage 
height. 


Dis- 
charge. 


Aug. 13 
Sept. 27 


E. O.Christiansen.. 
do 


Feet. - 
0.74 

.74 


Sec.-ft. 

0.15 

.14 


Nov. 21 
Dec. 27 


E. 0. Christiansen. 
do 


Feet. 
0.78 
.80 


Sec.-ft. 
0.51 

.77 



Note.— Bed of stream of sand and gravel, smooth, probably slightly shifting. One channel at all stages. 
This stream is tributary to Wailuku River. 

Daily discharge, in second-feet, at station No. 4 at -2, 700-foot level, near Hilo, Hawaii, for 

1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


1.08 
.08 
.94 
.80 
.73 

.66 
.66 
.59 
.52 
.45 


(a) 

n 

(a) 
(a) 

(a) 
(a) 

(«) 
(a) 

(a) 


(a) 
(a) 
(a) 

(a) 
(a) 

(a) 

(a) 
.24 
.45 
.24 


11 


0.45 
.45 
.38 
.38 
.31 

.24 

(a) 

(a) 

(a) 

(a) 


(a) 
(a) 
(a) 
.31 
.31 

(a) 
(a) 
.24 
.31 
.38 


0.38 

.24 

.66 

1.08 

1.92 

1.92 
1.08 
1.08 
1.36 
.66 


21 


(a) 
\a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 
(a) 


0.45 
.52 
.59 
.66 
.66 

.45 
.38 
.45 
.24 
(a) 


0.45 


2 


12 


22 


.24 


3 


13 


23 


.80 


4 


14 


24 


5 


15 


25 


6 


16 


26 


.45 


7 


17 


27 


.38 


8 . 


18... 


28 


.24 


9 


19 


29 


.52 


10 . 


20 


30 


.38 






31 


.45 









a Channel dry. 

Daily gage height, in feet, at station No. 4 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and KuznetsofE, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 . ..' 
















0.71 




0.S2 
.79 


0.80 




2 


















3 


0.72 

.70 
.70 

.70 
.70 
.72 
.70 
.70 

.70 
.70 
.69 
.69 

.68 

.65 




0.49 


6.60 

.66 
.66 

.64 






0.80 

.75 
.74 

.71 

""".'69' 
.68 
.75 








0.78 


4 


1.22 
1.05 


"6." 28" 

""'."25" 


.79 

.72 

----- 

.72 
.75 
.74 


"6." 89' 

.84 
.91 
.90 
.80 

.75 
.79 
.75 
.75 
.74 

.79 


.75 

.74 

.74 

""."72" 

"".'75' 

.75 
.78 
.78 
.76 


"".'S4' 

""."75' 
.75 
.80 

'"'.'85' 
.82 
.78 


.80 


5 






.75 


6 






.72 


7 




.35 


.72 


8 






.78 


9 




.38 
.38 

.54 
.70 
.79 
.90 
.80 

.62 
.89 








.74 


10 


.75 

.74 
.68 






.74 


11 


.72 


12. 








.71 
.75 


.72 


13 




.50 


.71 


.71 


14 


.61 
.69 

.68 

""."68" 
.70 
.69 

.80 
.76 
.68 


.80 


.72 


15 


.49 


.69 


.76 

.72 


.75 


16 




.80 


.78 


17 


.60 


.51 




.72 


18 








.75 


.78 
.78 
.75 

.75 
.80 
.78 
.75 

.74 
.73 
.72 
.71 
.85 


.78 
.80 

""."86" 

.85 

.82 


.78 

"".'80 

.79 
.75 
.75 


.74 


19 .. 


.64 
.62 

.62 
.62 
.61 
.60 






.56 






.78 


20 


0.83 


.72 

.70 
.02 
.66 










21 




.50 


.52 


""."68" 
.68 
.70 
.68 

.66 
.75 


.75 


22 




23 


.50 




.50 
.65 

.55 

' .55 

.55 

.52 




24 




25 




.60 

.60 
.58 
.52 
.51 
.64 


.71 

.76 

.72 
.72 


.50 

""."45" 


.60 

.58 
.60 
.56 


.75 

.78 
.75 


.75 


26 








27 . 


.62 
.61 
.61 
.60 




.80 


28 


.75 


29 






.72 


30 








""."74" 


.78 




31 




.35 

































ISLAND OF HAWAII. 



227 



Daily discharge, in second-feet, at station No. 4 at 2,700-foot level, near Hilo, Hawaii, for 

1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.25 
.25 
.25 
.10 
.10 

.10 
.10 
.25 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


(a) 
(a) 


0.10 
.10 
.05 

(a) 

(a) 


0.50 
.20 
.05 
.10 
.10 

.05 
4.50 
4.00 
2.00 

.45 

.40 
.10 
.10 
.05 
.10 

.10 
.10 
.10 
.10 
.10 

.80 
.50 
.10 
.10 
.15 

.50 
.25 
.25 
.20 
.10 


0.50 
.50 
1.00 
6.68 
6.00 

4.30 

2.00 

.50 

.20 

.20 

.20 
.20 
.20 
.80 
.50 

.50 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


"6.'05" 

.05 
.05 


0.10 

.40 
.80 
.45 
.40 

.15 
.10 
.10 
.10 
.45 

1.00 
.40 
.15 
.30 
.10 

.10 
.10 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


0.15 

.20 

1.00 

.75 
.25 

.20 
.40 
.25 
.45 
.40 

.30 
.15 
.45 
.50 
.50 

.25 
.35 
.45 
.60 
.30 

.20 
.10 
.10 
.10 
.10 

.10 
.45 
.30 
.20 
.10 
.20 


0.50 
.80 
5.00 
3.50 
2.05 

1.35 

2.35 

2.20 

.80 

.60 

.45 
.75 
.45 
.45 
.40 

.75 
.70 
.65 
.65 
.45 

.45 
.80 
.65 
.45 
.40 

.40 
.30 
.25 
.15 
1.50 


1.10 
.75 
.60 
.45 
.40 

.40 
.30 
.25 
.30 
.45 

.45 
.65 
.65 
.50 
.50 

.30 
1-00 
.65 
.80 
.80 

.80 
3.00 
5.00 
1.65 
1.50 

1.10 
6.00 
4.00. 
4.00 
2.00 
.40 


0.80 
.50 
4.00 
2.00 
1.35 

.50 
.45 
.45 
.80 
5.00 

4.00 

1.50 

1.10 

.65 

.20 

.80 
2.00 

.65 
1.50 

.80 

.75 
.45 
.45 
.45 
.45 

.65 
.45 
1.00 
.80 
.65 


2.00 


2 


4.00 


3 


.65 


4 


.80 


5 


.45 


6 


.25 


7 ..... 






.25 


8 


(a) 




.65 


9 


.40 


10 


"(a)" 
1.20 

3.00 
5.00 
6.00 
4.00 
2.00 

1.00 
.50 
.50 
.30 


(a) 

.10 
.10 

.75 

2.20 

.80 

.05 
2.05 
3.00 
4.00 

.25 

.10 
.05 
.10 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
2.00 


.40 


11 


.25 


12 


.25 


13 


.15 


14 


.25 


15 


.45 


16 


.65 


17 


.25 


18 

19 


.40 

.65 


20 


1.00 


21 


.45 


22 


2.00 


23 


5.00 


24 


3.00 


25 


.45 


26 


.60 


27 


.80 


28 


.45 


29 


.25 


30 


.20 


31 


.20 







a Channel dry. 

Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days* for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 4 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.31 
.20 
.49 



Run-off 

(total in 

acre-feet). 



19.30 
11.80 
30.20 



5.53 
46.60 
32.00 
32.10 
49.80 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



0.05 
.19 
.32 
1.01 
1.31 
1.17 



.64 



2.98 
11.70 
19.70 
60.10 
80.60 
69.60 
54.70 



465.00 



Discharge measurements at station No. 5 at 2,700-foot level, near Hilo, Hawaii, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Aug. 13 


E. O. Christiansen ] 


Feet. 
0.24 


Sec.-ft. 


Sept. 27 


do 


(a) 
0.20 


Nov. 21 


do 


.59 
.60 


Dec. 25 


do 


.21 









a Channel dry. 

Note.— Bed of stream of sand, silt, and gravel; probably shifting. One channel at all stages. 
This stream is tributary to Wailuku River. 



228 



WATER RESOURCES OP HAWAII, 1912. 



Daily gage height, in feet, at station No. 5 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayefi, Selitonott, and KuznetsofE, observers.] 



Day. " 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















(a) 




0.25 
.25 


0.52 




2 


















3 


0.58 
.55 
.54 

.55 
.55 
.58 
.56 
.54 

.51 
.50 
.50 
.44 
.40 

.35 


(a) 


(a) 

(a) 
(a) 


0.41 
.42 
.46 

.48 






6.60 
.55 
.50 

.48 

• '[a)" 
(a) 
(a) 








0.55 


4 


0.76 
.50 


""(«)*" 

"(«)" 


0.60 
(a) 

""\*50" 
.45 
.42 
.49 


"6." 59' 

.55 
.59 

.50 
.50 

.44 
.50 
.40 
.40 
.35 

.36 


(a) 
(a) 

(a) 

"(a)" 

""(«)" 

(a) 
.32 

(a) 
(a) 


""."55' 

""."56" 
.50 

.59 

""."55" 
.52 
.39 


.61 


5 


.52 


6 


.48 


7 


"la)" 

(a) 
(a) 

(a) 

(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
.71 


(a) 


.48 


8 






.55 


9 


(a) 
(a) 

(a) 
0.47 
.47 
.60 
.49 

.50 
.72 

"".'60' 

.59 
.42 
.51 








.54 


10 


.50 

.50 

.48 






.54 


11 






.52 


12 


(a) 






(a) 
.12 


.45 


13 


0.40 


.50 


.45 


14 


.31 
.42 

.41 

.50 

.50 
.44 

.50 
.44 
.41 




.46 


15 




.38 


(a) 


.35 
(a) 


.52 


16 




.55 


.56 




(») 


.41 




.46 


18 






.34 


(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 

(a) 

(<*) 

(a) 
(a) 
.38 


.50 
.50 

'""."56* 
.52 

.50 


.52 

""55" 

.59 
.55 
.52 


.45 


19 


(a) 
(a) 

(a) 
(a) 
(a) 
(a) 


(a) 






.51 


20 










21 




w 


(a) 


"W 

(a) 

(«) 

(a) 

(a) 

.35 


.52 


22 




23 


(a) 




(a) 

(a) 

(a) 
(a) 
(a) 
(a) 




24 




25 




.46 

.31 
.00 
.00 
.00 
.50 


.51 

.52 
.52 
.52 


(a) 


(a) 
(a) 


.55 

.55 
.52 


.58 


26 








27 


(a) 
(a) 




.61 


28 


.54 


29 






.54 


30 


(a) 










™:ft- 


.56 




31 




(a) 


































a Channel dry. 

Daily discharge, in second-feet, at station No. 5 at 2,700-foot level, near Hilo, Hawaii, for 

1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


0.38 
.35 
.31 
.28 
.24 

.21 
.21 
.20 
.20 
- .20 


0.10 
.10 
.10 
.12 
.15 

.15 
.16 
.17 
.18 
.19 


0.15 
.12 
.11 
.12 
.14 

.12 
.11 
.14 

.18 
.14 


11 


0.20 
.20 
.19 
.18 
.17 

.16 
.15 
.15 
.15 
.15 


0.19 
.20 
.20 
.20 
.20 

.20 
.20 
.20 
.20 
.20 


0.16 
.14 
.20 
.28 

.28 

.48 
.25 
.25 
.26 
.26 


21 


0.15 
.14 
.13 
.12 
.11 

.10 
.10 
.10 
.10 
.10 
.10 


0.20 
.21 
.21 
.21 
.21 

.20 
.20 
.21 
.19 

.18 


0.24 


2 


12 


22 


.21 


3 


13 


23 


.20 


4 


14 


24 

25 


.18 


5 


15 


.28 


6 


16 


26.. 


.20 


7 


17 


27... 


.20 


8 


18 


28... . 


.20 


9 


19 


29. 


.21 


10 


20.... 


30 


.20 






31 


.20 









ISLAND OF HAWAII. 



229 



Daily discharge, in second-feet, at station No. 5 at 2,700-foot level, near Hilo, Hawaii, for 

1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.20 
.20 
.20 
.15 
.15 

.15 
.15 
.20 
.15 
.15 

.10 
.10 
.10 
.05 
.05 

.05 
.05 
.05 
(a) 

(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 

i 


(a) 
(a) 

(°) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 

(*) 

(a) 

(a) 
(a) 
(a) 
(a) 
0.30 

.40 
.50 
1.00 
.60 
.40 

.30 
.20 
.10 
.10 


(a) 
(a) 
(a) 
(a) 
(a) 

(a) 

(a) 
(a 
(a) 
(a) 

(a) 
0.10 
.10 
.20 
.10 

.10 
.30 
.30 
.20 
.20 

.20 
.05 
.10 
.10 
.10 

(a) 
(a) 

. .10 

.40 


0.20 
.10 
.05 
.05 
.10 

.10 
.20 
.15 
.10 
.10 

.10 
.10 
.10 
.05 
.05 

.05 
.05 
.10 
.10 
.05 

.10 
.05 
.05 
.10 
.10 

.10 
.10 
.10 
.10 
.10 








(a) 






0.10 




2 














3 






0.20 
.15 
.10 

.10 










0.15 


4 


a 35 

.10 


"■(a)"" 

(a) 
(a) 


0.20 
(a) 

""."16" 
.05 
.05 
.10 


" "6." 26" 

.15 
.20 
.10 
.10 

.05 
.10 
.05 
.05 
.05 

.05 


(a) 

(a) 

(a) 

(a) 
(a) 


""."15" 

"*."io" 

.10 
.20 

"""."is" 

.10 

.05 


.20 


5 


.10 


6 


.10 


7 


.10 


8 


.15 


9 








.15 


10 








.15 


11 








.10 


12 


(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
.(a) 

(a) 

(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 
(a) 






(a) 


.05 


13 


0.05 


.10 


.05 


14 


.10 


15. . 


.05 
""."05' 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 


(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 


.05 
(a) 




16 




.15 


.15 


17... 


.10 


18 


"(if 

(a) 
(a) 
(a) 

(a) 
.05 


(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 

Hi 


0.10 

.10 

""15" 

.10 
.10 


.10 

"""."i5 _ 

.20 

.15 
.10 


.05 


19 


.10 


20 




21 


.10 


22 




23 




24... 




25 


.15 

.15 
.10 


.20 


26 




27 


.20 


28 


.15 


29..... 






.15 


30 


"*".*I6" 


.15 




31 

























a Channel dry. 

Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp near 
station No. 50. 

Monthly discharge at station No. 5 at 2,700-foot level, near Eilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second 

feet. 



0.18 

.18 
.20 



.07 
.13 
.09 
.09 

.07 



Run-ofC 

(total in 

acre-feet). 



10.90 
10.70 
12.30 



4.30 
7.48 
5.53 
5.36 
4.30 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November :...... 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.02 
.05 
.08 
.08 
.20 
.15 
.15 



.10 



Run-off 
(total in 
acre-feet). 



1.19 
3.07 
4.92 
4.76 
12.30 
8.93 
9.22 



71.00 



230 WATER RESOURCES OP HAWAII, 1912. 

Discharge measurements at station No. 6 at 2,700-foot level, near Hilo, Hawaii, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Aug. 13 

Sept. 27 
Nov. 21 


E . . Christiansen 


Feet. 


Sec.-ft. 
(a) 
(a) 


do 




do. . 


0.10 
.38 




Dec. 27 


..... do 


6.05 









a Channel dry. 

Note. — Bed of stream of sand, silt, and gravel; probably shifting. One channel at all stages. 
This stream is tributary to Wailuku River. 

Daily gage height, in feet, at station No. 6 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















(a) 




0.25 
.. .20 


0.40 




2 


















3 


0.32 
.31 
.30 

.32 
.34 
.38 
.35 
.32 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 


—(a)" 

(a) 


(a) 
(a) 
(a) 


0.32 
.33 

.34 

.40 






0.58 
.32 
.22 

.22 

"(a)" 
(a) 
(a) 










0.34 


4. 


0.70 
.50 


"(a)" 

'"(a)" 


0.58 
(a) 

""."ii" 
.41 
.35 
.41 


"6.' 55" 

.40 
.44 
.34 
.24 

.24 
.30 
.25 
.30 
25 

(a) 


(a) 
(a) 

(a) 

"(a)"' 

"(•)"" 

(a) 
(a) 
(a) 
(a) 


"""32" 

"{a)" 
(a) 
.35 

""."39" 
.36 
.30 


.32 


5..... 


(a) 
(a) 


6 


7 .... 


—(a)" 

(a) 
(a) 

(a) 
(a) 

(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
0.52 


(a) 


(a) 
.31 


8 . 






9 .. 


(a) 
(a) 

(«) 

0.29 
.36 
.41 
.34 

.31 
.66 

""".58' 

.51 

.41 
.49 








.20 


10 


.41 

.38 
.34 

"\"3i" 

.40 






(a) 

(a) 
(a) 
(a) 


11 • 






12 . 






~ 


(a) 
(a) 


13 


(a) 


(a) 


.40 


14 


(a) 
.21 


15 




(a) 


(a) 


.15 

(a) 


16.. .. 




.38 


.18 


17... 


'"."42' 
.45 
.46 

.46 
.41 
.39 


(a) 


(a) 




(a) 


18 






.14 


(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 

(a) 

(a) 
(a) 
(a) 
.28 


.35 
.32 

'".'38' 
(«) 

(a) 


.34 

""."36' 

.20 
(a) 
.30 


19 


(a) 

(a) 

(a) 
(a) 
(a) 
(a) 


(a) 






20 










21 


""(«)" 


(a) 


(a) 


(a) 
(a) 

(a) 

.18 


.20 


22... 




23 




(a) 

.49 

(a) 
(a) 
(a) 
(a) 




24 


(a) 
"(a)" 


"(a)" 

(a) 
(a) 
(a) 




25 . 




.42 

(a) 
fa) 

(a) 


.43 

.50 
.51 
.50 


(a) 

(a) 
(a) 


.32 


26 








27 


(a) 
(a) 
(a) 
(a) 




.36 


28 


(a) 
.21 


29 






30 .. 








"".'36' 


.35 








(a) 

































a Channel dry. 

Daily discharge, in second-feet, at station No. 6 at 2,700-foot level, near Hilo, Havjaii, 

for 1911. 



Day. 



l 
2 
3 

4 
5 

6 
7 
8 
9 
10 



Oct. 


Nov. 


Dec. 


0.10 


(a) 


0.01 


.10 


(a) 


(°) 


.10 


0.01 


(a) 


.10 


.01 


.02 


.10 


.02 


.02 


.10 


.03 


(a) 


.10 


.03 


(a) 


.10 


.03 


.01 


.05 


.03 


.03 


.05 


.04 


.02 



Day. 



11 
12 
13 
14 
15 

16 
17 

IS 
19 



Oct. 


Nov. 


Dec. 


0.05 


0.04 


0.02 


.05 


.04 


.03 


.04 


.05 


.05 


.03 


.05 


.10 


.03 


.05 


.10 


.02 


.05 


.05 


.01 


.05 


.05 


.01 


.05 


.05 


(a) 


.05 


.05 


(a) 


.05 


.05 



Day. 


Oct. 


Nov. 


21 


(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 

( a ) 
(a) 


0.05 
.05 
.05 
.05 
.05 

.05 
.02 
.02 
.01 
.01 


22 


23 


24 


25 


26 


27 


28 


29 


30 


31 





Dec. 



0.03 
.01 

(a) 

(a) 
.05 

.05 
.02 
.02 
.05 
.05 
.05 



a Channel dry. 



ISLAND OF HAWAII. 231 

Monthly discharge at station No. 6 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



October . . . 
November. 
December . 



1911. 



January . . 
February. 

March 

April 

May 



1912. 



Mean 
discharge 
in second- 
feet. 



0.03 
.03 
.03 



.01 
.10 
.10 



Run-off 

(total in 

acre-feet). 



2.26 
2.06 
1.95 



.62 
5.72 
6.15 

4.76 
.62 



Month. 



1912— Continued. 

June 

July 

August 

September. 

October 

November 

December 



The year . 



Mean 
discharge 
in second- 
feet. 



0.00 
.02 
.02 
.03 
.04 
.01 
.01 



.04 



Run-off 
(total in 
acre-feet). 



0.00 
1.23 
1.23 
1.79 
2.46 
.60 



25.80 



Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discbarge 
for periods for which gage heights are missing estimated by means of rainfall; diagram prepared from 
rainfall record at camp near station No. 50. 

Discharge measurements at station No. 7 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.) 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage, 
height. 


Dis- 
charge. 


Aug. 13. 


Feet. 
0.33 
.21 


Sec.-ft. 
0.04 


Nov. 21 


Feet. 
0.39 
.44 


Sec.-ft. 
0.06 


Sept. 27 


Dec. 27 


.11 











Note. — Bed of stream of sand, silt, and gravel; probably shifting. One channel at all stages. 
This stream is tributary to the Wailuku River. 

Daily gage height, in feet, at station No. 7 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Seiitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.42 




0.39 
.35 


0.42 




2 


















3 


0.32 
.31 
.30 

.35 
.36 
.40 
.39 
.36 

.31 
.30 
.28 
.25 
.10 

(a) 


""(a)" 
(a) 


0.33 
.31 

.30 


0.31 
.33 
.38 

.41 






0.48 
.45 
.42 

.39 

""."35" 
.32 

.38 








0.42 


4 


0.69 
.50 


*"(«)" 
"la)" 


.42 
.30 

"'"."35' 
.30 
.35 

.38 


"'6.' 44" 

.45 

.58 
.42 
.40 

.35 
.39 
.32 
.35 
.32 

.36 


.25 

.21 

.21 

"".'2l' 

"".'32" 

.31 
.35 
.31 
.32 


■•■■-■ 

""."35' 
.38 
.49 

""."46" 
.42 

.48 


.42 


5 


.38 


6 


.36 


7 


(a) 
(a) 

(a) 

(a) 

0.24 
.20 
.15 

.10 
(a) 
(a) 

.32 

.74 


.30 


.35 


8 






.41 


9 


.32 

.32 

.35 
.41 
.49 
.75 
.49 

.41- 
.59 

"".'57' 

.51 
.39 

.44 








.38 


10 


.44 

.44 
.36 

"".'32* 

.38 

.36 

"".'46" 
.41 
.40 

.48 
.44 
.38 






.34 


11 






.32 


12 








.24 
.32 


.30 


13 


.40 


0.23 


.38 


.28 


14 


.29 


15 




.20 


.35 


.36 
.38 


.34 


16 




.40 


.36 


17 


.30 


.30 




.30 


18... 






.38 


.34 
.32 
.30 

.31 
.29 
.25 
.22 

.21 
.21 
.21 
.20 
.40 


.38 
.40 

'"."48" 
.42 

.40 


.40 

""".'44" 

.39 
.38 
.40 


.31 


19 


(a) 
(a) 

(a) 
(a) 
(a) 
(a) 


.24 






.34 


20 










21 




.28 


.34 


""."26' 

.20 
.23 
.20 

.20 
.34 


40 


22 




23 


.25 




.32 

.38 

.25 
.20 
.20 
.20 




24 




25 




.39 

.32 
.30 
.29 
.29 
.34 


.41 

.44 
.44 
.44 


.21 

""."26' 


.31 

.28 
.32 
.29 


.38 

.35 
.32 


.42 


26 








27 


(a) 
(a) 
(a) 
(a) 




42 


28 


.38 


29 






.31 


30 








""."46' 


.40 




31 




(a) 

































a Channel dry. 



232 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 7 at 2,700-foot level, near Hilo, Hawaii, for 

1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


0.10 
.10 
.10 
.10 
.10 

.10 
.10 

.05 
.05 
.05 


0.01 
.01 
.01 
.03 
.05 

.05 
.05 
.05 
.05 
.05 


0.01 
.01 
.01 
.02 
.02 

.03 
.03 
.03 
.03 
.03 


11.... 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 


0.05 

.05 
.05 
.10 
.10 

.05 
,05 
.05 
.05 
.05 


0.03 

.03 
.05 
.10 
.10 

.05 
.05 
.10 
.10 
.05 


21 


0.05 
.05 
.04 
.04 
.03 

.03 
.02 
.02 
.01 
.01 
.01 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.02 


0.05 


2 


12 


22 


.05 


2 


13 


23 


.03 


4 


14 


24.. 


.01 


5 


15 


25 


.05 


6 


16 


26.. . 


.05 


7 


17 


27 


.04 


8 


18 


28 


.02 


9 


19 


29.. . . 


.05 


10 


20 


30 


.05 






31 


.03 



Daily discharge, in second-feet, at station No. 7 at 2,700-foot level, near Hilo, Hawaii, for 

1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.05 




0.05 
.05 


0.05 




2 


















3 














0.10 
.05 
.05 

.05 








0.05 


4 










0.30 




.05 

'"'.'05' 

"".'65* 
.05 








.05 


5 








0.05 
.05 


0.05 

.05 
.20 
.05 
.05 




.05 


.05 


6.. 


0.05 
.05 
.05 
.05 
.05 






.10 




.05 


7 








.05 
.05 
.10 


.05 


8 












.05 


.05 


9 












.05 


10 






.05 

.05 
.05 






.05 




11 




0.05 
.05 
.10 
.35 
.10 

.05 
.20 






.05 
.05 








12 














.05 


.10 

.05 
.10 




13... 






.05 




.05 






14 








.05 






15 






.05 
.05 






.05 


.05 
.05 




16 










.05 




.05 


.05 


17. 














18. 






.05 
.05 
.05 

.10 
.05 
.05 








.05 




.05 
.05 


.05 




19 
















20... 




0.35 


.15 

.10 
.05 
.05 












.05 

.05 
.05 
.05 




21 
















.05 


22 




















23.. 




















24 










.05 






.10 
.05 

.05 




25 






.05 


.05 

.05 
.05 
.05 










.05 
.05 


.05 


26 


















27 


















.05 


28 






















.05 


29 
























30 


















.05 


"".'65' 


.05 




31 






















1" 





















Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp 
near station No. 50. 



ISLAND OF HAWAII. 233 

Monthly discharge at station No. 7 at 2,700-foot level, near Hilo, Hawaii, for 1911^12. 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May ."'. 



dis- 
charge in 
second- 
feet. 



0.05 
.05 
.04 



.02 
.10 
.10 
.05 
.05 



Run-off 
(total in 
acre-feet). 



2.82 



1.23 
5.75 
6.15 
2.98 
3.07 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

D ecember 

The year 



Mean 
dis- 
charge in 
second- 
feet. 



0.02 
.05 
.05 
.07 
.20 
.15 
.05 



Run-off 
(total in 
acre-feet). 



1.19 
3.07 
3.07 
4.17 
12.30 
8.93 
3.07 



55.00 



Discharge measurements at station No. 8 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 13 


Feet. 
0.92 
.73 


Sec. ft. 
0.16 


Nov.21 


Feet. 
1.05 
1.19 


Sec.ft. 
0.84 


Sept. 27 


Dec. 27 


1.89 











Note. — Bed of stream composed of gravel and small cobbles; is fairly smooth; shifting; one channel at 
all stages. This stream is tributary to Wailuku River. 

Daily gage height, in feet, at station No. 8 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.80 




1.05 
.98 


1.05 




2 


















3 


0.76 
.75 

.74 

.76 

.78 
.81 
.79 
.75 

.72 
.71 
.70 
.70 
.50 

.41 


"(«)" 

(a) 


0.81 
.79 

.74 


0.71 

.74 

.84 

.86 






1.14 
1.10 
1.00 

.95 

"""."96" 

.85 
.85 








1. 12 


4 


1.19 
.90 


"b'.lo 
""".'35" 


.99 

.88 

'""."96" 
.88 
.90 
.90 


""i.'l9' 

1.14 
1.20 
1.10 
1.00 

.94 
1.01 

.99 
1.00 

.96 

.99 


.84 
.81 

.81 

\"80' 

"'"."85" 

.82 
1.02 

.85 

.85 


'T26' 

""."95' 
1.00 
1.20 

'"i."26" 
1.11 
.95 


1. 15 


5 


1.15 


6 


1.12 


7 


(a) 
(a) 

(a) 

(«) 
(a) 
(a) 
(a) 

(a) 

(o) 

(a) 

0.68 

1.01 


.70 


1.12 


8 






1.15 


9 


.78 
.74. 

.81 
.98 
.99 
1.32 
1.02 

.82 
1.01 

'T65' 

1.00 

.88 
.90 








1.14 


10 


1.11 

1.04 
.99 

""".'85' 
.99 

.90 

"""."89" 
.89 
.86 

1.05 
1.01 
.89 






1.11 


11 






1.04 


12 








.80 
.91 


.94 


13 


.81 


.50 


1.00 


.91 


14 


.92 


15 




.40 


.88 


.95 


1.01 


16 




1.15 


1.18 


17 


.72 


.65 




1.01 


18 






.91 


.95 
.91 
.89 

.95 

.85 
.82 
.79 

.75 
.75 
.74 
.74 
1.19 


1.08 
1.26 

*"i."i9" 

1.05 
.98 


1.16 

"i'.'u 

1.06 
1.02 
1.10 


1.02 


19 


(a) 
(a) 

(a) 
(a) 
(a) 
(a) 


.71 






1.05 


20 










21 




.60 


.81 


""'.'80" 
.80 
.80 
.80 

.79 
.90 


1 14 


22 




23 


.69 




.80 
.96 

.89 
.82 
.75 
.70. 




24 




25 




.88 

.82 
.78 
.75 
.71 
.81 


.96 

1.02 
1.02 
1.00 


.61 
'"'."59" 


.84 

.80 

84 

.80 


1.02 

.98 
.95 


1.18 


26 








27 


(a) 
(o) 
(a) 
(a) 




1.20 


28 


1.12 


29 






1.12 


30..... 










""i."02" 


1.00 




31 




.50 

































a Channel dry. 



234 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 8 at 2,700-foot level, near Kilo, Hawaii, for 

1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


2.88 
2.22 
1.68 
1.20 
.84 

.52 
.48 
.44 - 
.36 
.28 


(a) 

(a) 

0.01 

.05 

.17 
.44 
.84 
1.36 
.24 


0.05 
.03 
.02 
.03 
.05 

.02 
.02 
.02 
.05 
.02 


11 


0.24 
.20 
.18 
.17 
.15 

.15 

.14 
.12 
.10 
.05 


0.32 

.40 

.48 
.60 
.72 

.60 
.66 
.72 
.78 
.84 


0.04 

.01 

.24 

1.08 

1.60 

.12 
.72 
.60 
.90 

.28 


21 


0.05 
.05 
.05 
.03 
.01 

(a) 
(a) 
(a) 

00 

(a) 

(a) 


0.90 
.96 
1.02 
1.08 
1.20 

.56 

.28 
.28 
.17 
.05 


0.12 


2 


12 


22.. 


.12 


3.. 


13 


23.. 


.05 


4... 


14 


24... 


.05 


5 


15 


25 


.28 


6.. 


16... 


26.. 


.10 


7.. 


17 


27.. 


.05 


8.. 


18...... 


28.. 


.05 


9... 


19 


29... . 


.22 


10 


20 


30 


.20 








31 


.12 









a Channel dry. 

•Daily discharge, in second-feet, at station No. 8 at 2,700-foot level, near Kilo, Hawaii, for 

1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.03 
.03 
.03 
.02 
.02 

.03 
.05 
.05 
.05 
.02 

.01 

.01 
















1 
































0.7 

.8 
.8 
.8 
.8 
.8 

.8 
.8 
.8 
.8 


0.80 
.40 
.05 
.05 
.02 

.01 
.00 
.05 
.05 
.02 

.05 
.50 
.60 
3.35 
.70 

.10 
.70 
1.20 
1.00 
.90 

.60 
.15 
.20 
.20 
.15 

.10 
.04 
.02 
.01 
.05 
1.00 


0.50 
.05 
.01 
.02 
.10 

.15 
3.00 
2.50 
2.00 
1.30 

.85 
.55 
.60 
.10 
.55 

.20 
1.10 
.20 
.20 
.15 

.90 
.70 
.20 
.G5 
.45 

.70 
.70 
.60 
.30 
.70 


1.40 
1.70 
1.00 
1.90 
2.20 

.20 
.10 
.10 
.10 
.05 

.05 
.05 
.05 
.20 
.15 

.05 
.01 
.01 
.01 
.01 

.01 
.01 
.01 
.01 
.01 

.01 
.01 
.01 
.01 
.01 
.01 


0.01 
.01 
.01 
.01 
.01 

.01 
.01 
.01 
.01 
.01 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.05 
.10 
.05 
.05 
.05 


0.20 
1.00 
1.50 
1.20 
.60 

.40 
.30 
.20 
.15 
.15 

2.00 
1.00 

.60 
1.00 

.15 

.10 
.10 
.10 
.05 
.05 

.05 
.05 
.05 
.45 
.30 

.20 
.10 
.05 
.01 
.01 
.01 


0.05 
.05 

1.00 
.55 
.15 

.10 
.20 
.15 
.20 
.20 

.10 
.05 
.25 
.30 
.40 

.20 
.20 
.25 
.40 
.20 

.10 
.05 
.05 
.05 
.05 

.05 
.20 
.40 
.20 
.10 
.10 


0.80 
1.50 
3.00 
4.00 
1.90 

1.50 
2.00 
1.20 
.60 
.50 

.35 

.65 
.55 
.60 
.45 

.55 
.30 
.40 
.25 
.20 

.40 
.15 
.10 
.05 
.05 

.05 
.05 
.02 
.02 
1.90 


0.90 

.50 
.60 
.10 
.05 

.05 
.05 
.05 
.05 
.15 

.10 
.70 
.15 
.15 
.15 

.05 
2.00 
1.10 
2.65 
1.50 

1.50 
2.00 
4.00 
1.90 
.90 

.50 
5.00 
2.00 
2.20 
1.50 

.70 


0.90 

.20 
3.00 
1.50 
2.00 

.20 

.40 

.60 

2.00 

3.50 

3.00 
2.00 
1.30 
.40 
.10 

1.60 
2.00 
1.70 
2.00 
1.50 

.95 
.70 
1.20 
.90 
.70 

.50 
.40 
1.00 
.80 
.60 


2.00 


2 


2.50 


3 


1.35 


4 


1.60 


5 


1.60 


6 


1.35 


7 


1.35 


8 


1.60 


9 


1.50 


10 


1.30 


11 


.85 


12 


.35 


13 


.25 


14 


.30 


15 


.65 


16 


1.85 


17 


.65 


18 


.70 


19 


.90 


20 


1.50 


21 


1.50 


22 


2.50 


23 


5.00 


24 


3.00 


25 , 


1.85 


26 


2.00 


27 


2.00 


28 


1.35 


29 


1.35. 


30 


.80 


31 


.40 







Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 



ISLAND OF HAW An. 235 

Monthly discharge at station No. 8 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December 

1912 

January 

February 

March 

April 

May „ 



Mean 
discharge 
in second- 
feet. 



0.40 
.52 
.24 



.01 
.27 
.42 
.67 
.30 



Run-off 
(total in 
acre-feet). 



25.00 
31.40 
14.90 



.61 
15.50 
25.80 
39.90 
18.40 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year ... 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



0.63 
.39 
.20 
.80 
1.07 
1.26 
1.48 



,53 



3.75 
24.00 
12.30 
47.60 
65.80 
75.00 
91.00 



420. 00 



Discharge measurements at station No. 9 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 



Gage 
height. 



Dis- 
charge. 



Date. 



Gage 
height. 



Dis- 
charge. 



Aug. 13. 
Sept. 27. 



Feet. 
0.48 
.45 



Sec.-ft. 
0.14 



Nov. 21. 
Dec. 27. 



Feet. 
0.60 
.73 



Sea^ft. 
0.46 
1.47 



Note. — This stream is tributary to Wailuku River. 

Bed of stream of sand, gravel, and small cobbles; is fairly smooth and probably only slightly shifting. 
One channel at all stages. 

Daily gage height, in feet, at station No. 9 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.42 




0.62' 

.60 


0.78 




2. 
















0.60 


3 


0.58 
.55 

.52 

.54 
.55 
.58 
.55 
.52 

.51 
.51 
.50 
.50 

.48 

.46 


"o.'ii" 

.41 


0.57 
.55 
.52 


0.55 
,59 
.61 

.61 






0.65 
.60 
.58 

.58 

"".'51' 
.50 
.54 






.71 


4 


0.73 
.50 


+6." 65' 
+'."io' 


.63 
.48 

""."49' 
.44 
.50 
.50 


""6." 76" 

.64 
.70 
.62 
.60 

' .54 
.62 
.58 
.56 
.55 

.58 


.46 
.44 

.45 

"".'45" 

""".'5l' 

.49 
.61 
.50 
.52 






5 


.68 

""'."55' 
.56 
.55 

"""."72" 
.68 
.60 


.62 


6 


.59 


7... 


""."46" 
.40 
.38 

.38 
.35 
.50 
.42 
.40 

.39 
.36 
.31 
.53 

.88 


.52 


.60 


8... 






.70 


9 


.55 
.55 

.56 
.61 
.79 
.90 
.80 

.70 
.97 

""."89" 

.82 
.72 
.81 








.61 


10 


.69 

.67 
.62 

""."58" 

.64 

.54 

"""."56' 
.59 
.59 

.69 
.65 
.59 






.58 


11 






.54 


12 








.44 
.49 


.52 


13 


.45 


.30 


.54 


.52 


14 


.54 


15 




.23 


.54 


.52 
.48 


.56 


16 




.65 


.58 


17 


.40 


.40. 




.45 


18 






.48 


.55 

.54 
.52 

.51 
.50 

.48 
.48 

.45 
.45 
.45 
.44 
.69 


.54 
.59 

"""72" 
,65 

.59 


.71 
""69" 

.61 

.58 
.60 


.40 


19 


.42 
.41 

.40 
.40 
.40 
.40 


.38 






.42 


20 










21 




.38 


.45 


""."44' 
.48 
.45 
.42 

.41 
.52 


.60) 


22 




23 


.30 




.45 
.58 

.42 
.35 
.22 
.20 




24 




25 




.70 

.57 
.49 
.46 
.45 
.52 


.60 

.67 
.63 
.62 


.23 
""."26" 


.52 

.50 
.54 
.49 


.58 

.58 
.54 


.68 


26 








27 


.41 

.40 
.40 
.39 




72 


28 


.61 


29 






.61 


30 








'"."68" 


.58 




31 




.10 

































236 



WATER RESOURCES OP HAWAII, 1912. 



Daily discharge, in second-feet, *at station No. 9 at 2,700-foot level, near Hilo, Hawaii, for 

1911. 



Day. 



1 
2 
3 
4 
5 

6 

7 
8 
9 
10 



Oct. 


Nov. 


Dec. 


3.60 


0.15 


0.32 


3.08 


,15 


.18 


2.56 


.15 


.15 


2.06 


.32 


.18 


1.58 


.50 


.29 


1.04 


.56 


.18 


.98 


.62 


.15 


.86 


.68 


.18 


.74 


.74 


.36 


.62 


.56 


.29 



Date. 



11 
12 
13 

14 
15 

16 
17 

IS 
19 
20 



Oct. 



0.62 
.62 
.56 
.56 
.56 

.50 
.50 
.50 
.43 
.39 



Nov. 



Dec. 



0.32 

.29 

.80 

1.10 

2.56 

3.86 
4.38 
3.34 
2.30 
1.34 



Day. 



21 

22 
23 
24 
25 

26 

27 
28 
29 
30 
31 



Oct. 



0.36 
.32 
.29 
.29 
.26 

.18 
.18 
.15 
.15 
.15 
.15 



Nov. 



1.10 
1.34 
1.46 
1.58 
1.70 



.56 
.56 
.50 
.43 



Dec. 



0.56 



.32 
2.56 

1.70 
.43 
.36 
.74 
.62 
.50 



Daily discharge, in second-feet, at station No. 9 at 

1912. 



,1 00-foot level, near Hilo, Hawaii, for 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1. 
2. 
3. 
4. 
J5. 

6. 

7. 

8. 

9. 

10. 

11. 

12. 
13. 
14. 
15 

16, 

17. 
18 
19 
20 

21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



0.40 
.40 
.45 
.30 
.20 

.30 
.30 
.45 
.30 

.20 

.20 
.20 
.15 
.15 
.15 

.10 
.10 
.05 
.05 
.05 

.05 
.05 
.05 

.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 



0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.15 
.05 
.05 

.05 
.05 
.05 
.25 
3.30 

3.50 

4.00 
5.00 
4.50 
4.00 

3.00 

2.00 

1.00 

.80 



0.50 
.50 
.40 
.30 
.20 

.20 
.20 
.30 
.30 

.30 

.35 

.55 

2.20 

3.60 

2.30 

1.10 
4.50 
4.10 
3.80 
3.45 

2.55 
1.35 
2.45 
1.80 
1.10 

.40 
.15 
.10 
.10 
.20 
3.00 



1.00 
.50 
.30 
.45 

.55 

.55 
.50 
.40 
.20 
1.05 

.90 
.60 
.50 
.45 
.75 

.30 
.30 
.35 
.45 
.45 

1.05 
.80 
.45 
.50 
.50 

.90 
.70 
.60 
.50 
.60 



0.70 
.80 
1.00 
1.45 
2.00 

.15 
.15 
.15 
.15 
.15 

.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 



0.05 



.05 



.20 

.15 
.30 
.15 



0.10 
.20 
.80 
.50 
.45 

.45 
.30 
.20 
.15 
.30 

.30 
.30 
.30 
.30 
.30 

.20 
.20 
.20 
.20 
.20 

.15 
.15 
.15 
.45 
.30 

.05 
.05 
.05 
.05 
.05 
.05 



0.05 
.10 

1.00 
.70 
.15 

.15 
.15 
.10 
.15 
.15 

.10 
.10 
.15 
.20 
.20 

.15 
.15 
.15 
.15 
.10 

.10 
.10 
.15 
.10 
.10 

.05 
.20 
.15 
.10 
.10 
.20 



1.80 
2.00 
2.50 
3.00 
1.10 

.75 
1.10 
.60 
.50 
.40 

.30 
.60 
.45 
.35 
.30 

.45 
.40 
.30 
.30 
.20 

.20 
.15 
.15 
.15 
.10 

.10 
.10 
.10 
.10 
1.05 



0.60 
.50 
.30 
.10 
.10 

.10 
.10 
.10 
.20 
.20 

.15 
.55 
.15 
.20 
.20 

.10 
.40 
.30 
.45 
.50 

.50 
1.00 
3.80 
1.35 



.45 
5.00 
3.00 
3.00 
2.00 
1.00 



2.05 
2.50 
3.00 
2.00 
1.00 

.60 
.30 
.35 
.30 
3.00 

2.50 

1.35 

1.00 

.50 

.60 

.80 
1.00 
1.30 
1.20 
1.05 

.55 
.45 
.50 
.50 
.45 

.45 
.30 
.60 
.50 
.45 



1.50 
2 50 

.50 
1.30 

.60 

.45 
.50 
1.10 
.55 
.45 



.20 
.20 
.30 
.30 

.45 
.10 
.05 
.05 
1.00 

.50 
1.50 
3.00 
2.00 
1.00 

2.00 
1.35 
.55 
.55 
.40 
.30 



Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 9 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.80 
.71 
1.01 



.16 

1.12 

1.37 

.57 

.26 



Run-off 

(total in 

acre-feet). 



49.50 
42.40 
62.30 



9.84 
64.40 
84.20 
33.90 
16.00 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



0.05 
.24 
.18 
.65 

.85 
1.04 
.82 



2.98 
14.80 
11.10 
38.70 
52.30 
61.90 
50.40 



441. 00 



ISLAND OF HAWAII. 237 

Discharge measurements at station No. 10 at 2,700-foot level, near Hilo, Hawaii, in 1912, 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Aug. 13 

Sept. 27 


E. 0. Christiansen. 
do 


Feet. 
0.73 

.70 


Sec.-ft. 


Nov. 21 
Dec. 27 


E. 0. Christiansen. 
do 


Feet. 
0.98 
1.01 


Sec.-ft. 
17 




59 







Note.— Bed of stream of gravel and small cobbles, shifting. One channel at all stages. 
This stream is tributary to Wailuku River. 

Daily gage height, in feet, at station No. 10 at 2, 700 foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.80 




0.82 
.80 


0.98 




2 


















3 


0.86 

(a) 

(a) 

.88 
.89 
.91 
.90 
.86 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 


"(a)"' 
(a) 


(«) 

(a) 
(a) 


0.75 

.82 
.85 

.90 






0.88 
.81 
.80 

.80 

""."so! 

.80 

.80 








0.98 


4 


1.09 

.85 


"(«)" 

"(«)"' 


.89 
.80 

"""."86" 

.81 

.85 
.82 


"i."66" 

.96 
1.00 
.90 
.89 

.85 
.88 
.81 
.82 
.80 

.80 


.75 

.72 

.71 

""In 

""to" 

.70 

.85 
.72 
.74 


""."95" 

""."82" 

.84 
.99 

"i."62" 

.92 

.85 


1.01 


5 


.91 


6 


.89 


7 






.88 


8 


(a) 
(a) 
(a) 

fa) 

(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
0.92 








.98 


9 










.92 


10 


""6." 85' 
.91 
.82 

.75 
1.09 

"i.'io' 

.97 
(a) 
.86 


.99 

.93 

.89 

""."so" 

.86 
.74 

""si" 

.88 
.82 

1.04 
.90 

.85 






.88 


11 






.82 


12 








.72 
.72 


.78 


13..... 


.78 


0.61 


.80 


.74 


14 


.75 


15 




.60 


.80 


.70 
.70 


.81 


16 




.90 


.85 


17 . 


.70 


(o) 




.72 


18 






.81 


.79 
.76 

.75 

.80 
.80 
.78 
.75 

.71 
.69 
.69 
.68 
.90 


.87 
.82 

""."99" 

.94 

.88 


.90 

""."95" 

.94 
.89 
.90 


.72 


19 


(a) 
(a) 

(a) 
(a) 
(a) 
(a) 


.66 






.75 


20 










21 




(a) 


.80 


""."TO" 

.70 

.75 
.71 

.71 

.84 


.88 


22 




23 


(«) 




.80 

.82 

.80 
.80 
.80 
.80 




24 




25 




.80 

(a) 
(a) 
(a) 

(a) 
.92 


.91 

.91 

.88 
.82 




(a) 

(a) 
(a) 
(a) 


.95 

.85 

.74 


.95 


26 








27 


(a) 
(a) 

(a) 
(a) 




1.00 
.90 


29 






.88 










""9i' 


.94 




31 




(a) 

































a Channel dry. 

Daily discharge, in second-feet, at station No. 10 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


1 


0.72 
.60 
.48 
.36 
.30 

.24 
.24 
.22 
.20 
.20 


(a) 

(°) 
(a) 
(a) 
(a) 

(a) 

(a) 
(a) 


(a) 

(a) 

(a) 

0.05 

(a) 

(a) 

(a) 
.05 
.05 
.05 


2 


3 


4 


5 


6..... 


7 


8 


9 


10 





Day. 



11 
12 
13 
14 
15 

16 
17 
18 
19 
20 



Oct. 


Nov 


Dec. 


0.12 


(a) 


0.05 


.11 


(a) 


.05 


.10 


(a) 


.24 


.05 


.05 


.28 


.05 


.05 


.88 


.05 


.05 


1.95 


.05 


.05 


1.60 


8 


.10 


1.60 


.11 


.44 


(a) 


.14 


.12 



Day. 



21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



Oct. 



Nov. 



0.17 
.20 
.28 
.32 
.36 

.20 
.14 
.12 
.05 
.05 



Dec. 



0.05 
.05 
.05 

(«) 
.44 

.17 
.05 
.05 
.36 
.32 
.30 



a Channel dry. 



238 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 10 at 2,700-foot level, near Hilo, Hawaii, for 

1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.15 
.15 
.15 

(a) 
(a) 

.15 

.20 
.20 
.20 
.15 

(<0 

(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 

(a) 
(a) 

(a) 
(a) 
(a) 
( a ) 
(») 

(a) 
(a) 
(a) 

(a) 
(a) 
(a) 


(a) 

(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 

$ 

0.20 

1.00 
2.00 
2.20 
2.00 
1.00 

.50 
.30 
.10 
.10 


0.10 
.10 
(«*) 
(«0 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 

(a) 
.10 
.20 
.10 

.10 

.75 
.80 
.80 
.80 

.35 
(a) 
.15 
.10 
.05 

(a) 

(a) 
(a) 
(a) 
.20 
1.50 


0.50 
.30 
.10 
.10 
.10 

.20 
.80 
.60 
.40 
.40 

.25 
.20 
.10 
.05 
.15 

.10 
.10 
.05 
.15 
.10 

.55 
.20 
.10 
.15 
.20 

.20 
.15 
.10 
.10 
.10 








0.05 


0.40 
.50 
1.00 
1.50 
.40 

.30 
.40 
.20 
.20 

.10 
.15 
.05 
.10 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.20 


0.10 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.10 
.10 
.10 
.10 

.10 
.40 
.15 
.10 
.30 

.30 
.30 
2.00 
.40 
.30 

.15 
2.00 
1.80 
1.50 
.60 
.20 


0.35 

.40 
.60 
.50 
.30 

.20 
.10 
.10 
.40 
1.40 

.50 
.50 
.25 
.10 
.20 

.20 
.20 
.20 
.20 
.30 

.30 
.20 
.20 
.20 
.30 

.10 
.10 
.10 
.20 
.35 


0.40 


2 








.60 


3 






0.15 
.05 
.05 

.05 


"".'26' 
.05 

""."is" 

.05 
.10 
.10 


.35 


4 


0.75 




.45 


5. 


20 


6 


.10 




.20 


7 


.15 


8 






.05 
.05 
.05 


.35 


9 






.25 


10 






.15 


11 






.10 


12 










.10 


13 






.05 




.10 


14 






.05 


15 






.05 




.05 


16 






.10 


17 










.10 


18 








.05 


.10 


19 








.10 


20 










.20 


21 






.05 




.15 


22 






.60 


23 






.05 
.10 




.90 


24 






.50 


25 






.30 


26 






.05 
.05 
.05 
.05 


""."io" 


.50 


27 






.40 


28 






.20 


29 






.15 


30 






.10 


31 










.10 



















a Channel dry. 

Note. — Daily discharge determined from poorly denned rating curve. Discharge for days for which gage 
heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp near 
station No. 50. 

Monthly discharge at station No. 10 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.13 
.08 
.30 



.04 
.32 
.20 
.22 
.10 



Run-off 

(total in 

acre-feet). 



8.10 
4.83 
18.00 



2.46 
18.40 
12.30 
13.10 
.6.15 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.00 
.05 
.07 
.21 
.38 
.30 



Run-off 

(total in 

acre-feet). 



0.00 
3.07 
4.30 
12.50 
23.40 
17.90 
16.00 



130. 00 



ISLAND OF HAWAII. 



239 



Discharge measurements at station No. 11 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrograp her.] 



Date. 



Gage 
height. 



Dis- 
charge. 



Aug. 13. 
Sept. 27. 
Nov. 21 . 
Dec. 27.. 



Feet. 



0.36 
.54 



Sec.-ft. 

00 

(a) 
0.04 
1.15 



a Channel dry. 

Note.— Composed of silt, sand, and gravel, is shifting. One channel at all stages. This stream is 
tributary to Wailuku River. 

Daily gage height, in feet, at station No. 11 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsorf, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















00 




0.40 
.22 


0.50 




2 


















3 


0.36 


"(a)" 

(a) 


0.22 

00 

00 


0.30 
.31 
.32 

.34 






0.39 

.28 
.19 

.08 

"(a)" 
00 

00 








0.44 


4 


0.72 
.65 


"OO" 

■■(a)" 


0.39 

00 

"".'28' 

.19 
.39 
.35 

00 

00 
00 

00 

00 


' '6*59" 

.50 
.59 
.42 
.38 

.30 
.37 
.30 
.35 

00 
00 


00 
00 

00 

'"(«)■• 

"(a)"" 

00 
00 
00 
00 


""."56" 

""."28" 
.31 
.61 

'"."59" 
.60 
.30 


.52 


5 




.40 


6 


.36 
.36 
.40 
.40. 
.35 

(a) 

(a) 
(a) 
(a) 
(a) 

(a) 


.30 


7 


(a) 
(a) 

00 

(a) 
(a) 
(a) 
(a) 

(a) 

00 
00 
00 

0.51 


00 


.35 


8 






.50 


9 


0.31 
.31 

(a) 
0.29 
.39 
.45 
.31 

.30 
.71 

"".'29' 
.31 

00 

.38 








.40 


10 


.59 

.50 
.39 

'"."34" 
.40 

.29 

"*.'32" 
.40 
.37 

.45 
.44 
.40 






.30 


11 






.21 


12 








.21 


13 


.14 


0.15 


.29 


.18 


14.. 


.20 


15 




(0) 


00 


.25 


16 




.60 


00 


17 


(a) 


(a) 




00 


18 






.34 


.00 

00 

(a) 

00 

00 

00 
00 

00 
00 

(a) 
(a) 
.49 


.31 

.28 

""."59' 

.42 
.40 


.50 

"\"45* 

.38 
.31 
.40 


00 

.21 


19 


(a) 
(a) 

(a) 

(a) 
(a) 

(a) 


.03 






20 










21 




00 


00 


"la)" 

00 
00 

(a) 

00 

.15 


.35 


22 




23 


(a) 




00 

.30 

00 

00 

00 

00 




24 




25 




.30 

.24 
.21 
00 

00 

.36 


.43 

.46 
.45 
.41 


00 
"{a)" 


00 

(a) 
00 

00 


.30 

.26 
.25 


.48 


26 








27 


(a) 
(a) 

(a) 
(a) 




.53 


28 


.40 


29 






.39 


30 








'".'35' 


.40 








00 

































a Channel dry. 

Daily discharge, in second-feet, at station No. 11 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


0.55 
.65 
.75 
.85 

1.00 

1.10 
1.00 

.85 
.75 
.65 


00 

00 

0.01 

.02 

.05 

.05 
.10 
.10 
.15 
.05 


0.05 

00 

00 

00 

.15 

00 

{a) 

.15 
.30 
.20 


11.. 


0.30 

.30 
.25 
.20 
.15 

.10 
.10 
.10 
.05 
.05 


0.10 
.20 
.35 
.55 

1.00 

.75 

.85 

1.00 

1.10 

1.20 


0.30 

.30 

.75 

1.40 

2.30 

.20 
1.20 
1.40 
1.60 

.55 


21.. . 


0.05 

.05 
.05 
.03 
.02 

00 
OO 

(a) 
(a) 

00 

00 


1.30 
1.40 
1.50 
1.60 
1.60 

.55 
.45 
.45 
.35 
.15 


0.55 


2 


12.. 


22.. 


.30 


3 


13. 


23 . 


.20 


4. 


14.. 


24. 


OO 
1.10 


5 


15.. 


25 . 


6 


16 


26 


.45 


7 


17 


27.. .. 


.30 


8 


18 


28.. 


.30 


9 


19.. 


29 


.55 


10 


20 


30 


.45 






31 


.30 









a Channel dry. 



240 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 11 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 



1 
2 
3 
4 
5 

6 

7 

8 
9 
10 

11 
12 
13 
14 
15 

16 
17 
18 
19 
20 

21 
22 
23 
24 

25 

26 

27 
28 
29 
30 
31 



Jan. 



0.1 

1 
1 



Feb. 



Mar. 



0.5 
.5 
.1 

(a) 
(a) 

(a) 

(a) 

(a) 
.1 
.1 

(a) 
.1 
.2 
.5 
.1 

.1 

3.8 

4.0 

4.0 

.5 

.5 
(a) 
.2 
.1 
.1 

.1 
.1 

(a) 

(a) 

.1 
2.0 



Apr. 



0.5 
.2 
.1 
.1 
.1 

.1 
3.0 
2.5 
2.5 
1.9 



.2 
.2 
.1 

.2 

.1 

1.0 
.1 
.2 
.1 

.5 
.4 

.2 
.5 

.4 



May. 



0.8 
1.2 
1.0 
4.0 
5.0 



.5 
.1 
.1 
.1 

(a) 
(a) 
(a) 
(a) 
(a) 

(o) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

fa) 

(a) 
(a) 
(a) 
(a) 
(a) 



June. 



(a) 
(a) 
(a) 

(°) 

(a) 

(a) 
(a) 
(a) 
(a) 



(a) 

(«) 

(a) 



(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 

(a) 
(a) 
(a) 
(a) 



July. 



0.1 
.1 
.2 
.1 
.1 

(a) 
(a) 

$ 

(a) 

.5 
(a) 
.1 
.2 

(a) 

(a) 
.2 
.1 
.1 
.1 

(o) 
.1 

(a) 
.2 
.1 

(a) 

(a) 

(a) 

(a) 
.1 
.1 



Aug. 



(a) 
(a) 
1.0 
.2 
(«) 

(a) 
.1 
.1 
.2 
.1 

(a) 

(a) 
(a) 

00 

(«) 

.1 

.2 

(a) 

(a) 
(a) 
(a) 

(o) 
(a) 

(a) 



Sept. 



Oct. 



0.2 
.1 
.1 
(a) 

(«) 

(a) 
(a) 

(«). 
(a) 

(•) 

(a) 
(a) 
(a) 
(a) 



4.0 

1.9 

.3 

.2 
6.0 
2.0 
2.0 
1.0 

.1 



Nov. 



0.8 

.2 

2.0 



.1 

.1 

.1 

2.2 

5.0 

4.0 

1.9 

2.0 

.4 

.1 

2.0 

3.0 
.8 

1.5 
.5 

.2 
.2 
.2 
.2 
.1 

.1 
.1 
1.0 
.6 
.2 



Dec. 



1.0 
2.0 

.4 
1.0 

.2 

.2 
.1 
.8 
.2 
.2 



(a) 
(a) 
(a) 



2 
.1 

.1 
1.0 

4.0 
1.5 

.7 



a Channel dry. 

Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 11 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December 

1912 

January 

February 

March 

April 

May _ 



Mean 
discharge 
in second- 
feet. 



0.32 
.57 
.50 



.03 
.50 
.57 
.61 
.50 



Run-off 

(total in 

acre-feet). 



19.80 
13.90 
30.50 



1.84 
28.80 
35.00 
36.30 
30.70 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.00 



.37 

.67 

1.04 

.57 



42 



Run-off 
(total in 
acre-feet), 



0.00 
4.92 
4.92 
22.00 
41.20 
61.90 
35.00 



303. 00 



ISLAND OF HAWAII. 



241 



Discharge measurements at station No. 12 at 2,700-foot level, near Kilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 




Feet. 
0.89 

.84 


Sec.-ft. 
1.58 

.78 


Nov. 27.. 
Dec. 27.. 




Feet. 
■ 1.14 
1.53 


Sec.-ft. 
4 99 


Sept 27 




23.3 









This stream is tributary to "Wailuku River. 

Note. — Bed of stream of gravel and small cobbles, is fairly smooth and regular, and probably perma- 
nent. One channel at all stages. 

Daily gage height, in feet, at station No. 12 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.82 




1.35 
1.22 


1.50 




2 


















3 


1.02 

1.01 

.98 

1.02 
1.02 
1.05 
1.00 
.98 

.95 
.92 
.90 
.89 

.85 

.82 


"6." 65' 
.65 


1.05 
1.01 
.98 


1.16 
1.22 
1.29 

1.31 






1.39 
1.24 
1.20 

1.12 

"i.'os" 

1.05 
1.00 








1.40 


4 


1.55 
1.39 


"6.'40" 
""*."36" 


1.33 

"""."94" 
.91 
1.02 
1.02 


"i.*55" 

1.42 
1.52 
1.32 
1.26 

1.19 
1.31 
1.19 
1.04 
.99 

1.11 


1.09 
.96 

.72 

'".*82" 

""."87" 

.90 

1.16 

.98 

.95 


"i."44" 

"i.'rg" 

1.21 
1.38 

"i."5i" 

1.32 
1.22 


1.54 


5 


1.32 


6 


1.28 


7 


"".'62" 
.62 
.61 

.61 
.60 
.80 
.76 
.70 

.69 
.68 
.65 
.71 
1.29 


.95 


1.28 


8 






1.44 


9 


.96 

.98 

.98 
1.34 
1.48 
1.49 
1.33 

1.02 
1.21 

"i."24" 

1.19 
1.08 
1.08 








1.26 


10 


1.59 

1.49 
1.32 

"i."i9" 

1.20 
1.16 

"i.'ri" 

1.19 
1.16 

L39 
1.22 






1.20 


11 






1.14 


12 








.84 

.89 


1.10 


13 


1.01 


.71 


1.14 


1.05 


14 


1.06 


15 




.67 


1.04 


1.05 
.91 


1.21 


16 




1.39 


1.24 


17 


.90 


.91 




1.05 


18 






.92 


1.05 
1.02 
1.00 

1.02 

1.09 

.95 

.89 

.85 
.84 
.82 
.82 
1.41 


1.07 
1.14 

"if 62" 
1.34 

1.25 


1.46 

"L'44" 

1.28 
1.28 
1.32 


1.01 


19 


.80 
.79 

.76 
.75 
.74 

.72 


.93 






1.12 


20 










21 




.80 


.85 


"".'81' 
.81 

.81 
.80 

.79 
1.00 


1.21 


22 




23 


.79 




.75 
1.09 

1.08 
.92 
.90 

.88 




24 




25 




1.04 

1.05 

1.01 

.99 

.94 

1.02 


1.32 

1.34 
1.32 
1.30 


.70 
"'.*65' 


1.24 

1.00 

1.08 

.99 


1.25 

1.14 
1.12 


1.45 


26 








27 


.75 
.72 
.71 
.70 




1.52 


28 


1.35 


29 






1.28 


30. 








"i."32" 


1.24 









































Daily discharge, in second-feet, at station No. 12 at 2,700-foot level, near Hilo, Hawaii, for 

1911. 



Day. 


Oct. 


Nov. 


Deo. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


53.0 
44.1 
36.0 
28.0 
21.0 

15.0 
14.0 
12.5 
11.0 
10.0 


1.1 
1.1 
1.1 
2.0 
4.2 

5.6 
7.3 
9.3 
12.0 
10.0 


3.4 
2.5 
2.3 
2.5 

2.8 

2.0 
1.7 
1.9 
2.3 
1.7 


11 '.. 


7.3 
6.6 
6.4 
5.3 
5.9 

5.6 
5.4 
4.2 
3.9 
3.4 


11.0 
12.0 
13.0 
14.5 
16.2 

14.0 
15.0 
16.2 
17.4 
18.6 


2.3 

2.0 

11.0 

15.6 

36.0 

97.0 

127.0 
133.0 
137.0 
93.0 


21.. 


2.8 
2.5 
2.3 
2.1 
1.9 

1.6 
1.5 
1.3 
1.2 
1.1 
1.1 


19.8 
21.7 
23.8 
25.9 
28.8 

14.0 
7.3 

8.0 
5.4 
4.0 


37.8 


2 


12 


22 


18.0 


3 


13 * 


23 


12.5 


4 


14 


24 


10.0 


5 


15 


25 


40.5 


6 


16 


26 


22.4 


7 


17 


27 


18.0 


8 


18 


28 


17.4 


9 


19 


29 


37.8 


10 


20 


30 


36.9 






31 


36.0 









14694°— wsp 336—14 16 



242 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 12 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1 

2 
3 
4 
5 

6 

7, 
8, 
9. 
10 

11. 

12. 
13. 
14. 
15. 

16. 
17. 
18. 
19. 
20. 

21. 

22. 
23. 
24. 
25. 

26. 
27. 
28. 
29. 
30. 
31. 



2.80 
2.80 
2.80 
2.70 
2.30 

2.80 
2.80 
3.40 
2.50 
2.30 

2.00 
1.70 
1.50 
1.40 
1.10 

.90 
.80 
.80 
.70 
.70 

.50 
.50 
.50 
.40 
.40 

.50 
.50 
.40 
.30 
.30 
.30 



0.20 
.20 
.20 
.20 
.20 

.20 
.10 
.10 
.10 
.10 

.10 
.10 
.70 
.50 
.30 

.30 
.30 
.20 
.30 
9.70 

20.00 
30.00 
36.00 
28.00 
20.00 

10.00 
6.00 
4.00 
4.00 



3.80 
3.60 
3.40 
2.70 
2.30 

2.20 
2.00 
2.00 
2.10 
2.30 

2.30 
12.00 
19.80 
20.40 
11.50 

2.80 
6.90 
7.20 
7.70 
8.00 

6.40 
3.90 
3.90 
3.50 
3.20 

3.40 
2.70 
2.40 
1.90 
2.80 
15.00 



9.00 
6.00 
5.60 
7.30 
9.70 

10.50 
34.00 
33.00 
32.00 
27.30 

20.40 
11.00 
9.00 
6.40 
6.60 

5.60 
5.80 
5.90 
6.40 
5.60 

14.50 
14.50 
7.30 
9.00 
11.00 

12.00 

■11. 00 

10.00 

6.00 

7.00 



16.00 
17.00 
15.00 
24.50 
30.00 

14.50 
10.00 
5.00 
3.00 
3.00 

3.00 
3.00 
2.70 
2.40 
2.10 

1.80 
1.50 
1.60 
1.80 
1.50 

1.30 
1.00 
.70 
.70 
.70 

.50 
.20 
.20 
.20 
.10 
.10 



0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.20 
.30 
.30 
.20 

.90 
1.60 
1.40 
1.10 

.90 

.70 
2.00 
4.00 
6.00 
8.00 

2.50 
3.90 
2.40 
2.00 
2.00 



2.00 
3.00 
14.50 
8.00 
6.60 

4.70 
4.30 
3.90 
3.40 
2.50 

20.00 
15.00 
5.20 
4 20 
3.20 

2.80 
2.40 
2.00 
1.70 
1.40 

1.10 

.80 

.50 

4.00 

4.00 

3.90 
1.70 
1.50 
1.30 
1.00 
1.00 



0.90 

1.00 

18.00 

11.50 

5.00 

3.00 
1.90 
1.60 
2.80 
2.80 

1.90 
1.00 
1.40 
2.40 
3.40 

1.60 
1.60 
1.70 
2.00 
1.50 

1.10 



.70 

.70 
2.50 
2.00 
1.50 
1.00 
2.00 



18.00 
20.00 
26.00 
32.00 
24.50 

16.20 
22.40 
11.00 
8.60 
7.50 



10.50 
6.40 
3.20 
2.40 

4.40 
3.80 
3.40 
2.80 
2.50 

2.-80 
4.00 
2.00 
1.40 
1.30 

1.10 
1.00 
.90 
.90 
15.60 



12.50 
7.30 
6.00 
4.00 
2.10 



.60 

.90 

1.10 

1.30 

1.50 
5.60 
2.30 
2.00 
2.00 

1.50 
10.00 
3.70 
5.20 
5.00 

5,00 
25.00 
35.00 
29.60 
12.00 

8.30 
35.00 
30.00 
25.00 
18.00 
12.00 



21.00 
23.00 
25.00 
20.00 
17.40 

12.00 

6.40 

6.90 

14.00 

34.00 

30.00 
28.00 
11.00 
7.30 
7.00 

14.50 
22.00 
18.60 
19.00 
17.40 

9.30 
9.30 
11.00 
9.60 
8.30 

5.20 
4.70 
12.00 
10.00 
8.00 



12.00 
30.00 
15.00 
23. 80 
11.00 

9.30 
9.30 

17.40 
8.60 



5.20 
4.20 
3.40 
3.50 
6.90 

8.00 
3.40 
2.70 
4.70 
10.00 

6.90 

18.00 
34.00 
25.00 
18.00 

20.00 
22.40 
12.50 
9.30 
6.00 
5.00 



Note. — Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 12 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December 

1912, 

January 

February 

March 

April 

May ^ 



Mean 
discharge 
in second- 
feet. 



10.30 
12.00 
31.10 



1.40 
5.93 
5.62 
12.00 
5.33 



Run-off 

(total in 

acre-feet). 



633. 00 

718. 00 

1,920.00 



86.10 
341. 00 
346. 00 
714.00 
328. 00 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



1.38 
4.25 
2.61 
8.77 
10.00 
14.70 
12.00 



Run-off 

(total in 

acre-feet). 



82.10 
261.00 
160.00 
522.00 
615.00 
875.00 
738. 00 



5,070.00 



Note. — One channel; bed sand and silt; shifting. This stream is tributary to Wailuku River. 



The following discharge measurement was made at station No. 12A by E. O. 
Christiansen: 

December 27, 1912: Gage height, 0.48 foot; discharge, 0. 



ISLAND OF HAW An. 



243 



Daily gage height, in feet, at station No. 12 A at 2,700-foot level, near Hilo, Hawaii, for 

1912. 

[A. Fataeff, observer.] -. 



Day. 


Dec. 


Day. 


Dec. 


Day. 


Dec. 


1 




11 


0.40 
.39 
.39 
.40 
.42 

.44 
.38 
.38 
.40 


21 


0.42 


2 




12 


22 




3 


0.52 
.45 
.42 

.41 
.42 
.46 
.42 
.40 


13 


23 , 




4 


14 


24 




5 


15 


25 


.45 


6 


16 


26 




7 


17 


27 

28.. 


.46 


8 


18 


.42 


9 


19 


29 

30 


.42 


10 


20 










31 











Discharge measurements at station No. 13 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage, 
height. 


Dis- 
charge. 


Aug. 13 


Feet. 
0.70 

.52 


Sec.-ft. 
2.03 
.69 


Nov. 27 


Feet. 
0.90 
1.39 


Sec.-ft. 
5.36 


Sept. 27 


Dec. 27 


21.2 









Note. — One channel; bed sand and silt; shifting. This stream is tributary to Wailuku River. 

Daily gage height, in feet, at station No. 13 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, BelayefT, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.52 




1.12 
1.04 


1.38 




2 


















3 . 


0.74 
.72 
.71 

.72 
.75 
. .78 
.75 
.72 

.70 
.68 
.65 
.62 
.55 

.52 




0.90 
.86 
.80 


1.15 
1.20 

1.27 

1.27 






1.34 
1.12 
1.05 

.99 

"""."89" 

.84 
.82 








1.32 


4 . 


1.45 

1.29 


"0. 40* 
"""."39" 


1.14 

.79 

""."69" 
.68 
.70 
.67 


"i.*48' 

1.34 
1.34 
1.18 
1.03 

.93 

1.08 

.96 

.82 
.76 

.82 


.84 
.70 

.68 

*"*.*64' 

*"."<39' 

.70 

.97 
.81 

.82 


"*L36" 

""."99" 

.96 

1.31 

"Tii" 
-1.26 
1.04 


1.38 


5 


1.12 


6 


1.06 


7 


""o.'io* 

.10 

.11 

.11 
.11 

.40 
.33 
.32 

.31 
.29 
.26 
.41 
1.08 


.72 


1.08 


8 






1.28 


9 


.81 
.86 

.89 
1.28 
1.44 
1.51 
1.35 

1.09 
1.22 

"i.'29" 

1.23 
.92 
.94 








1.09 


10.. 


1.56 

1.41 
1.29 

'T26' 
1.22 

1.08 

"i.'io" 

1.12 
1.10 

1.34 
1.27 
1.14 






.99 


11 j 






.92 


12 








.62 
.69 


.88 


13 


.89 


.58 


1.09 


.84 


14.. 


.85 


15 




.50 


.86 


.91 
.79 


.93 


16 




1.35 


.98 


17 


.75 


.65 




.87 


18 






.90 


.80 

.79 
.78 

.80 
.76 
.79 
.64 

.55 
.54 
.52 
.48 
1.32 


1.01 

1.09 

'"i."58* 
1.15 

1.05 


1.30 

"i."35* 

1.12 
1.04 
1.12 


.82 


19 


.48 
.44 

.32 
.30 
.30 
.30 


.71 






.95 


20 










21 




.60 


.41 


"""."58" 
.55 
.55 
.50 

.47 
.84 


1.02 


22 




23 


.68 








24 .. 




.71 

.52 

.57 

1.02 

1.15 




25 




.92 

.86 
.81 
.76 

.72 
.80 


1.22 

1.31 
1.25 
1.22 


• .60 

"""."58" 


.79 

.71 

.82 
.74 


.80 

.94 
.90 


1.26 


26 






27 


.31 
.30 
.30 
.29 




1.36 


28 


1.11 


29 






1.09 


30 








"'i.'ii' 


1.21 




31 




.49 

































244 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 13 at 2,700-foot level, near Silo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


57.5 
45.0 
38.0 
32.0 
27.0 

15.4 
13.8 
12.4 
11.2 
10.0 


1.02 

.95 

.88 

2.30 

5.50 

7.10 
9.00 
11.20 
13.80 
11.50 


5.50 
2.90 
2.54 
2.90 
3.26 

2.30 
1.80 
2.10 
2.42 
2.30 


11 


8.75 
8.50 
8.25 
8.00 
7.75 

7.50 

7.50 
5.50 
4.90 
4.30 


12.40 
13.00 
14.20 
15.00 
16.20 

10.60 
11.50 
13.00 
15.00 
17.00 


2.54 
2.42 
10.60 
85.00 
122. 00 

85.00 
108. 00 
102. 00 
109.00 

71.00 


21 


3.70 
3.26 
2.90 
2.54 
2.30 

2.10 
1.70 
1.30 
1.02 
.74 
1.02 


19.50 
22.00 
24.50 
27.00 
28.00 

16.60 
12.40 
11.80 
10.30 
9.50 


33.20 


2.. 


12 


22 


27.50 


3.. 


13 


23 


19.50 


4 


14 


24 


10.60 


5 


15 


25 


49.00 


6 


16 


26 ; 


32.00 


7 


17 


27 


24.50 


8.. 


18 


28 


22.50 


9.. 


19 


29 


36.80 


10.. 


20 


30 


32.00 






31 


32.00 









Daily discharge, in second-feet, at station No. 13 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


2.50 
2.50 
2.80 
2.50 
2.40 

2.50 
2.90 
3.30 
2.90 
2.50 

2.30 
2.10 
1.80 
1.50 
1.00 

.70 
.60 

.eo 

.50 
.30 

.10 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.10 
.05 
.05 

.05 
.05 
.05 
.10 
9.50 

15.00 
22.00 
29.00 
35.00 
15.00 

5.00 
3.00 
5.00 
7.00 


4.00 
6.00 
5.50 
4.70 
3.50 

2.00 
2.50 
3.00 
3.70 
4.70 

5.30 
16.20 
24.00 
27.50 
19.50 

9.80 

13.80 
20.00 
18.00 
16.60 

14.20 
5.90 
6.30 
5.00 
5.90 

4.70 
3.70 
3.00 
2.50 
3.50 
25.00 


16.00 
13.00 
11.50 
13.00 
15.80 

15.80 
24.00 
35.00 
32.00 
30.00 

22.50 
16.60 
17.00 
13.00 
13.80 

9.50 
15.00 
10.00 
10.60 
10.00 

19.00 
15.80 
11.20 
10.00 
13.80 

17.50 
15.00 
13.80 
10.00 
15.00 


20.00 
25.00 
20.00 
24.50 
30.00 

16.60 
10.00 
7.00 
6.00 
6.00 

5.50 
5.50 
5.30 
6.00 
7.00 

8.00 
2.90 
2.60 
2.40 
2.30 

2.20 
2.10 
2.10 
4.00 
1.30 

1.30 
1.20 
1.50 
2.00 
1.00 
.50 


0.40 

.30 
.20 
.10 
.10 

.10 
.10 
.20 
.40 
.60 

.80 

1.00 

1.20 

.90 

.60 

1.20 
1.80 
1.60 
1.50 
1.40 

1.30 
1.80 
2.40 
2.90 
3.40 

2.40 

3.90 
2.80 
2.00 
2.00 


3,00 

10.00 
19.00 
10.60 
8.80 

7.30 
6.30 
5.30 
4.30 
3.90 

20.00 
15.00 

9.80 
15.00 

4.70 

2.00 
4.00 
4.00 
2.00 
.50 

.10 

.30 

.50 

2.40 

2.00 

.70 
1.10 
8.00 
11.50 
10.00 
5.00 


0.70 
1.00 
15.00 
11.20 
3.40 

2.00 
2.20 
2.10 
2.30 
2.00 

1.70 
1.50 
2.20 
4.00 
5.70 

3.40 
4.00 
5.50 
7.00 
1.00 

1.00 
1.20 
1.00 
1.00 
.60 

.40 
4.30 
5.00 
4.00 
3.00 
2.00 


7.00 
12.00 
20.00 
30.00 
26.00 

19.00 
19.00 
12.40 
8.20 
7.00 

6.10 
9.50 
6.70 
3.90 
3.00 

3.90 
3.00 
3.50 
3.40 
3.30 

3.50 
3.00 
3.40 
1.70 
1.40 

1.00 

.90 

.70 

.50 

18.00 


10.60 
8.50 
6.40 
4.30 
2.30 

2.10 
1.90 
1.70 
1.50 
2.20 

2.30 
6.90 
3.70 
3.90 
4.00 

2.00 
10.00 
7.80 
9.80 
10.00 

11.00 

15.00 
20.00 
31.00 
11.50 

8.80 
35.00 
30.00 
30.00 
20.00 
10.30 


21.00 
15.00 
30.00 
25.00 
20.00 

10.00 
7.30 
6.70 

17.50 
35.00 

35.00 

24.00 

15.40 

8.50 

5.00 

19.50 
30.00 
17.00 
30.00 
19.50 

10.60 
8.50 

10.60 
7.00 
3.50 

6.30 
5.50 
12.00 
15.00 
13.40 


20.00 


2 


25.00 


3 


18.00 


4 


21.00 


5 


10.60 


6 


9.00 


7 


9.50 


8 


16.20 


9 


9.80 


10 


7.30 


11 


5.90 


12 


5.10 


13 


4.30 


14 


4.50 


15 


6.10 


16 


7.10 


17 


4.90 


18 


3.90 


19 


6.50 


20 


15.00 


21 


8.00 


22 


20.00 


23 


30.00 


24.... 


35.00 


25 


15.40 


26 


20.00 


27 


20.00 


28 


10.30 


29 


9.70 


30 


5.00 


31 


5.00 







Note. — Daily discharge determined from rating curve fairly well denned, except for flood stages. Dis- 
charge for days* for which gage heights are missing estimated "from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 



ISLAND OF HAWAII. 245 

Monthly discharge at station No. 13 at 2,700-foot level, near Hilo, Hawaii, for 1911-12 . 



Month. 



1911 

October 

November 

December 

1912 

January 

February 

March 

April 

May 



'Mean 
discharge 
in second- 
feet. 



3.86 
12.80 
33.70 



1.25 
5.05 
9.39 
16.20 
7.48 



Run-off 
(total in 
acre-feet). 



237. 00 

755. 00 

2, 070. 00 



76.90 
290. 00 
577. 00 
964. 00 
460. 00 



Month. 



1912— Continued 

June : 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



Run-off 

(total in 

acre-feet). 



1.31 

6.36 
3.27 
8.03 
10.50 
16.10 
12.50 



8.11 



78.00 
391. 00 
201. 00 
478. 00 
646. 00 
958. 00 
769. 00 



.00 



Discharge measurements at station No. 14 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 13 


Feet. 
0.74 

.74 


Sec.-ft. 


Nov. 27 


Feet. 

0.85 

.70 


Sec.-ft. 
0.06 


Sept. 27 . 




Dec. 27... . 


.04 











Note.— Bed sand, gravel, and small cobbles; fairly smooth. Shifting. One channel at all stages. 
This stream is tributary to Wailuku River. 

Daily gage height, in feet, at station No. 14 at 2,700-foot level, near Hilo, Hawaii, for 

1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.72 




0.95 

.89 


0.99 




2 


















3 


0.78 
.75 

.74 

.76 

.78 
.81 
.79 

.78 

.72 
.71 
.70 
.70 
.60 


"(a)" 
(a) 


1.01 
.97 
.94 


0.94 
1.00 
1.02 

1.07 






1.39 
1.28 
1.14 

1.-09 

"i.'os" 

1.00 
.92 








1.02 


4 


1.41 
1.39 


"(a)" 


1.39 

.79 

""."84" 

.80 

.95 

1.00 


'T65' 

1.00 

1.24 

1.04 

.91 

.80 
1.00 

.88 
.85 
.82 

.85 


.74 
.74 

.74 
----- 

"".65 

.64 
.75 
.64 
.65 


"".'9l' 

'"".'96' 
.90 
.96 

'""."95" 
.90 

.88 


.72 


5 


.62 


6 


.58 


7 


"*(a)"" 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
0.81 


.95 


.59 


8 






.72 


9 


.98 
.99 

1.00 
1.00 
1.19 
1.21 
1.04 

.81 
1.04 

"1*29* 

1.18 
1.08 
1.05 








.63 


10 


1.42 

1.40 
1.35 

"i.24" 

1.31 

1.30 

"i'.Zl 

1.39 
1.40 

1.44 
1.42 
1.36 






.62 


11 






.60 


12 








.71 

.74 


.58 


13 


1.22 


0.70 


1.30 


.55 


14 


.56 


15 




.66 


1.00 


.77 
.76 


.62 


16 




.95 


.66 


17 




1.00 


0.80 




.54 


18 






.78 


.81 
.79 
.76 

.80 
.82 
.80 
.79 

.75 

.74 

.74 

1.08 


.76 
.80 

""."94" 

.85 

.75 


.95 

"Too" 

.94 
.92 
.95 


.48 


19 


(a) 
(a) 

(a) 
(a) 
(a) 
(a) 


.99 






.58 


20 










21 




.78 


1.00 


""."72" 
.75 
.80 
.75 

.75 
.85 


60 


22 




23... 


.90 




.90 
1.05 

.95 
.89 
.74 
.74 




24 




25 




1.02 

1.00 
.99 
.99 
.96 

1.04 


1.41 

1.41 
1.38 
1.30 


.88 
"""."86' 


.99 

.88 

1.00 

.92 


.90 

.84 
.85 


74 


26 








27 


(a) 
(a) 
(a) 
(a) 




.70 

.64 


28 


29 






.64 


30 










.85 




31 




.78 










.88 



























a Channel dry. 



246 

Daily discharge, in second-feet, at station No. 14 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


0.60 
.50 
.40 
.30 
.25 

.19 
.18 
.17 
.16 
.15 


0.05 
.05 
.05 
.05 
.10 

.11 

.12 
.13 
.14 
.12 


0.10 
.05 
.05 
.05 
.10 

.05 
.05 
.05 
.10 
.05 


11 


0.15 
.14 
.13 
.12 
.12 

.12 
.11 
.10 
.10 
.10 


0.12 
.12 
.12 
.12 
.12 

.10 
.12 
.14 
.15 
.16 


0.10 
.05 
.18 
.22 
.86 

.19 
.60 
.50 

.62 
.34 


21 


0.10 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


0.18 
.19 
.22 
.25 

.28 

.19 
.16 
.16 
.13 
.11 


0.29 


2 


12 


22 


.22 


3 


13 


23 


.19 


4 


14 


24 


.10 


5 


15 


25 


.25 


6 


16 


26 


.19 


7 


17 


27 


.15 


8 


18 


28 


.15 


9 


19 


29 


.34 


10 


20 


30... 


.30 






31 


.25 









Daily discharge, in second-feet, at station No. 14 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


o.io 

.10 
.10 
.05 
.05 

.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.05 

(a) 
(a) 
(a) 
(«) 
(«) 

(a) 
(a) 
(a) 

O) 
(a) 

C«) 

(a) 
(a) 
(a) 
(a) 
(a) 


(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 

(0) 

(a; 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
0.10 

.50 
.90 
1.00 
.90 

.80 

.70 
.60 
.50 
.40 


0.30 
.30 
.20 
.20 
.15 

.15 

.15 
.20 
.20 
.20 

.20 
.20 
.50 
.50 
.25 

.10 

.25 
.80 
.70 
.70 

.45 
.30 
.25 
.20 
.20 

.20 
.20 
.20 
.20 
.25 
.80 


0.30 
.20 
.15 
.20 
.20 

.25 
1.00 
1.00 
.90 
.95 

.90 
.80 
.70 
.60 
.70 

.70 
.70 
.70 
.90 
.90 

1.00 
.95 
.80 
.90 
.90 

.90 
.85 
.70 
.60 
.70 


0.80 
.70 
.80 
.90 

1.00 

.90 
.80 
.80 
.70 
.70 

.60 
.60 
.55 
.40 
.30 

.20 
.20 
.20 
.20 
.20 

.20 
.20 
.15 
.15 
.15 

.10 
.10 
.10 
.10 
.10 
.10 


""6." 05" 
"".05 

'"".'io" 

.10 

"".'26" 

.15 
.20 
.15 


0.10 

.20 
.90 
.65 
.40 

.30 
.30 
.25 
.20 
.15 

.80 
.80 
.70 
.50 
.20 

.20 
.20 
.20 
.20 
.20 

.20 
.20 
.15 
.25 
.20 

.15 
.15 

.05 
.05 
.05 
.05 


0.05 

.10 

.20 
.90 
.10 

.10 
.10 
.10 
.15 
.20 

.10 
.05 
.05 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.10 
.05 

.05 
.10 

.10 
.10 

.10 

.10 


0.30 
.40 
.50 
.60 
.25 

.20 
.60 
.25 
.15 
.10 

.10 
.20 
.15 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.30 
.40 


0.15 
.15 
.10 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.10 

.10 
.30 
.10 
.10 
.20 

.20 
.40 
.60 
.15 

.10 

.05 

1.00 

1.00 
.80 
.60 
.15 


0.20 
.15 
.30 
.20 
.15 

.15 
.15 
.15 
.20 
.80 

.70 
.15 
.15 
.15 
.15 

.15 
.15 
.15 
.15 
.20 

.15 
.15 
.15 
.15 
.15 

.10 
.10 
.10 
.10 
.10 


0.30 


2 


.40 


3... 


.20 


4 


.05 


5 


.05 


6 


.05 


7 


.05 


8 


.05 


9 


.05 


10 


.05 


11 


.05 


12 


.05 


13 


.05 


14 


.05 


15 


.05 


16 


.05 


17 


.05 


18 


.05 


19. 


.10 


20 


.30 


21 


.20 


22 


.40 


23 


.80 


24 


.40 


25 


.05 


26 


.10 


27 


.05 


28 


.05 


29 


.05 


30 


.05 


31 


.05 







a Channel dry. 

Note. — Daily discharge determined from poorly denned rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp 
near station No. 50. 



Monthly discharge at station No. 1 


4 at 2,700-foot level, near Hilo, 


Hawaii, for 


1911-12. 


Month. 


Mean 
discharge 
in second- 
feet. 


Run-off 
(total in 
acre-feet). 


Month. 


Mean 
discharge 
in second- 
feet. 


Run-off 
(total in 
acre-feet). 


1911. 
October 


0.15 
.13 
.22 


9.28 
8.04 
13.30 


1912--Continued. 
June 


0.07 
.29 
.12 
.20 
.22 
.19 
.14 


4.17 




July 


17.80 


December 


August 


7.38 






11 90 


1912. 


.04 
.22 
.31 
.70 
.42 


2.46 
12.70 
19.10 
41.70 
25.80 


October 


13.50 


January 


November 


11.30 


February 


December 


8.61 




The year 






.24 


176. 00 


May 











ISLAND OF HAWAII. 247 

Discharge measurements at station No. 15 at 2,700-foot level, near Hilo, Hawaii, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Aug. 15 
Sept. 27 
Nov. 27 


E. 0. Christiansen. 

do 

.....do 


Feet. 
1.20 
1.00 
1.18 


Sec.-ft. 
1.19 
.39 
1.66 


Nov. 27 
Dec. 27 


E. 0. Christiansen . 
do 


Feet. 
1.18 
1.36 


Sec.-ft. 
1.56 
6.84 







Note. — Bed of stream of gravel, cobbles, and some bowlders. Is somewhat rough. Probably perma- 
nent. One channel at all stages. 
This stream is tributary to Wailuku River. 

Daily gage height, in feet, at station No. 15 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, BelayefE, Selitonott, and KuznetsorT, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.99 




1.29 
1.20 


1.40 




2 . 


















3 


1.22 
1.18 
1.12 

1.18 
1.20 
1.25 
1.22 
1.20 

1.10 
1.02 

.98 
.92 
.92 

.92 


—(a)' 

(a) 


1.15 
1.13 
1.10 


1.12 
1.19 
1.20 
1.20 






1.34 
1.24 
1.20 
1.18 

"i.'i2~ 

1.09 
1.16 








i. 38 


4 


1.58 

1.50 


"0. 64" 


1.34 

1.18 

"'i.'ii' 

1.12 
1.15 
1.04 


"i.'52" 

1.39 
1.51 
1.30 

1.24 

1.08 
1.26 
1.12 
1.04 
1.02 
1.06 


1.08 
1.04 

1.02 

"i.'oo" 

"i.02" 

1.04 
1.27 
1.07 
1.10 


" "i."3i" 

""i'26' 
1.20 
1.43 

""i.'ii" 

1.25 
1.19 


1.42 


5 


1.29 


6 


1.25 


7 


(a) 
(a) 

(a) 
(a) 
0.79 

.78 
.75 

.71 
fa) 

(a) 
.71 
1.32 


1.03 


1.26 


8 


1.32 


9 


1.11 
1.12 

1.15 
1.33 
1.47 
1.63 
1.84 

1.21 
1.38 

"i.*39" 

1.27 
1.14 
1.18 








1.28 


10 


1.48 

1.42 
1.32 






1.22 


11 






1.20 


12 








1.06 

1.09 


1.15 


13 .. 




.90 


1.19 


1.11 


14 . 


1.29 

1.37 

1.22 

"i.~26* 
1.24 
1.21 

1.40 
1.38 
1.26 




1.14 


15 




.86 


1.09 


1.19 
1.09 


1.22 


16 . 




1.40 


1.28 


17 .. 


1.05 


.90 




1.13 


18 .. 






1.18 


1.05 
1.04 
1.02 

1.02 
1.12 
1.04 
1.02 

1.00 

1.00 

.99 

.96 

1.42 


1.18 
1.34 

"i.'ii' 

1.30 
1.20 


1.44 

1.40 

1.29 
1.28 
1.32 


1.12 


19 .. 


.91 
.91 

.90 
.90 
.89 
.88 


1.01 






1.20 


20 










21 




.88 


.89 


"1*02" 

1.00 

1.00 

.99 

.95 
1.15 


1.22 


22 




23 


.90 




.81 
1.02 

.79 
.45 
.28 
.15 




24 




25 




1.16 

1.14 
1.11 
1.10 

1.08 
1.02 


1.32 

1.41 
1.38 
1.29 


.88 
'"'."83' 


.99 

.90 

1.00 

.90 


1.20 

1.18 
1.16 


1.32 


26 








27 


.90 
.90 

.85 

.82 


..:...: 


1.38 


28 


1.30 


29 






1.24 


30 








"i.2i" 


1.22 




31 




.73 

































a Channel dry. 

Daily discharge, in second feet, at station No. 15 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


29.00 
25.00 
21.00 
17.00 
12.90 

7.00 
6.10 
5.20 
4.30 
4.05 


0.40 
.38 
.37 
.64 

1.80 

2.55 
3.30 
4.05 
5.20 
3.80 


0.92 

.64 
.55 
.55 
.64 

.55 
.46 
.46 
.55 
.40 


11 


3.05 
3.05 
2.80 
2.55 
2.30 

2.05 
2.05 
1.58 
1.36 
1.14 


4.05 
4.30 
5.20 
6.10 
7.00 

3.80 
4.05 
4.75 
5.60 
6.55 


0.58 
.43 

4.30 
17.00- 
42.50 

7.00 
39.20 
45.80 
52.40 
15.40 


21.... 


0.92 

.70 
.64 
.58 
.55 

.52 
.46 
.43 
.40 
.38 
.40 


7.45 
8.35 
9.62 
11.30 
12.90 

5.20 
3.80 
3.80 
2.05 
1.25 


5.20 


2 


12 


22 


3.05 


3 


13 


23 .. 


1.80 


4 


14... 


24 . 


1.25 


5 


15 


25 


29.00 


6 


16.... 


26 


18 00 


7 


17 


27 


7.90 


8 


18 


28 


4.75 


9 


19..... -.. 


29.... 


19.00 


10 


20 


30 


17.00 






31 


12.90 









248 

Daily discharge, in second-feet, at station No. 15 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


2.00 


(a) 
(a) 


7.00 


6.00 


12.00 


0.10 


1.00 


0.35 


16.00 


4.05 


8.80 


2.00 


5.00 


2.00 


15.00 


.10 


1.50 


.40 


20.00 


1.80 


12.00 


2.30 


(a) 


1.25 


.90 


20.00 


.10 


6.10 


12.00 


30.00 


1.20 


20.00 


1.60 


(a) 


1.05 


1.70 


25.00 


.10 


2.80 


6.10 


40.00 


.65 


14.00 


.90 


(a) 


.70 


2.05 


40.00 


.10 


1.80 


1.60 


19.00 


.50 


6.10 


1.60 


CO 

(«) 

(a) 


.70 


1.80 


17.00 


.10 


1.60 


1.40 


5.65 


.45 


3.00 


1.80 


.65 


30.00 


10.00 


.10 


1.20 


1.15 


18.00 


.40 


1.80 


3.05 


.70 


28.00 


6.00 


.10 


.90 


.90 


4.30 


.40 


1.80 


2.30 


(a) 


.80 


25.00 


4.00 


.10 


.67 


1.25 


2.80 


.40 


11.20 


1.80 


(a) 


.90 


15.30 


2.00 


.10 


1.35 


.50 


1.70 


.45 


30.00 


.70 


(a) 


1.25 


10.45 


1.00 


.20 


1.50 


.60 


.65 


.50 


20.00 


.45 


(a) 


5.65 


5.20 


1.00 


.20 


1.60 


.60 


3.30 


3.50 


9.60 


.35 


0.10 


14.55 


4.60 


1.00 


.25 


1.70 


.70 


.90 


.60 


3.05 


.25 


.10 


32.00 


4.05 


.50 


.20 


1.20 


1.20 


.50 


.70 


1.70 


.25 


.10 


52.40 


7.45 


.50 


.20 


.67 


1.70 


.45 


.70 


1.50 


.25 


.10 


2.05 


2.30 


.50 


.20 


.50 


.70 


.60 


.50 


8.80 


.25 


(a) 


7.90 


2.80 


.55 


.25 


.50 


1.20 


.60 


10.00 


18.00 


.25 


(a) 
(a) 


7.90 


3.30 


.50 


.20 


.40 


1.60 


.55 


1.60 


12.10 


.25 


7.90 


2.80 


.45 


.20 


.30 


1.20 


.50 


6.10 


10.40 


.25 


5.20 


7.95 


2.05 


.40 


.20 


.30 


.80 


.45 


6.00 


8.80 


.25 


30.00 


3.50 


8.80 


.30 


.20 


.25 


.60 


.45 


6.00 


4.05 


.25 


50.00 


1.15 


7.90 


.30 


.30 


.20 


.45 


.90 


30.00 


3.80 


.25 


60.00 


1.60 


3.30 


.25 


.30 


.10 


.40 


.50 


50.00 


5.20 


.25 


45.00 


1.50 


4.20 


.20 


.30 


.45 


.40 


.45 


12.10 


3.50 


.25 


35.00 


1.35 


5.20 


.20 


.35 


.30 


.35 


.40 


4.30 


1.80 


.25 


30.00 


1.15 


9.60 


.20 


.25 


.10 


.30 


.40 


1.80 


1.60 


.25 


20.00 


.80 


7.90 


.15 


.40 


.10 


1.25 


.40 


60.00 


1.35 


.25 


10.00 


.70 


4.05 


.10 


.25 


.10 


1.00 


.35 • 


50.00 


9.00 


.15 


8.00 


.65 


3.50 


.10 


.20 


.10 


.80 


.30 


40.00 


6.00 


.10 




.95 


4.00 


.10 


.'20 


.20 


.60 


10.45 


20.00 


2.30 


.10 




18.00 




.10 




.20 


.90 




2.05 





Dec. 



1 

2 
3 
4 
5 

6 
7 
8 
9 
10 

11 
12 
13 
14 
15 

16 

17 
18 
19 
20 

21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



14.00 
20.00 

7.90 
10.45 

4.05 

3.05 
3.30 
5.20 
3.80 
2.30 

1.80 
1.25 
.80 
1.15 
2.30 

3.80 
1.05 
.90 
1.80 
8.00 

2.30 

20.00 
40.00 
25.00 
5.20 

6.40 

7.90 
4.30 
2.80 
2.00 
2.00 



a Channel dry. 



Dis- 



Note. — Daily discharge determined from rating curve fairly well defined except for flood stages, 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 15 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



5.14 
4.65 
11.30 



10.10 
6.12 
7.21 
5.14 



Run-off 
(total in 
acre-feet). 



318. 00 
278. 00 
699. 00 



49.20 
581. 00 
376. 00 
429. 00 
316. 00 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.20 
.96 
1.39 
6.02 
10.20 
8.04 
6.93 



5.23 



Run-ofI 
(total in 
acre-feet). 



11.90 
59.00 
85.50 
358.00 
627.00 
478.00 
426.00 



3,800.00 



ISLAND OF HAWAII. 



249 



Discharge measurements at station No. 16 at 2,700-foot level, near Kilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 15 


Feet. 
0.46 
.35 


Sec.-ft. 
0.10 
.01 


Nov. 27 . . 
Dec. 27.. 




Feet. 

0.35 

.66 


Sec.-ft. 
0.05 


Sept. 26 




.14 









Note. — Bed of stream of sand, gravel, and silt. Shifting. One channel at all stages. 
This stream is tributary to Wailuku River. 



Daily gage height, in feet, at station No. 16 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.31 




0.42 
.39 


0.48 




2 


















3 


0.46 
.44 

.42 

.45 

.45 
.48 
.45 
.44 

.42 
.41 
.41 
.40 
.34 

(a) 


-{ay 

(a) 


0.50 
.46 
.40 


0.53 
.54 
.59 

.59 






0.60 
.56 
.55 

.54 

"""52' 

.51 
.52 








0.42 


4 


0.85 
.69 


"6.26" 

'""18* 


.69 

.40 

""."46" 
.39 
.44 

.42 


"6." 49" 
.44 

.50 
.50 
.50 

.48 
.52 
.48 
.46 
.42 

.48 


.28 
.26 

.25 

""."25" 

"".2Q 

.28 
.42 
.25 
.30 


""."46" 

""."34" 

.39 
.56 

"""."48" 
.40 
.38 


.56 


5 


.48 


6 


.45 


7 


"(a)" 

(a) 
(a) 

(a) 
(a) 
0.41 
.32 
.30 

.30 

(a) 
(a) 
.40 

.77 


.40 


.42 


8 






.52 


9 


.51 

.50 

.51 
.56 
.71 
.76 
.64 

.55 

.83 

""."86" 

.68 
.47 
.52 








.45 


10 


.72 

.71 
.69 

""."64" 
.69 

.62 

""."ei" 

.63 

.62 

.72 
.72 
.66 






.42 


11 






.40 


12 








.38 
.39 


.40 


13 


.60 


.37 


.61 


.40 


14 


.41 


15 




.31 


.54 


.44 
.40 


.44 


16 




.50 


.45 


17 


.45 


.40 




.38 


i8 : 






.41 


.39 
.34 
.34 

.35 
.35 
.29 
.25 

.24 
.24 
.24 
.24 
.50 


.40 

.42 

""."45" 
.40 

.38 


.55 

""."56' 

.46 
.42 
.41 


.40 


19 


(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 


.41 






.43 


20 










21 




.39 


.54 


""."45" 
.45 
.45 

.44 

.44 
.44 


42 


22 




23 


.40 




.53 
.52 

.42 
.40 
.35 
.35 




24 




25 




.52 

.51 
.46 
.42 
.41 
.54 


.68 

.70 
.65 
.64 


.40 
"".'38' 


.49 

.45 
.50. 

.47 


.38 

.37 
.35 


.51 


26 


27 


(a) 
(a) 
(a) 
(a) 




""66 


28 


.60 


29 






.45 


30 








"740 


.42 




31 




.30 

































Daily 



a Channel dry. 

second-feet, at station No. 16 at 2,700-foot level, near Hilo, Hawaii, 
for 1911. 



Day. 



1. 

2. 
3 
4, 
5, 

6 

7 
8 
9 
10 



Oct. 



0.70 
.62 
.50 



Nov. 



0.01 
.01 
.01 
.05 
.15 

.16 
.18 
.20 
.21 
.27 



Dec. 



0.05 
.04 
.02 
.04 
.05 

.02 
.02 
.04 
.05 
.05 



Day. 


Oct. 


Nov. 


Dec. 


11 


0.18 
.18 
.16 
.16 
.15 

.15 
.15 
.15 
.14 
.13 


0.26 
.24 
.22 
.21 
.20 

.16 
.18 
.20 
.21 
.22 


0.05 
.05 

.27 

.50 

1.18 

.16 
1.10 

.90 
1.18 

.62 


12 


13 


14 


15 


16 


17 


18 


19 


20 





Day. 



21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



Oct. 



0.12 
.11 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.01 
.01 



Nov. 



0.24 



.27 
.30 



.18 
.13 
.14 
.10 
.05 



Dec. 



0.22 
.18 
.16 
.15 

.78 

.62 
.30 
.28 
.70 
.50 
.30 



250 

Daily discharge, in second-feet, at station No. 16 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 






0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.10 
.35 
.55 
.20 

.10 
.80 
.80 
.90 
.95 

.25 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.10 
.40 


0.20 
.10 
.10 
.10 
.15 

.15 
.70 
.60 
.50 
.40 

.35 
.30 
.30 
.20 
.30 

.20 
.20 
.15 
.20 
.20 

.40 
.40 
.25 
.25 
.25 

.30 
.20 
.20 
.20 
.30 














0.05 




2 




















3 


0.05 








0.15 
.10 
.10 

.10 












4 


0.90 




0.30 








0.10 


5 






0.05 






.05 


6 


.05 
.05 
.05 
.05 




.30 








.05 


7 




.05 
.05 
.05 








8 






.05 
.05 
.05 








.05 


9 








.io 


.05 


10 








11 












.05 
.05 
.05 
.05 








12 
















.05 




13 






.15 




.15 






14-- 












15 










.10 










16 












.05 




.05 


.05 


1£ 






.05 










18 
















.10 




19 




















20 




0.60 














.05 
.05 




21 








.10 










22 










.05 
.05 
.05 








23 










.10 
.05 










24 


















25 








0.05 

.05 
.05 
.05 








.05 


26 


















27 
















.25 


28 
















.15 


29 
















.05 


30 














.05 








31 
































!'"" 











Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp 
near station No. 50. 

Monthly discharge at station No. 16 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.19 
.18 
.34 



Run-off 
(total in 
acre-feet). 



11.90 
10.70 
21.00 



1.23 
17.30 
12.90 
16.10 

6.15 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.04 
.10 
.10 
.05 
.40 
.10 
.08 



15 



Run-off 
(total in 
acre-feet). 



2.38 
6.15 
6.15 
2.98 
24.60 
5.95 
4.92 



107. 00 



ISLAND OF HAWAII. 



251 



Discharge measurements at station No. 17 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 



Aug. 15. 
Sept. 26. 



Gage 
height. 



Feet. 
0.68 
.64 



Dis- 
charge. 



Sec.-ft. 
0.04 



Date. 



Nov. 27. 
Dec. 27. 



Gage 
height. 



Feet. 
0.69 
.72 



Dis- 
charge. 



Sec.-ft. 
0.06 
.15 



Note.— Bed of stream of sand, gravel, and silt. Shifting. One channel at all stages. This stream is 
tributary to Wailuku River. 

Daily gage height, in feet, at station No. 17 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, BelayefE, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















..0.62 




0.70 
.69 


0.71 




2 




















3 


0.68 
.65 
.64 

.65 
.65 
.68 
.65 
.64 

.64 
.65 
.65 
.65 
.65 

.65 


(a) 


0.65 
.65 
.65 


0.70 

.74 
.74 

.72 






0.70 

.70 
.69 

.66 

"""."64" 
.61 
.65 








0.75 


4 


0.92 

.82 


'"6"3i" 
'"."29" 


.79 
.68 

""."76' 
.68 
.66 
.69 


"6" 76" 

.70 
.78 
.70 
.68 

.64 
.68 
.60 
.60 
.59 

.60 


.65 
.65 

.64 

'".'64' 

'".'65' 

.64 
.72 
.65 
.66 


"".'75' 

""."68" 
.68 
.72 

"""."78" 
.75 
.71 


.72 


5 


.70 


6 


.68 


7 


"fa)" 

(a) 
(a) 

fa) 

0.66 
.60 
.59 

.58 

(a) 

(a) 
.63 
.84 


.62 


.68 


8 






.74 


9 


.68 
.70 

.70 

.72 
.77 
.88 
.77 

.71 

.94 

""."9T 

.87 
.69 

.82 








.70 


10 


.74 

.72 

.71 

------- 

.81 

.77 

"""."to" 

.71 
.71 

.76 
.76 
.70 






.68 


11 






.66 


12 








.66 
.67 


.66 


13 


.70 


.56 


.71 


.65 


14 


.66 


15 




.50 


.63 


.68 
.57 


.68 


16 




.78 


.68 


17 


.65 


.68 




.65 


18 






.68 


.61 
.65 
.64 

.62 
.65 
.64 
.64 

.64 
.64 
.63 
.62 
.72 


.68 
.68 

""."74' 
.74 

.75 


.78 

"""75" 

.72 
.72 
.74 


.65 


19 


.64 
.62 

.61 
.61 
.61 
.60 


.61 






?70 


20 










21 




.60 


.64 


""."62" 
.61' 
.62 
.61 

.61 
.66 


.70 


22 




23 


.58 




.61 
.65 

.65 
.65 
.64 
.61 




24 




25 




.71 

.65 
.64 
.64 
.62 
.67 


.75 

.78 
.74 
.72 


.53 
"".*50' 


.75 

.71 

.71 
.70 


.74 

.74 
.70 


72 


26 








27 


.62 
.61 
.60 
.60 




71 


28 


.70 


29 






.65 


30 








'".*64" 


.75 




31 




.40 

































a Channel dry. 

Daily discharge, in second-feet, at station No. 17 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


0.82 
.74 
.66 
.58 
.50 

.50 
.43 
.36 
.34 
.29 


0.10 
.10 
.10 
.12 
.22 

.29 
.36 
.43 
.50 
.46 


0.12 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.12 
.10 


11.. 


0.22 
.22 
.22 
.18 
.18 

.15 
.15 

.18 
.15 
.15 


0.46 

.46 
.46 
.46 
.46 

.32 
.32 
.36 
.36 
.40 


0.14 
.10 
.32 
.58 

1.70 

.32 
1.35 
1.30 
1.46 

.74 


21 


0.14 
.12 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 
.10 


0.40 
.43 
.43 
.46 
.50 

.32 
.18 
.22 
.15 
.14 


0.32 


2 


12.. . 


22 


.22 


3 


13.. 


23 


.18 


4 


14... 


24 


.15 


5..... 


15.. 


25 


1.00 


6 


16.. . 


26 


.70 
.50 


7 


17.. 


27 


8 


18.. 


28 


.43 


9 


19.... 


29 


.58 


10 


20.. 


30 


.54 






31 


.50 









252 



WATER RESOURCES OP HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 17 at 2,700-foot level, near Kilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.15 
.13 
.1* 

.15 
.15 

.15 
.15 
.f5 
.15 
.15 

.15 
.15 
.15 
.15 
.15 

.15 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 
.10 


Ca) 
\a) 

(o) 
(a) 
(a) 

(a) 
(a) 
(a) 
C°) 

r°) 

(a) 

<a) 

0.15 
.10 
.10 

.10 

(a) 

(a) 
.10 
.65 

1.00 
1.30 
1.50 
1.00 
.60 

.40 
.30 
.20 
.20 


0.20 
.20 
.15 
.15 
.15 

.15 
.15 
.15 
.15 
.15 

.15 
.25 
.40 
.80 
.40 

.20 
.10 
.40 
.60 
.95 

.80 
.15 
.60 
.40 
.20 

.15 
.15 
.15 
.15 
.15 
3.00 


1.00 
.50 
.15 
.30 
.30 

.25 

1.30 

1.10 

.90 

.30 

.25 
.20 
.20 
.20 
.55 

.40 
.30 
.15 
.20 
.20 

.35 
.35 
.15 
.20 
.30 

.40 
.30 
.25 
.20 
.30 












0,15 
.15 


0.20 

.30 
.60 
.40 
.30 

.20 
.15 
.15 
.25 
.90 

.80 
.40 
.30 
.20 
.30 

.40 
.40 
.40 
.40 
.30 

.25 
.25 
.30 
.30 
.30 

.30 
.15 
.20 
.20 
.30 


0.40 


2 












1.00 


3 






0.15 

.15 
.15 

.15 






.30 


4 


1.00 




0.45 
.15 

""."is" 

.15 
.15 
.15 






.25 


5 


0.15 

.15 
.40 
.15 
.15 




.15 


6 


.60 




.15 


7 


.15 


8 








.30 


9 








.15 


10 






.15 


.15 


11 










.15 


12 








.is 

.15 


.15 


.25 


.15 


13. 


.15 




.20 


.15 


14 






.15 


15 








.15 






.15 


16 












.15 


17 




0.15 










.15 


18 




.15 


""."is" 


.15 
.15 


.15 


19 








.15 


20. 










.20 


21 














.15 


22 










.15 




.30 


23 










.40 


24 






.15 






.30 
.30 

.30 


.30 


25 




.30 

.20 
.20 
.15 






.25 


26 


.15 
.15 






.30 


27 


.15 




.20 


28. . . . 






.15 


29 










.15 


30 










.25 




.10 


31 










.10 























a Channel dry. 
Note. — Daily discharge determined from poorly denned rating curve. Discharge for days for which gage 
heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp near 



station No. 50. 



Monthly discharge at station No. 17 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May 



Mean dis- 
charge in 
second- 
feet. 



0.26 
.33 

.45 



.13 

.27 
.38 
.38 
.30 



Run-off 
(total in 
acre-feet). 



16.30 
19.80 
27.90 



7.99 
15.50 
23.40 
22.60 
18.40 



Month. 



1912— Continued 

June , 

July 

August. 

September 

October 

November 

December 

The year 



Mean dis- 
charge in 
second- 
feet. 



0.20 
.15 
.15 
.20 
.60 
.33 
.22 



Run-off 
(total in 
acre-feet). 



.28 



11.90 
9.22 
9.22 
11.90 
36.90 
19.60 
13.50 



200. 00 



ISLAND OF HAWAII. 



253 



Discharge measurements at station No. 18 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.J 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug 15 


Feet. 
0.62 
.45 


Sec.-ft. 
0.02 
.04 


NoV. 27 


Feet. 
0.53 
.70 


Sec.-ft. 
0.02 


Sept 26 


Dec. 27 


.13 









Note.— Bed of stream of sand, gravel, and small cobbles; shifting. One channel at all stages. This 
stream is tributary to Wailuku River. 

Daily gage height, in feet, at station No. 18 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.72 




0.62, 
.60 


0.59 




2 


















3 


0.58 
.55 
.54 

.56 
.58 
.62 
.61 
.59 

.55 
.52 
.51 
.50 
.50 

.50 


"6." 42' 
.42 


0.75 
.75 

.74 


0.76 
.80 
.81 

.81 






0.84 
.80 

.78 

.76 

""75' 

.74 
.74 








0.60 


4 


1.02 

.86 


'"6." 40* 
""."38' 


.81 
.74 

"~~m 

.75 

.75 

.72 


"6."54" 

.59 
.61 
.54 
.52 

.45 
.50 
.48 
.49 
.48 

.49 


.51 

.49 

.48 

""."45" 

"""."46" 

.49 
.53 
.50 
.52 


""."66" 

'"""56" 

.55 
.66 

""."66" 

.60 
.58 


.68 


5 


.62 


6 


.60 


7 


""Mi" 

.41 

.40 

.40 
.38 
.42 
.41 
.41 

.41 
.38 
.36 
.50 
.92 


.75 


.61 


8 






.66 


9 


.79 

.80 

.80 
.81 
.97 
.96 
.81 

.75 
.89 

'"".'89* 

.82 
.78 
.80 








.62 


10 


.86 

.79 
.75 

"".12 
.80 

.78 

'".'78' 
.79 
.81 

.83 
.81 

.78 






.61 


11 






.61 


12 








.72 

.74 


.61 


13 


.79 


.68 


,79 


.61 


14 


.62 


15 




.64 


.78 


.63- 
.50 


.64 


16 




.61 


.64 


17 


.73 


.70 




.60 


18 






.56 


.49 
.50 
.49 

.48 
.50 
.48 
.46 

.45 
.45 
.45 
.45 
.65 


.53 

.54 

"".ho 

.60 
.58 


.60 

"'."66" 

.56 
.56 
.60 


.60 


19 


.50 

.50 

.49 
.49 
.48 
.48 


.68 






.62 


20 










21 




.69 


.75 


"".*56" 
.49 
.50 
.50 

.49 
.55 


.62 


22 




23 


.60 




.70 
.79 

.72 
.72 
.72 
.72 




24 




25 




.77 

.75 
.75 

.75 
.74 


.82 

.85 
.82 
.80 


.55 

"""."si" 


.81 

.80 
.82 
.79 


.57 

.54 
.51 


.65 


26 








27 


.50 
.49 
.48 




.70 


28 


.65 


29 






.61 










""."55" 


.60 




31 




.49 

































Daily discharge, in second-feet, at station No. 18 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 


0.17 
.15 
.13 
.11 
.10 

.05 
.05 
.05 
.05 
.05 


0.01 
.01 
.01 
.05 
.05 

.05 
.05 
.05 
.05 
.05 


0.05 
.03 
.01 
.03 
.05 

.05 
.02 
.03 
.05 
.05 


11.. 


0.05 

.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 


0.05 
.03 
.05 
.10 

.44 

.05 
.42 
.35 
.44 
.20 


21 


0.05 
.05 
.05 
.05 
.05 

.03 
.03 
.02 
.01 
.01 
.01 


0.05 

.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 


05 


2 


12 


22 


.05 


3 


13.. . 


23 


05 


4 


14 


24. 


.05 


5 


15 


25.. 


.17 


6 


16 


26.. 


.10 


7 


17 


27 . 


.05 


8 


18 


28.. 


.05 


9 


19 


29.. 


.17 


10.. 


20 


30.. 


.16 






31 


.15 









254 



WATEE EESOUECES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 18 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 






0.20 
.20 
.20 
.20 
.20 

.20 
.20 
.20 
.25 
.25 

.25 
.25 
.55 

.50 
.25 

.20 
.40 
.40 
.40 
.40 

.30 
.25 
.25 
.25 
.25 

.20 
.20 
.20 
.20 
.25 
.50 


0.30 
.20 
.20 
.25 
.25 

.25 
.20 
.30 
.40 
.40 

.25 
.20 
.20 
.15 
.25 

.25 
.25 
.25 
.25 
.25 

.30 
.25 
.15 
.20 
.30 

.30 
.30 
.25 
.20 
.30 






0.20 

.20 
.30 
.25 
.25 

.20 
.20 
.20 
.20 
.20 

.20 
.20 
.25 
.25 
.25 

.25 
.20 
.20 
.20 
.20 

.20 
.20 
.15 
.25 
.20 

.15 
.15 
.15 
.15 
.15 
.15 


0.15 
.20 
.20 
.25 
.20 

.20 
.20 
.20 
.20 
.15 

.15 
.15 
.20 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 
.10 




0.05 
.05 






2 














3 












0.05 


4 






0.65 










.15 


5 ::: 








0.05 


.05 


6 






.40 








.05 


7 






0.05 






.05 


8 


0.05 
.05 












.10 


9 . 










.10 


.05 


10 










.05 


11 
















.05 


12 














.05 

.05 


.05 


13 






.25 


0.15 






.05 


14 










.05 


15 








.10 








.10 












.05 


.10 


17 






.20 


.15 






.05 


18 .. 










.05 


.05 


19 






.15 








.05 


20 




0.45 






.05 










.15 






.05 


22 














23 






.05 








.05 




24 








.05 
.05 




25 








.25 

.25 
.30 
.25 




.10 


26 








27 












.15 


28 












.10 


29 












.05 


30 










.10 




.05 




31 

































Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which gage 
heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp near 
station No. 50. 

Monthly discharge at station No. 18 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.06 
.05 
.11 



0.1 

.10 
.28 
.25 
.10 



Run-off 

(total in 

acre-feet). 



3.52 

2.74 
7.05 



.61 
5.72 
17.20 
14.90 
6.15 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.10 
i20 
.14 
.02 
.40 
.05 
.05 



14 



Run-off 
(total in 
acre-feet). 



5.95 
12.30 
8.61 
1.19 

24.60 
2.98 
3.07 



103.00 



ISLAND OP HAWAII. 



255 



Discharge measurements at station No. 25 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug 15 


Feet. 
0.30 
.06 


Sec.-ft. 
0.22 
.04 


Nov.27 


Feet. 
0.38 
.64 


Sec.-ft. 
0.19 




Dec. 27 


1.20 









Note. — Bed of stream of sand and gravel; slightly shifting. One channel at all stages. This stream is 
tributary to Wailuku River. 

Daily gage height, in feet, at station No. 25 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and KuznetsofE, observers.] 



Date. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.01 






0.62 




2 






















3 


0.35 
.32 
.32 

.40 
.41 

.44 
.42 
.40 

.35 
.30 
.28 
.22 
.15 

.10 


"(a)" 
(a) 


0.30 
.26 
.21 


0.36 

.42 
.42 

.41 






. 0.54 

.48 
.42 

.40 

"""35" 

.34 

.28 






0.54 

.48 
.42 

.40 

""*35" 

.34 

.28 


""."63" 

"\*38" 
.39 
.66 


0.60 


4 


0.84 
.79 


+6.'io" 

+".15 


.39 
.22 

""28" 
.20 
.30 
.30 


" '0. 62' 

.53 
.56 
.50 
.43 

.31 
.38 
.30 
.30 
.24 

.34 


.69 


5 


.54 


6 


.45 




*"(a)"' 
(a) 
(a) 

(a) 
(a) 
0.21 
.10 

(o) 

(a) 

(a) 

(a) 
.11 
.49 


.29 


.45 


8 






.55 


9 


.34 

.39 

.39 
.52 
.65 
.45 
.39 

.30 
.62 

'"'.hi' 

.41 
.30 
.49 








.49 


10 


.68 

.61 
.49 

""."39" 
.42 

.36 

""."■42" 

.47 
.46 

.62 
.62 
.53 






.37 


11 






.32 


12 








.15 
.20 


"■"."42" 
""."32" 


.68 
.49 
.36 

.57 


.28 


13 


.51 


.30 


.42 


.22 


14 


.24 


15 




.21 


.32 


.31 
.20 


.33 


16 


.36 


17 


.20 


.30 




.22 


18 






.30 


.22 

.18 
.12 

.15 
.19 
.12 
.10 




.68 


.22 


19 


(a) 
(a) 

(a) - 
(a) 
(a) 
(a) 


.20 






.28 


20 








.30 

""'."22" 
.35 


.63 

.54 
.50 
.54 




21 




.25 


.30 


"""."io- 

.10 
.20 
.21 

.18 
.30 


.40 


22 




23 


.19 




.22 
.35 

.26 
.22 
.21 




24 




25 




.40 

.31 
.26 
.20 
(a) 
.36 


.58 

.64 
.63 
.61 


.11 

""."io" 


.45 

.40 

.48 
.40 


.50 

.42 
.38 

""."49" 


.52 


26 






.06 
.06 
.05 
.04 
.64 


.26 
.22 
.21 
.22 




27 


(a) 
(a) 
(a) 
(a) 




.61 


28 


.48 




.40 


30 










31 









































a Channel dry. 

Daily discharge, in second-feet, at station No. 25 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Date. 



1. 
2. 
3. 
4. 
5. 

6, 

7. 
8 
9 
10 



Oct 


Nov. 


Dec. 


2.20 


(a) 


(a) 


1.50 


(a) 


(a) 


1.00 


(a) 


(a) 


.60 


(a) 


(a) 


.45 


0.30 


(a) 


.30 


.45 


(a) 


.39 


.60 


(a) 


.48 


.80 


(a) 


.57 


1.00 


(a) 
(a) 


.64 


2.06 



Date. 


Oct. 


Nov. 


Dec. 


11 


0.68 
.60 
.54 

.48 
.42 

.39 
.36 
(a) 
(a) 
(a) 


1.78 
1.57 
1.40 
1.25 
1.10 

1.00 
1.10 
1.20 
1.30 
1.40 


(a) 

(a) 
1.10 
1.64 
4.2p 

1.64 
3.96 
3.64 
4.12 
2.36 


12 


13.... 


14 


15 


16 


17 


18 


19 


20 





Date. 



21 
22, 
23 
24 
25 

26 
27 
28 
29 
30 
31 



Oct. Nov. Dec 



(a) 
(a) 
(a) 
(a) 
(a) 

(a) 

(a) 
(a) 
(a) 
(a) 
(a) 



1.50 
1.64 
1.78 
1.92 
2.06 

1.20 
1.00 
1.05 
1.00 



1.57 
.68 
.54 
.45 

2.84 

2.06 
1.25 
1.25 
2.06 
1.85 
1.50 



a Channel dry. 



256 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 25 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


0.20 


(a) 


0.15 


1.00 


1.00 


0.05 


0.30 


0.10 


0.80 


0.90 


1.10 


.20 


(a) 


.15 


.50 


1.50 


.05 


.40 


.10 


1.00 


.70 


1.80 


.20 


(a) 


.15 


.25 


2.00 


.05 


.75 


1.00 


2.00 


.75 


2.50 


.20 


(o) 


.15 


.35 


2.50 


.05 


.55 


.30 


3.00 


.55 


1.30 


.20 


(a) 


.10 


.35 


3.00 


.05 


.35 


.10 


1.10 


.35 


1.15 


.30 


(a) 


.10 


.35 


2.10 


.05 


.30 


.10 


.70 


.30 


.30 


.35 


(a) 
(a) 


.15 


3.00 


1.00 


.05 


.20 


.15 


.85 


.20 


.25 


.40 


.20 


2.50 


.50 


.05 


.20 


.10 


.60 


.20 


.30 


.35 


(a) 
(a) 


.20 


2.00 


.40 


.05 


.20 


.15 


.40 


.20 


1.30 


.30 


.30 


1.40 


.30 


.10 


.15 


.15 


.20 


.15 


3.00 


.20 


(a) 


.30 


1.05 


.40 


.10 


2.00 


.10 


.15 


.20 


2.50 


.15 


(a) 


.70 


.55 


.50 


.15 


1.00 


.05 


.25 


.30 


1.40 


.15 


0.10 


1.25 


.40 


.65 


.15 


.35 


.10 


.15 


.35 


.55 


.10 


.05 


.45 


.30 


.50 


.10 


.50 


.10 


.15 


.30 


.25 


.05 


(a) 


.30 


.35 


.40 


.10 


.20 


.15 


.10 


.20 


.20 


.05 


ffl 


.15 


.25 


.20 


.10 


.10 


.10 


.20 


.10 


.90 


.05 


1.10 


.30 


.10 


.15 


.20 


.10 


.10 


.50 


1.20 


.05 


(a) 


1.50 


.35 


.10 


.15 


.20 


.15 


.10 


.20 


1.40 


(a) 


.05 


1.00 


.50 


.10 


.10 


.20 


.20 


.10 


.30 


1.20 


(a) 


.55 


.65 


.50 


.10 


.10 


.20 


.15 


.05 


.40 


1.15 


(a) 


2.00 


.35 


1.10 


.10 


.10 


.15 


.10 


.05 


.15 


.75 


(a) 
(a) 


3.00 


.15 


1.10 


.10 


.20 


.10 


.05 


.10 


.20 


.60 


3.50 


.55 


.70 


.10 


.20 


.10 


.05 


.05 


.10 


.75 


(a) 


2.50 


.40 


.80 


.10 


.30 


.20 


.10 


.05 


.20 


.70 


(a) 


1.50 


.30 


.90 


.05 


.45 


.20 


.10 


.05 


.10 


.60 


(a) 


1.00 


.15 


1.20 


.05 


.30 


.15 


.10 


.05 


.15 


.35 


(a) 
(a) 
(a) 


.50 


.15 


1.15 


.05 


.55 


.10 


.15 


.05 


.10 


.25 


.30 


.10 


1.05 


.05 


.30 


.10 


.10 


.05 


.10 


.70 


.20 


(a) 


.50 


.05 


.30 


.10 


.10 


.10 


.10 


.60 


(a) 




.25 


.80 


.05 


.30 


.10 


.10 


1.20 


.10 


.55 


(a) 




2.00 




(a) 




.10 


.10 




.10 





Dec. 



l 
2 
3 
4 
5 

6 

7 
8 
9 
10 

11 
12 

13 
14 
15 

16 
17 

18 
19 
20 

21 

22, 
23 
24 
25. 

26. 
27. 
28. 
29. 
30 
31. 



1.50 
2.50 
1.00 
1.45 
.75 

.45 
.45 

.80 
.55 
.25 

.20 
.15 
.10 
.10 
.20 

.25 
.10 
.10 
.15 

.40 

.30 
1.00 
3.00 
1.50 

.70 

1.00 
1.05 
.55 
.30 
.20 
.10 



a Channel dry. 

Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 25 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

N ovember 

December 

1912 

January 

February 

March 

April 

May 



discharge 

in second 

feet. 



0.37 
1.71 
1.25 



.11 

.53 
.43 

.85 
.58 



Run-off 
(total in 
acre-feet). 



23.10 
63.90 
77.10 



6.76 
30.50 
26.40 
50.60 
35.70 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



Run-off 

(total in 

acre-feet). 



0.16 
.31 
.15 
.46 

.28 



9.52 
19.10 

9.22 
27.40 
17.20 
58.90 
41.80 



333.00 



Discharge measurements at station No. 26 at 2,700-foot level, near Hilo, Hawaii) in 1912. 
[E. O. Christiansen, hydrographer.J 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 




Feet. 
0.62 
.61 


Sec.-ft. 
0.02 


Nov. 27 


Feet. 
0.70 
.90 


Sec.-ft. 
0.05 


Sept. 26 , 


Dec. 27 


.31 











Note.— Bed of stream of silt, sand, and gravel; shifting. One channel at all stages. 



ISLAND OF HAWAII. 



257 



Daily gage height, in feet, at station No. 26 at 2, 700-foot level, nearHilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.62 




0.80 

.75 


0.68 




2 


















3 


0.75 

.72 
.71 

.74 
.75 
.78 
.75 

.72 

.70 
.68 

(a) 

(a) 

(a) 

(a) 


"if 


.0.67 
.65 
.63 


0.69 
.74 
.70 

.72 






0.79 
.71 
.70 

.70 

"".*68" 
.67 
.69 








0.74 


4 


0.90 

.94 


" "6." 38* 
"W 


.79 

.62 

""."63* 
.60 
.62 

.62 


"6." 75' 

.71 
.72 
.70 
.70 

.68 
.75 
.70 
.70 
.69 

.69 


.62 
.61 

.60 

"".Ql 

""."60" 

.61 
.75 
.62 
.64 


""*72" 

"""."68" 
.68 
.75 

""."79" 
.72 
.64 


.84 


5 : 


.80 


6 


.79 


7 


(a 

w 

(a) 
(a) 
(a\ 
(a) 
(a) 

(a) 
{a) 
(a) 
0.60 
.92 


.65 


.78 


g 






.82 


9 


".66 
.66 

.70 
.71 
.79 
.81 
.71 

.61 
.83 

"".'88" 

.82 
.71 
.69 








.78 


10 


.78 

.75 
.70 

""'.'68* 
.71 

.69 
....... 

.74 

.72 

.79 
.74 
.74 






.77 


11 






.75 


12 








.63 
.61 


.73 


13 


.89 


.61 


.75 


.71 


14 


.72 


15 




.59 


.69 


.64 
.60 


.75 


16 




.74 


.76 


17 


.70 


.62 




.71 


18 






.66 


.65 
.64 
.62 

.65 
.70 
.68 
.65 

.61 
.61 
.60 
.68 
.60 


.74 

.74 

'"*.*75" 

.72 

.71 


.75 

....... 

.73 
.70 

.72 


.71 


19 


(a) 
(a) 

(a) 
(a) 
(a) 
(a) 


.68 






.77 


20 










21 




.60 


.68 


"""."ei" 

.61 
.62 
.60 

.60 
.65 


.78 


22 




23 


.60 




.65 

.72 

.68 
.64 
(a) 
.65 




24 




25. 




.71 

.64 
.64 
.64 
.62 
.71 


.81 

.89 
.80 

.78 


.58 

'"'.hi' 


.70 

.68 
.71 
.68 


.72 

.70 
.70 


.81 


26 








27 


fa) 

(a) 
(a) 
(a) 




.88 


28 


.86 


29 






.81 


30 








"""."72" 


.72 




31 




.48 

































a Channel dry. 

Daily discharge, in second-feet, at station No. 26 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 



l 

2 
3 
4 
5 

6 
7 
S 
9 
10 



Oct. 


Nov. 


Dec. 


0.27 


0.05 


0.05 


.15 


.05 


.05 


.15 


.05 


.05 


.15 


.05 


.05 


.13 


.05 


.05 


.13 


.05 


.05 


.11 


.05 


.05 


.10 


.05 


.05 


.05 


.10 


.10 


.05 


.05 


.05 



Day. 



11 
12 
13 
14 
15 

16 
17 
18 
19 
20 



Oct. 


Nov. 


Dec. 


0.05 


0.05 


0.10 


.05 


.05 


.05 


.05 


.05 


.13 


.05 


.05 


.22 


.05 


.05 


.81 


.05 


.05 


.18 


.05 


.10 


.52 


.05 


.10 


.40 


.05 


.10 


.45 


.05 


.11 


.22 



Day. 



21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



Oct. 



0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 



Nov. 



0.12 
.13 
.14 
.15 
.16 

.14 
.10 
.10 
.05 

.05 



Dec. 



0.13 
.05 
.05 
.05 
.40 



.13 
.10 
.22 
.15 
.10 



14694°— wsp 336—14- 



-17 



258 WATER RESOURCES OF HAWAII, 1912. 

Monthly discharge at station No. 26 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 



October... 
November. 
December. 



1912. 



January.. 
February. 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



4.72 
4.78 
10.50 



1.84 
11.50 
4.92 
4.76 
4.92 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 



The year. 



discharge 
in second- 
feet. 



0.03 
.05 
.05 
.05 
.20 
.07 
.10 



Run-off 
(total in 
acre-feet). 



1.79 
3.07 
3.07 

12^30 
4.17 
6.15 



61.50 



Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from 
rainfall record at camp near station No. 50. 

Discharge measurements at station No. 27 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.J 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage, 
height. 


Dis- 
charge. 


Aug. 15 


Feet. 
1.61 
1.26 
1.80 


Sec-ft. 
4.26 
.86 
6.45 


Nov.27 


Feet. 
1.64 
2.00 


Sec-ft. 
3.21 


Sept. 27 


Dec. 27 


12.7 


Nov. 22 











Note. — Bed of stream of cobbles and bowlders. Section near gage is rough; probably permanent. 
One channel at all stages. 

Daily gage height, in feet, at station No. 27 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. . 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















1.28 




1.71 
1.62 


2.08 




2 


















3 


1.55 
1.50 
1.45 

1.42 

1.42 
1.42 
1.41 
1.38 

1.35 
1.32 
1.28 
1.25 
1.25 

1.21 


"*6.'92* 
.92 


1.62 
1.56 
1.49 


1.71 
1.80 
1.84 

1.86 






1.90 
1.80 
1.74 

1.68 

"i.'52* 
1.48 
1.42 








1.96 


4 


2.20 
1.98 


"i.'oo* 

"".92 


1.56 
1.43 

"i'.te 
1.34 
1.38 
1.34 


"2.'08' 

1.94 
1.97 
1.78 
1.69 

1.53 
1.85 
1.69 
1.48 
1.39 

1.58 


1.40 
1.31 

1.26 

" *i.*27" 

" "i.34" 

1.33 
1.84 
1.52 
1.55 


""2*6i" 

"i.'72* 
1.69 
2.05 

*"i. r 98" 
2.00 
1.68 


1.98 


5 


1.82 


6 


1.72 


7 


"".'9*6' 
.90 

.88 

.88 

.85 

1.25 

1.20 

1.05 

1.00 

.95 

.89 

1.25 

1.87 


1.45 


1.77 


g 






1.95 


9 -. 


1.50 
1.52 

1.65 
1.98 
2.21 
2.21 
1.95 

1.66 

1.78 

"i.'sjo" 

1.82 
1.71 
1.79 








1.81 


10... 


2.26 

2.08 
1.89 

"L74* 
1.80 

1.71 

"i.*82* 
1.85 
1.82 

1.99 
1.95 
1.81 






1.72 


11 






1.64 


12 








1.31 
1.38 


1.59 


13 


1.59 


1.20 


1.79 


1.54 


14 


1.54 


15 




1.16 


1.49 


1.60 
1.41 


1.63 


16 




1.92 


1.78 


17 


1.42 


1.30 




1.41 


18 






1.52 


1.51 
1.44 
1.29 

1.04 
1.42 
1.34 
1.32 

1.25 

1.24 
1.22 
1.24 
1.84 


1.88 
2.02 

"i'iiT 
1.88 

1.75 


2.02 

" "2. 66" 

1.86 

1.81 
1.94 


1.55 


19 


1.18 
1.15 

1.10 
1.10 
1.09 
1.08 


1.41 






1.70 


20 .. 










21 




1.22 


1.30 


■*L25" 
1.22 
1.46 
1.37 

1.34 
1.45 


1.75 


22 




23 


1.37 




1.29 
1.39 

1.32 
1.35 
1.35 
1.39 




24 




25 




1.72 

1.55 
1.47 
1.42 
1.39 
1.44 


1.89 

2.14 
2.12 
2.05 


1.30 
"*i."23" 


1.42 

1.40 
1.49 
1.41 


1.81 

1.70 
1.64 


1.92 


26 .. 








27 


i. 66 

.98 
.95 
.91 




2.04 


28 


1.86 


29 






1.82 


30 .. 








'"2."66" 


1.80 




31 




1.16 

































ISLAND OF HAWAII. 



259 



Daily discharge, in second-feet, at station No. 27 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Pay. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




15.0 
15.5 
17.0 
18.0 
20.1 

15.0 
11.0 
9.8 
.9.0 
9.6 

6.0 
6.0 
5.8 
5.7 
5.5 


1.0 
1.0 
1.0 
1.6 
3.2 

3.7 

4.2 
4.9 
8.4 
6.2 

7.9 
9.8 
12.2 
15.0 
18.0 


2.1 
2.0 

1.7 
1.6 
1.7 

1.0 
1.4 
1.4 
2.2 
1.7 

. 1.9 

1.6 

11.0 

18.0 

77.0 


16 




5.3 
5.3 

3.2 
2.8 
2.5 

2.2 
2.0 
1.9 
1.7 
1.6 

1.5 
1.3 
1.2 
1.0 
.9 
1.0 


6.2 
7.0 

7.9 
8.7 
9.8 

11.4 
13.0 
15.0 
17.0 
19.4 

9.0 
5.3 
4.2 
2.5 
2.2 


39.4 


2 




17 




61.0 


3 




18 




61.0 


4 




19 




77.0 






20 




42.6 


6 




21 




18.0 


7 




22 




7.6 


8 




23 




4.8 


9 




24 




3 


10 




25 




21.5 


11 




26 




8.4 


12 . 




27 




6.2 






28 


14.0 
13.0 
14.0 


5.3 


14 




29 


9.8 


15 :.... 




30 

31 


9.0 






7.6 











Daily discharge, in second-feet, at station No. 27 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1 
2 
3 
4 
5 

6 

7 
8 
9 
10 

11 
12 
13 
14 
15 

16 

17 
IS 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



2.80 
2.80 
2.80 
2.30 
2.00 

1.70 
1.70 
1.70 
1.70 
1.50 

1.40 

1.20 

1.00 

.90 

.90 

.70 
.70 
.60 
.60 
.50 

.40 
.40 
.40 
.40 
.30 

.30 
.20 
.20 
.10 
.10 
.10 



0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.90 
.70 
.30 

.20 
.10 
.10 
.90 
8.20 

15.00 
20.00 
25.00 
30.00 
20.00 

10.00 
5.00 
8.00 

10.00 



5.00 
4.00 
3.40 
2.80 
2.20 

2.10 
2.00 
2.20 
2.30 
2.50 

3.80 
12.00 
26.00 
26.00 
11.00 

3.90 
5.80 
10.00 
10.00 
9.00 

6.80 
4.60 
6.00 
5.00 
4.80 

2.70 
2.10 
1.70 
1.50 
1.90 
25.00 



15.00 
9.00 
4.60 
6.20 
7.30 

7.90 
30.00 
30.00 
30.00 
30.00 

17.00 
8.70 
9.00 
5.10 
6.20 

4.60 
10.00 



13.00 
11.00 

6.50 
10.00 

8.70 

21.00 
19.00 
15.00 
10.00 
10.00 



10.00 
15.00 
20.00 
25.00 
30.00 

12.00 
8.00 
5.00 
5.00 
5.00 

5.00 
4.00 
3.10 
3.00 
4.00 

3.00 
1.70 
2.00 
1.70 
2.00 

1.50 
1.00 
1.40 
1.50 
1.10 

.90 



0.50 
.40 
.30 
.20 
.20 

.10 
.10 
.10 
.20 
.30 

.40 
.50 
.70 



1.10 

1.00 

.90 



1.00 
1.20 
1.40 
1.70 

1.60 
2.20 
1.70 
1.50 
1.50 



3.00 
5.00 
9.00 
6.20 
5.10 

4.20 
3.40 
2.50 
2.20 
1.70 

15.00 
10.00 
6.00 
8.00 
2.20 

2.00 
1.50 
1.50 
1.30 
1.20 

1.10 

1.10 
1.10 
1.60 
1.40 

1.20 
1.30 
1.30 
1.60 
l.EO 
1.00 



1.00 
1.00 
5.00 
2.80 
1.80 

1.80 
1.90 
1.30 
1.50 
1.30 

1.20 
1.10 
1.50 
3.00 
3.20 

1.70 
2.00 
2.50 
3.00 
2.00 

1.50 

.90 

.80 

2.00 

1.40 

1.30 
2.00 
2.00 
1.50 
1.50 
1.50 



5.00 
12.00 
20.00 
30.00 
17.00 

11.00 
12.00 
5.80 
4.30 
3.00 

2.60 
7.60 
4.30 
2.20 
1.50 

3.00 
2.70 
2.40 
1.90 
1.10 



.90 
7.30 



4.60 
3.40 
3.00 
1.60 
1.20 

.90 

.90 

1.00 

1.00 

1.30 

1.20 
7.30 
2.50 
2.80 
3.00 

2.00 
20.00 

8.40 
14.00 
12.00 

12.00 
20.00 
30.00 
24.00 
8.40 

5.30 
30.00 
25.00 
20.00 
15.00 
13.00 



17.00 
15. 00 
25.00 
20.00 
14.00 

5.00 
4.80 
4.30 
16.00 
25.00 

20.00 
12.00 
13.00 
4.20 
3.00 

9.80 
20.00 
14.00 
15.00 
13.00 

7.90 
6.50 
11.00 
8.00 
6.50 

4.40 
3.70 
10.00 
8.00 
6.20 



20.00 
30.00 
11.00 
12.00 



4.80 
5.70 
11.00 
6.50 
4.80 

3.70 
3.10 
2.70 
2.70 
3.60 

5.80 
1.70 
2.80 
4.40 
10.00 

5.30 
15.00 
30.00 
20.00 

9.80 

20.00 
15.00 
7.90 
6.80 
5.00 
5.00 



Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No .50. 



260 WATER RESOURCES OF HAWAII, 1912. 

Monthly discharge at station No. 27 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December.. . 

1912, 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.66 
.79 
1.64 



1.05 
5.37 
6.71 
12.50 
5.66 



Run-oft 
(total in 
acre-feet). 



40.70 
47.10 
101. 00 



64.60 
309.00 
413. 00 
744. 00 
348. 00 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



0.81 
3.39 
1.84 
5.52 
9.51 
11.40 
9.45 



6.09 



48.20 
208.00 
113. 00 
328. 00 
585.00 
678. 00 
581. 00 



4,420.00 



Discharge measurements at station No. 28 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrograp her.) 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 15 


Feet. 
1.21 
.68 
1.58 


Sec.-ft. 
8.27 
2.01 
16.2 


Nov. 27 


Feet. 
1.30 
1.98 


Sec.-ft. 
9 85 


Sept. 26 


Dec. 27 — 


42 9 


Nov. 22 











Note. — Bed of stream of cobbles and bowlders; section near gage is rough; probably permanent. One 
channel at all stages. 

Daily gage height, in feet, at station No. 28 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
* [Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.69 




1.70 

1.46 


2.14 




2 


















3 


1.12 
1.08 
1.02 

1.01 
1.08 
1.12 
1.10 
1.08 

.85 
.80 
.75 
.72 
.70 

.68 


"6.'i3" 
.10 


1.29 
1.12 
1.02 


1.69 
1.79 
1.81 

1.83 






1.91 
1.66 
1.48 

1.36 

"i."i9" 

1.11 

.97 








1.88 


4 


2.25 
1.95 


"6"6i" 

""."60" 


1.62 
1.10 

""'."99" 
.85 
.98 
.94 


*2."i2' 

1.98 
2.06 
1.69 
1.59 

1.34 
1.86 
1.58 
1.34 
1.04 

1.32 


1.01 

.86 

.78 

"."'."65' 

"""."80" 

.80 
1.92 
1.48 
1.40 


"*2."20" 

*"i.52" 

1.46 
2.15 

"'2.' 15' 

1.S8 
1.52 
1.20 

1.85 


1.81 


5 


1.59 


6 


1.49 


7 


""."05" 
.05 
.04 

.04 
.02 
.51 
.43 
.31 

.26 
.18 
.09 
.50 
1.48 


.95 


1.61 


8 






1.82 


9 


1.08 
1.15 

L99 
2.32 
2.30 
1.92 

1.64 
1.77 

l!50 
1.78 








1.67 


10 


2.26 

2.10 
1.83 

"1*55" 
1.64 

1.54 

"i.'68" 
1.73 
1.70 

1.99 
1.85 
1.68 






1.49 


11 






1.36 


12 








.80 
.90 


1.26 


13 


1.30 


.90 


1.69 


1.18 


14 


1.18 


15 




.86 


1.14 


1.22 

.96 


1.28 


16 


1.47 


17 


1.00 


.88 




1.26 


18 






1.24 


1.11 
.99 
.91 

.84 
.99 
.81 

.78 

.67 
.64 
.61 
.60 
1.85 


1.82 
2.05 
2.80 

""2.' 32" 
1.80 

1.68 


1.90 

""L"92" 

1.72 
1.62 
1.82 


1.13 


19. . 


.62 
.52 

.46 
.44 
.42 
.41 


.98 






1.45 


20 








2.68 


21 




.84 


.99 


""."78" 

.64 

1.00 

.71 

.68 
1.19 


1.54 


22 .. 




23 


.81 




.89 
1.34 

.'85 

1.02 

.95 

.92 




24 




25 




1.68 

1.24 
1.07 
.94 
.82 
1.00 
3.41 


1.93 

2.22 
2.13 
2.06 


.79 

'"."78" 


.99 

.90 

1.20 

.93 


1.54 

1.40 
1.31 


1.90 


26 








27 


.40 
.40 
.39 
.38 




2.04 


28.. 


1.74 


29 






1.64 


30 








"*2."6i" 


i.88 




31... 




.69 





























ISLAND OF HAWAII. 



261 



Daily discharge, in second-feet, at station No. 28 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




42.0 
49.0 
49.0 
49.0 
49.0 

38.5 
28.0 
25.0 
22,2 
19.8 

17.0 
16.2 
15.4 
14.7 
14.1 


1.7 

1.7 
1.7 
3.0 
6.0 

8.8 
li.6 
16.2 
22.2 
14.4 

19.8 
26.0 
35.0 
44.8 
57.0 


6.2 

4.8 
4.2 
4.5 
4.8 

3.8 
2.8 
3.0 
6.4 

5.8 

6.0 

5.5 

24.0 

45.5 

122.0 


16 




13.8 
13.5 
7.0 
6.0 
5.5 

5.0 
4.5 
4.0 
3.5 
3.0 

2.6 
2.1 
1.9 
1.7 
1.4 
1.7 


17.0 
19.8 
22.2 
25.0 
28.0 

32.2 

36.4 
40.6 
44.8 
49.0 

23.0 
15.0 
13.5 
11.0 

8.8 


61.0 


2 




17... 




79.4 


3 . 




18 




81.0 


4 




19 




99.8 


5 




20 




69.0 


6 




21 




33.6 


7 




22 




28.0 


8 




23 




25.5 


9 




24 




23.0 


10 




25 




58.6 


11 .. 




26 




42.0 


12 




27 




35.0 


13 




28 


42.0 
28.0 
35.0 


27.0 






29 


42.0 


15 




30 


38.5 






31 


35.0 











Daily discharge, in second-feet, at station No. 21 

for 1912. 



at 2,700-foot -level, near Hilo, Hawaii, 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1 

2 
3 
4 
5 

6 
7 

8 
9 
10 

11 

12 
13 
14 
15 

16 
17 

18 
19 
20 

21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



6.00 
6.00 
6.40 
5.80 
5.20 

5.10 

5.80 
6.40 
6.00 
5.80 

3.50 
3.00 
2.60 
2.40 
2.20 

2.10 
2.00 
1.90 
1.80 
1.30 

1.00 
1.00 
.90 



0.20 
.20 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
1.20 
.90 
.40 

.30 

.20 

.10 

1.20 

14.00 

100.00 
140. 00 
170. 00 
100. 00 
40.00 

30.00 
20.00 
10.00 
10.00 



10.00 
10.00 
9.80 
6.40 
5.20 

5.00 
4.50 
5.00 
.5. 80 
7.00 

22.60 
41.30 
66.60 
65.00 
36.40 

20.60 
26.50 
29.00 
31.50 
34.30 

22.60 
15.00 
27.00 
30.00 
22.20 



5.70 
4.40 
3.20 
5.00 
58.00 



90.00 
50.00 
22.60 
27.00 
28.70 

30.10 
L60. 00 
150. 00 
140. 00 

61.80 

49.00 
30.10 
24.00 
17.00 
20.60 

16.60 
30.00 
22.20 
24.50 
23.00 

41.30 
31.50 
22.20 
40.00 
37.10 

58.60 
51.40 
46.20 
30.00 
20.00 



30.00 
40.00 
50.00 
61.00 
100. 00 

38.50 
20.00 
10.00 
10.00 
10.00 

10.00 
10.00 
10.00 
10.00 
5.00 

5.00 
5.00 
5.00 
4.80 
4.00 

4.00 
4.00 
3.10 
3.00 
2.90 

2.80 
2.80 
2.60 
2.40 
2.20 
2.10 



2.00 
2.00 
1.90 
1.90 
1.80 



70 



1 

1. 

1.80 

1.90 

2.00 

2.50 
3.00 
4.00 
3.80 
3.60 

3.70 
3.80 
3.70 
3.60 
3.50 

3.40 
3.80 
4.20 
4.60 
4.90 

4.00 
8.00 
4.30 
4.00 
4.00 



4.00 
10.00 
35.70 
21.40 
14.40 

11.20 
9.50 
7.80 
6.20 
4.70 

150. 00 
80.00 
22.60 
50.00 
6.80 

5.00 
5.00 
5.00 
5.00 
5.00 

4.90 
4.40 
3.90 
10.80 
6.00 

3.50 
5.20 
4.50 
4.20 
3.50 
2.80 



2.10 
40.00 
25.00 
19.80 

6.00 

5.40 
4.90 
3.50 
4.80 
4.40 

3.70 

3.00 
4.00 
4.50 
8.40 

4.60 
6.00 
8.80 
15.00 
10.00 

6.40 
2.80 
1.90 
5.00 
2.30 

2.10 

7.80 
6.00 
5.00 
4.00 
5.00 



50.00 
60.00 
100. 00 
140. 00 
51.00 

41.00 
46.00 
23.00 
19.00 
15.00 

11.00 
32.00 
18.00 
11.00 
5.40 

10.00 
8.00 
6.20 
4.90 
4.19 

3.40 

4.90 
3.10 
2.80 



2.00 
1.90 
1.70 
1.70 
32.00 



23.00 
14. 00 
10.00 
5.10 
3.60 

2.80 
2.40 
1.90 
2.40 
3.00 

3.00 
36.00 
14.00 
12.00 
12. 00 

10.00 
60.00 
29.00 
45.00 
107.00 

120.00 
150. 00 
170. 00 
67.00 
28.00 

22.20 
170.00 
150.00 
150.00 
100. 00 

43.00 



52.00 
90.00 
120. 00 
70.00 
57.00 

36.00 
16.00 
14.00 
53.00 
150.00 

120. 00 
53.00 
34.00 
16.00 
8.00 

32.00 
40.00 
35.00 
40.00 
36.00 

24.00 
20.00 
29.00 
23.00 
17.00 

12.00 
10.00 
50.00 
40.00 
34.00 



70.00 
100.00 
34.00 
29.00 
19.00 

15.00 
19.00 
29.00 
22.00 
15.00 

11.00 
9.20 
7.60 
7.60 
9.60 

14.00 
9.20 
6.60 
13.00 
96.00 

17.00 
100.00 
150.00 
100.00 

35.00 

60.00 
45.00 
25.00 
21.00 
10.00 
10.00 



Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 



262 



Monthly discharge at station No. 28 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December 

1912 

January 

February 

March 

April 

May 



discharge 
in second- 
feet. 



17.00 
21.90 
33.20 



2.92 
17.60 
24.30 
46.50 
15.20 



Run-off 

(total in 

acre-feet). 



1,040 
1,300 
2,020 



180 
1,010 
1,490 
2,770 

935 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



3.31 
16.50 

7.49 
23.70 
50.50 
44.40 
35.60 



24.00 



197 
1,010 

461 
1,410 
3,110 
2,640 
2,190 



17,400 



Discharge measurements at station No. 29 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.] 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Aug. 15 
Sept. 26 


E. O. Christiansen. 
do 


Feet. 
0.34 


Sec.-ft. 

(o) 


Nov. 22 
Dec. 12 


E. O. Christiansen. 
do 


Feet. 
0.45 
.36 


Sec.-ft. 





a Channel dry. 
Note. — Bed of stream of silt, sand, and gravel. Shifting. One channel at all stages. 

Daily gage height, in feet, at station No. 29 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.30 




0.53 

.40 


0.52 




2 


















3 


0.42 
.41 
.40 

.42 
.44 
.48 
.45 
.42 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 


"(«)" 

(a) 


0.33 
.25 
.20 


0.31 
.43 
.40 

.39 






0.51 
.40 
.40 

.38 

"".'24" 
.15 
.25 








0.49 


4 


1.15 

.84 


"la)" 


.50 
.34 

"""."37" 

.32 
.36 
.35 


"0. 48* 

.49 
.50 
.43 
.44 

.38 
.40 
.35 
.32 
.30 

.35 


.30 
.22 


'"".'51* 


.50 


5 


.42 


6 


.41 


7 


"W 

(a) 
(a) 

(a) 

(a 
(a) 
(a) 
(a) 

(a) 
(a 
(a) 
(a) 
0.71 


.30 


""."24' 

.32 
.53 
.34 
.41 


.42 

.42 
.64 

"".'52" 

.52 
.42 
.42 

.54 


.41 


8. 






.50 


9. 


.31 
.31 

.32 
.54 
.59 
.56 

.44 

.40 
.66 

'"".'49' 

.40 
.35 
.41 








.42 


10 


.49 

.49 
.40 

""."46" 

.45 

.39 

"\*40* 
.41 
.40 

.56 
.55 
.40 






.41 


11 






.38 


12 








.31 

.42 


.37 


13 


.49 


0.28 


.44 


.34 


14 


.40 


15 




.25 


.15 


.40 
.32 


.44 


16 


.39 


17 


.12 


.26 




.36 


18 






.42 


.34 
.30 

.30 

.32 
.34 
.32 
.32 

.19 
.28 

fa) 

(a) 
.49 


.46 
.49 
.60 

""."56" 

.44 

.46 


.55 

""."51" 

.50 
.42 
.49 


.38 


19 


(a) 
(a) 

(a) 
(a) 
(a) 
(a) 


(a) 






.46 


20 








.51 


21 




.22 


.15 


"".SI 

.32 
.32 
.30 

.30 
.41 


.42 


22 




23 


(a) 




.15 

.40 

'.40 
.35 
.30 
.32 




24 




25 




.41 

.39 
.30 
.13 


.49 

.53 
.72 
.94 


(a) 


.35 

.34 
.40 
.32 


.43 

.40 
.40 


.46 


26 








27 


(a) 
(a) 
(a) 
(o) 




.52 


28.... 


.46 


29 






.45 


30 




.36 
.75 








"".'56" 


.48 




31 




(a) 





























a Channel dry. 



ISLAND OF HAWAII. 



263 



Daily discharge, in second-feet, at station No. 29 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.01 
.01 
.01 
.01 
.01 

.01 
.01 
.01 
.01 
.01 

.0 


0.0 


0.0 


0.03 
.02 

.01 
.02 
.01 

.01 
.05 
.15 
.10 
.05 

.05 
.02 
.01 


0.02 
.01 
.01 
.20 
.10 

.05 
.04 
.02 
.01 
.01 

.01 
.01 
.01 
.0 


0.0 


0.01 


0.01 


0.02 
.05 
.15 
.20 
.10 

.05 
.05 
.02 
.01 


0.0 
(a) 


0.1 
.1 
.10 
.02 
.01 


0.02 


2 


.05 


3 












.01 


4 














5 














6 














7 
















8 


















9 














.01 
.15 

.10 
.01 

.01 


.01 


10. 












.00 


11. 




.0 

.02 














12. 
































14 




















15 












.01 
.0 












16 . 




















.01 
.05 
.02 
.03 
.01 




17. 






















18. 




















.0 

.02 

.02 

.10 
.15 
.20 
.05 
.02 

.10 
.25 
.10 
.05 
.02 
.02 


.00 


19. 




.0 
.05 

.08 
.16 
.20 
.10 
.05 

.02 
.02 
.00 
.02 
















.01 


20 










.0 
.1 




.01 
.0 




.01 


21. . 










.01 


22. .. 




.2 
.1 






.02 


23 
















.03 


24. . 










.0 
.01 




.01 
.0 


.25 


25.... 




.01 
.00 
.00 
(o) 
.00 
.04 


.01 

.02 
.03 
.07 
.02 
.01 






.16 


26. . 








.02 


27 














.01 


28 
















29... 








.01 














........ 


.01 




.0 


.01 




31 


.0 






.0 


.01 











a Channel dry. 
Monthly discharge at station No. 29 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



September . 
October . . . 
November. 
December . 



1911. 



January . . 
February. 

March 

April..... 



1912. 



Mean 
discharge 
in second- 
feet. 



(a) 
(a) 

(a) 
(a) 



0.003 
.020 
.010 
.030 



Run-off 
(total in 
acre-feet). 



0.20 
1.40 



Month. 



1912— Continued. 

May 

June 

July 

August 

September 

October 

November 

December 



The year. 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



0.020 
.003 
.006 
.006 
.030 
.040 
.020 
.020 



,02 



1.00 

.20 

.40 

.40 

1.60 

2.20 

1.40 

1.40 



12.40 



a Stream dry most of the time. Mean for month less than 0.01. 

Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
record at camp near station No. 50. 

Discharge measurements at station No. SO at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


• Gage 
height. 


Dis- 
charge. 


Aug. 15 


Feet. 
0.40 
.33 


Sec.-ft. 
0.04 


Nov. 22 


Feet. 
0.22 
.04 


Sec.-ft. 


Sept. 26 


Dec. 12.. 













Note.— Bed of stream of silt, sand, and gravel. Shifting. One channel at all stages. 



264 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, at station No. 30 at 2,700-foot level, nearHilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.38 




0.64 

.42 


0.30 




2 


















3 


0.62 
.60 
.59 

.61 
.62 
.65 
.64 
.60 

.55 
.50 
.49 
.45 
.40 

.35 


"(«)" 

(a) 


0.36 
.31 
.30 


0.58 
.62 
.56 

.66 






0.53 
.45 
.40 

.38 

""."ie" 

.16 
.38 








0.24 


4 


0.80 
.67 


'"6."io" 

"""."p8" 


.54 
.43 

"".*48" 
.42 
.39 
.40 


'"6."60" 

.60 
.62 
.49 

.42 

.40 
.40 
.35 
.35 
.31 

.36 


.34 
.31 

.30 

""."§2" 

""*32" 

.32 
.55 
.35 
.44 


"""."28* 

"""."26" 
.20 
.45 

""."25" 
.25 

" .20 
.20 

.31 


.30 


5 


.12 


6 


.11 


7 


'"(a)" 
(a) 
(a) 

(a) 
(a) 
0.41 
.30 
.25 

.25 
(a) 

(<0 

.45 
.88 


.32 


.12 


8 . 






.25 


9... 


.36 
.39 

.40 
.66 
.69 
.75 

.58 

.50 
.65 

"".hi" 

.45 
.40 
.50 








.14 


10 


.63 

.62 
.59 

.46 
.59 

.52 

"""."52* 
.64 
.56 

.78 
.75 
.59 






.11 


11 . 






.09 


12 . 








.49 
.51 


.06 


13 


.40 


.29 


.49 


.05 


14 


.10 


15 




.24 


.30 


.52 
.34 


.20 


16.... 


.24 


17 


.30 


.31 




.09 


18... 




.53 


.35 

.34 
.32 

.35 
.35 
.34 
.32 

.32 
.32 

(°) 

C«) 

.65 


.49 
.50 
.69 

""";24" 
.24 

.27 


.31 

""."28" 

.28 
.24 
.28 


.10 


19 


(a) 
(a) 

(a) 
(a) 
(a) 
(a) 


.28 






.21 


20 








.30 


21 




.30 


(0) 


"""."32' 
.35 
.35 
.30 

.30 
.45 


.16 


22 




23 


.21 




(a) 
.44 

.45 
.42 
.40 
.45 




24 




25 




.50 

.41 
.37 
.31 
.30 
.56 
1.08 


.71 

.68 
.73 
.66 


.20 
■"""20" 


.40 

.38 
.49 
.39 


.22 

.20 
.20 


.23 


26 








27 


(a) 




.26 


28 


.16 


29 






.19 


30 








"""."§5" 


.26 




31 




.19 





























a Channel dry. 

Daily discharge, in second-feet, at station No. SO at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.04 
.04 
.04 


0.00 


0.00 


0.05 


0.05 
.15 
.15 
.15 
.25 

.10 
.05 


0.0 


0.01 


0.01 


0.01 








2 








3 






















4 






















5 












.01 
.00 












6 








.05 
.10 












7 


.04 
.05 
.05 
.04 
















8 




















9 






.10 
.05 


















10 






.05 

.02 
.02 
.00 




.66 
.01 












11 




.00 
.07 
.08 
.15 
.05 












12 




.00 
.01 
.00 












13 


.04 
.02 
.01 

.01 
.00 
















14 
















15 








.01 
.00 




.01 









16 














17 


















18 
























19 




.00 
.25 

.35 
.65 
.30 
.10 
.05 

.01 






















20 




""."65" 
.00 


.05 

.15 
.15 
.05 
.10 
.15 








.01 
.0 










21 


















22... 






.0 
.01 












23 
















24 
















25 




















26 




















27 




.15 
.05 


















28 
























29 




.01 


.00 
.01 
.40 










.00 

.05 








30 




.05 


"".'66' 


.01 












31 


.00 




.0 


.0 



















ISLAND OF HAWAII. 



265 



Monthly discharge at station No. 30 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



October . . . 
November. 
December. 



January . . 
February. 

March 

April 

May 



1912. 



discharge 

in second 

feet. 



a 0.08 
a. 10 
a. 12 



.02 
.06 
.04 
.07 
.04 



Run-off 

(total in 

acre-feet). 



4.92 
5.95 
7.37 



1.20 
3.60 
2.60 
4.40 
2.20 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 



The year. 



Mean 
discharge 
in second- 
feet. 



0.01 
.01 
.01 
.01 
.02 
.03 
.03 



,03 



Run-off 

(total in 

acre-feet). 



0.40 

.40 

.40 

.40 

1.20 

1.60 

2.00 



20.40 



a Estimated. 

Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
record at camp near station No. 50. 

Discharge measurements at station No. 31 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
0.75 

.58 
.95 


See.-ft. 
3.52 
.81 
6.04 


Nov.22 


Feet. 
0.96 

.76 


Sec.-ft. 
6.45 


Sept. 26. 


Dec. 12.... 


3.08 


Oct. 25 











Note.— Bed of stream of cobbles and bowlders; section near gage rough; probably permanent. One 
channel at all stages. 

Daily gage height, in feet, at station No. 31 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.59 




1.09 
1.01 


1.16 




2 


















3 


0.71 
.70 

.68 

.71 
.72 

.75 
.72 
.70 

.65 
.62 
.60 
.59 
.56 

.55 


"'6.' 22' 

.21 


0.81 
.73 

.70 


0.84 
.92 
1.02 

1.06 






1.22 

1.08 

.97 

.92 

""\"80" 

.77 
.78 


1.72 
1.36 

.77 

""."73" 

.70 
.72 
.70 






1.08 


4 


1.22 
1.09 


' '6.' 48' 
"".'45" 


"L18" 

1.18 
1.69 
1.02 
.90 

.81 
.99 

.84 
.79 
.67 

.82 


.76 
.66 

.62 

"\"60" 

"".'66' 

.67 
.85 

!88 


"i.'ijj" 

""."85" 
.84 
1.19 

"i."28" 

1.16 

.99 

.88 

1.18 


1.12 


5 


.95 


6 


.90 


7 


""."is" 

.11 

.10 

.10 
.10 
.70 
.61 
.41 

.38 
.28 
.10 
.27 
1.16 


.65 


.92 


8 






1.05 


9 


.76 
.80 

.88 
1.21 
1.38 
1.46 
1.09 

.91 
1.11 

""i.20" 

1.08 
.94 
.94 








.99 


10 


1.32 

1.21 
1.10 

"""."91" 
1.04 

.90 

""."95" 
.94 
.91 

1.13 

1.09 

.91 






.88 


11 






.81 


12 








.68 
.74 


.77 


13 


.91 


.60 


.89 


.72 


14 


.75 


15 




.52 


.79 


.90 

.74 


.82 


16 


.97 


17 


.69 


.66 




.82 


18 






.89 


.72 
.69 
.67 

.68 
.76 
.64 
.64 

.58 
.57 
.52 
.54 
1.19 


.92 
.93 
1.25 

'*L25' 
.96 

.90 


1.20 

"i.'io" 
1.00 

.98 
1.01 


.75 


19 


.51 

.48 

.44 
.42 
.41 
.41 


.67 






.92 


20 








1.36 


21 




.61 


.70 


"*.*6i" 

.60 

!65 

.62 
.80 




22 




23 


.6i 




.68 
.96 

.75 
.74 
.75 
.70 




24 




25 




.89 

.78 
.69 
.64 
.61 
.72 
1.71 


1.04 

1.17 
1.04 
1.06 


.59 

"".'58' 


.81 

.74 
.80 
.75 


.88 

.85 
.82 


1.04 


26 








27 


.42 
.41 
.40 
.40 




1.18 


28.... 


.99 


29 






.99 


30 








"i.'ii" 


.89 




31 




.50 





























266 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. SI at 2,700-foot level, near Eilo, Hiawai, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




14.8 
14.8 
16.2 
17.6 
19.0 

15.2 
12.0 
12.0 
12.4 
12.4 

8.9 
9.2 
9.5 
9.8 
10.1 


1.0 
1.0 
1.0 
3.8 

7.4 

8.3 
9.2 
10.4 
12.0 
7.4 

8.6 
9.8 
11.2 
13.1 
15.2 


2.4 
2.3 
2.0 
2.2 
2.4 

2.0 
1.5 
1.8 
2.6 
2.3 

2.9 
2.4 
6.4 
16.6 
41.5 


16 




10.4 
10.4 
6.4 
3.8 
3.5 

3.0 
2.6 
2.6 
2.4 
2.4 

2.3 
1.6 
1.5 
1.3 
1.0 
1.0 


6.4 
7.0 
7.7 
8.6 
9.5 

10.4 
11.6 
13.1 

14.8 
16.6 

7.0 
4.1 
4.0 
3.5 
2.6 


13.5 


2 




17 




33.6 


3 




18 




33.6 


4 




19 




41.5 


5 




20 




25.2 


6 . 




21 




12.4 


7 




22 




7.4 


8 




23 




6.4 


9 




24 




5.3 


10 




25 




26.6 


11 




26 


38.2 
23.2 
21.6 
14.3 
14.3 


19.5 


12 




27 


19.0 


13 . 




28 


17.1 






29 


25.2 


15 




30 


21.6 






31 


19.0 











Daily discharge, in second-feet, at station No. 31 at 

for 1912. 



', 700-foot level, near Hilo, Hawaii, 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


2.40 
2.40 
2.40 
2.30 
2.00 

2.40 
2.60 
3.00 
2.60 
2.30 

1.60 

1.30 

1.00 

.90 

.80 

.70 
.60 
.60 
.50 
.30 

.20 
.20 
.10 
.10 
.10 

.20 
.20 
.10 
.10 
.10 
.10 


0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
2.30 
1.10 
.10 

.10 
.10 
.10 
.10 
12.70 

20.00 
35.00 
55.00 
55.00 
40.00 

15.00 
5.00 
4.00 
8.00 


5.00 
5.00 
4.00 
2.80 
2.30 

2.00 
1.60 
2.00 
3.20 
3.80 

5.00 
14.80 
23.20 
29.30 
10.10 

5.50 
10 80 
15.00 
20.00 
14.30 

9.80 
6.10 
6.10 
5.60 
5.10 

3.50 
2.20 
1.50 
1.10 
2.60 
49.10 


25.00 
12.00 
4.40 
5.70 
8.00 

9.20 
40.00 
55.00 
40.00 
20.00 

14.80 
10.40 
8.00 
5.50 
8.60 

5.30 

10.00 
6.30 
6.10 
5.50 

11.60 
10.10 
5.50 
7.00 
8.60 

13.10 
8.60 
9.20 
5.00 
8.00 


15.00 
20.00 
12.00 
15.20 
12.00 

10.10 
5.00 
5.00 
5.00 
5.00 

5.00 
5.00 
5.50 
4.50 
3.50 

2.50 
2.20 
2.00 
1.90 
2.00 

2.00 
2.00 
1.10 
3.00 
.90 

.90 
.90 
1.00 
1.00 
.50 
.40 


0.40 
.40 
.30 
.30 
.30 

.20 
.20 
.20 
.20 
.30 

'.40 
.50 

1.00 
.80 
.50 

1.10 
1.80 
1.60 
1.40 
1.20 

1.10 
1.80 
2.50 
3.20 
4.00 

2.90 
3.80 
3.00 
2.00 
2.00 


5.00 
10.00 
15.20 
9.80 
6.80 

5.70 
5.00 
3.80 
3.30 
3.50 

20.00 
15.00 
5.00 
8.00 
3.60 

3.00 
3.00 
3.00 
3.00 
3.00 

2.30 
2.20 
2.00 
6.60 
4.80 

3.00 
2.90 
3.00 
2.30 
2.00 
1.50 


0.90 

1.00 

50.00 

22.10 

3.40 

3.00 
2.80 
2.30 
2.60 
2.30 

2.20 
2.00 
2.90 
3.50 
5.30 

2.90 
3.00 
5.10 
8.00 
5.00 

3.00 
1.10 
1.00 
2.20 
1.60 

1.30 
3.80 
5.00 
4.00 
3.00 
3.00 


5.00 
10.00 
20.00 
35.00 
13.50 

13.50 
47.40 
8.00 
5.30 
4.60 

3.90 
7.20 
4.40 
3.60 
1.90 

4.10 
3.00 
2.60 
2.20 
1.90 

2.00 
3.20 
1.50 
1.50 
1.20 

.90 
.80 
.50 
.60 
13.90 


10.10 
7.70 
5.40 
3.20 
1.80 

1.30 
1.20 
1.00 
1.40 
1.80 

1.90 
4.60 
2.20 
5.00 
5.00 

4.00 
20.00 
5.70 
5.90 
16.60 

20.00 
25.00 
40.00 
16.60 
6.60 

5.30 
30.00 
50.00 
40.00 
25.00 
10.80 


12.70 
10.00 
30.00 
15.00 
11.20 

5.00 
4.50 
4.40 
13.90 
40.00 

35.00 
18.10 
12.70 
7.20 
5.00 

13.50 
25.00 
14.30 
20.00 
10.40 

7.40 
7.00 
7.70 
6.30 
5.00 

4.60 
4.10 
15.00 
10.00 
5.20 


15.00 


2 

3 


20.00 
9.80 


4... 


11.20 


5 


6.30 


6 


5.30 


7 


5.70 


8 


8.90 


9 


7.20 


10 


5.00 


11 


3.90 


12 


3.40 


13 


2.60 


14 


3.00 


15 


4.10 


16 ". 


6.80 


17 


4.10 


18 


3.00 


19 


5.70 


20 


22.10 


21.... 


10.00 


22 


20.00 


23 


35.00 


24 


20.00 


25 


8.60 


26 


15.00 


27 


13.50 


28 


7.20 


29 


7.20 


30 


5.00 


31 


5.00 







Note. — Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 



ISLAND OF HAWAII. 267 

Monthly discharge at station No. 31 at 2,100-foot level near, Eilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December ... 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



13. 



Run-off 
(total in 
acre-feet). 



490 
833 



67.60 
506.00 
540.00 
768.00 
302. 00 



Month. 



1912— Continued 

June 

July 

August 

Septembtr 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



1.31 
5.40 
5.14 
7.44 
12.10 
12.70 



7.50 



Run-off 
(total in 
acre-feet). 



78.00 
332.00 
316.00 
443.00 
744. 00 
756.00 
594.00 



5,450.00 



Discharge measurements at station No. 32 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.l 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
0.34 
.33 
.50 


Sec.-ft. 
0.27 
.06 
.94 


Nov. 22 


Feet. 
0.48 
.38 


Sec.-ft. 
1.27 


Sept. 26 


Dec. 12 


.37 


Oct. 25 











Note. — Bed of stream composed of sand and gravel with few small cobbles; shifting. One channel at 
all stages. 

Daily gage height, in feet, at station No. 32 at 2,700-foot level, near Hilo t Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.35 




0.62 
.49 


0.70 




2 


















3 


0.62 
.60 

.58 

.62 
.64 
.68 
.66 
.62 

.65 
.62 
.51 

.50 
.48 

.46 


I" 


6.42 
.40- 
.40 


0.42 
.48 
.54 

.61 






0.60 
.54 
.46 

.42 

""."35' 
.35 
.40 


.60 
.59 
.39 

""."42" 
.38 
.42 
.40 






0.60 


4 


0.85 
.62 


"6." 26* 
""."is" 


*"6."87" 

.80 
.85 
.53 
.48 

.40 
.43 
.40 
.40 
.38 

.40 


.34 
.32 

.32 

""."32" 

"".'32" 

.32 
.54 
.55 
.38 


""."54' 

"*.*39* 
.39 

.67 

""."75* 

.70 
.50 
.40 

.68 


1.00 


5 


.80 


6..... 


.59 


7 


( a ) 
(a) 

0.35 
.27 
(a) 

(a) 

$ 

.31 

.59 


.40 


.50 


8 






.51 


9 '.. 


.41 

.49 

.40 
.61 
.79 
.79 
.63 

.57 
.96 

""."88' 

.71 
.68 
.69 








.49 


10 


.68 

.62 
.54 

"".45" 
.51 

.48 

'""."49" 
.54 
.54 

.64 
.57 
.59 






.42 


11 






.40 


12 








.38 

.40 


.38 


13 


.52 


.35 


.50 


.34 


14 


.35 


15 




.30 


.38 


.44 
.34 


.38 


16 


.45 


17 


.40 


.32 




.44 


18 






.45 


.38 
.38 
.35 

.35 
.42 
.40 
.39 

.32 
.31 
.31 
.32 

.68 


.42 

.50 
.60 

"".*84' 
.50 

.47 


.67 

"'.*58' 

.51 
.48 

.48 


.32 


19 


.40 
.38 

.31 
.31 
.31 
.30 


.40 






.42 


20 








.65 


21 




.30 


.40 


"*."28" 
.24 
.30 
.25 

.22 

.40 


42 


22 




23 


.38 




.40 
.35 

.45 
.42 
.40 
.40 




24 




25 ;. 




.59 

.45 
.40 
.40 
.38 
.62 
1.04 


.62 

.68. 
.65 
.64 


.31 
"""."36" 


.40 

.38 
.51 
.42 


.42 

.41 

.40 


59 


26 








27 


.32 
.31 
.30 
.29 




.57 
.42 


28 


29 






.44 


30 








'".'84" 


.50 




31 




.29 





























a Channel dry. 



268 WATER RESOURCES OF HAWAII, 1912. 

Daily discharge, in second-feet, at station No. 32 at 2,700-foot level, near Hilo, Hawaii 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 

Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




7.4 

8.1 
8.3 

8.5 
8.8 

8.1 
7.2 
7.1 
6.9 
6.7 

6.1 
6.1 
5.9 

5.8 
5.8 


0.5 

.5 

.5 

1.2 

2.2 

2.6 

2.9 
3.3 

3.7 
2.7 

3.0 
3.4 
4.0 
4.5 
5.1 


2.4 
2.2 
1.4 
1.4 
1.7 

1.2 
.9 
1.2 
2.4 
2.2 

2.4 
2.2 
6.1 
10.8 
17.5 


16 




5.6 
5.6 
3.7 
2.2 

1.8 

1.4 
1.1 
1.1 
1.0 
.9 

.8 
.8 
.8 
.6 
.6 
.6 


3.4 
3.8 
4.2 
4.7 
5.1 

5.8 
6.4 
7.1 

7.8 
8.5 

6.1 
4.1 
4.1 
3.5 
2.8 


9 


2 




17 




14.9 


3 




18 




13.7 


4 




19 




16.2 


5 




20 




11.9 


6 




21 




8.5 


7 




22 




5.1 


8 




23 




4.7 


9 




24 




4.1 


10 -.-. 




25 




11.9 


11 




26 


10.3 
7.2 
8.1 
6.4 
6.9 


7.8 


12 




27. 


7 2 


13 




28 


7.1 






29 


10.3 


15 




30 


9 9 






31 


8.1 











Daily discharge, in second-feet, at station No. Si 

for 1912. 



at 2,700-foot level, near Hilo, Hawaii, 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.40 
.40 
.45 
.40 
.35 

.46 
.50 
.65 
.60 

.45 

.55 
.45 
.20 
.20 

.20 

.15 
.15 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


(a) 

w 

(a) 
(a) 

(a) 
(a) 
(a) 

(a) 
(a) 
0.10 
.05 

(a) 

(a) 

(a) 

(a) 
.05 
.40 

4.00 
8.00 
10.00 
6.00 
4.00 

2.00 
2.00 
2.00 
2.00 




1.00 
.80 
.65 
.50 
.50 

.50 
.50 
.50 
.60 
1.15 

.50 
2.30 
4.65 
4.65 
2.55 

1.90 
7.40 
7.00 
6.50 
6.10 

3.55 
3.15 
3.30 
2.70 
2.10 

.85 
.50 
.50 
.40 
2.45 
8.80 


4.00 
2.00 
.65 
1.05 
1.60 

2.30 
8.00 
7.00 
6.00 
3.15 

2.45 
1.60 
1.20 
.85 
1.30 

1.05 
1.10 
1.15 
1.60 
1.60 

2.70 
1.90 
2.10 
2.30 
2.45 

3.15 

2.80 
2.70 
2.00 
2.00 


3.00 
4.00 
3.00 
5.60 
7.00 

2.45 

2.00 
1.50 
1.50 
1.50 

1.50 
1.50 
1.40 
1.20 
1.00 

.80 
.50 
.50 
.50 
.50 

.40 
.40 
.40 
.30 
.15 

.10 
.10 
.10 
.10 
.10 
.10 


' "6."30" 

'"".'io' 

*"."20' 

.10 

'"".'50* 

.40 

1.30 

.65 


0.50 
1.00 
2.20 
1.60 
.90 

.65 
.50 
.30 
.30 
.50 

.40 
.30 
1.20 
.30 
.40 

.40 
.40 
.40 
.50 
.50 

.50 
.50 
.50 
.30 
.60 

.85 
.65 
.50 
.50 
.40 
.30 


0.30 

.30 
2.20 
2.10 

.45 

.50 
.65 
.40 
.65 
.50 

.40 
.40 
.50 
.60 
.80 

.25 
.50 
.85 
.90 
.50 

.30 
.10 
.05 
.10 
.10 

.05 
.50 
.40 
.40 
.30 
.30 


3.00 
4.00 
6.00 
9.00 
5.90 

4.80 
5.60 
1.50 
1.10 
.80 

.50 
.70 
.50 
.50 
.40 

.50 
.40 
.40 
.40 
.30 

.30 
.60 
.50 
.50 
.40 

.20 
.10 
.10 
.20 
3.20 


2.60 

1.10 

.70 

.30 

.20 

.20 
.20 
.20 
.20 
.20 

.20 
1.60 
1.70 

.40 
1.00 

2.00 
4.00 
.60 
1.20 
2.20 

3.00 
5.00 
8.00 
5.40 
1.20 

1.00 
10.00 
8.00 
8.00 
6.00 
5.40 


3.40 
3.00 
6. CO 
3.00 
1.60 

1.00 

.50 

.50 

3.00 

9.00 

8.00 
4.10 
3.40 
1.20 
.50 

3.20 

7.00 
3.00 
4.00 
2.00 

1.30 
1.10 
1.10 
1.00 
.60 

.60 

.50 

2.00 

1.50 

1.20 


5.00 


2 


8.00 


3 


2.20 


4 


8.10 


5 


4.80 


6 


2.10 


7 


1.20 


8 


1.60 


9 


1.10 


10 


.60 


11 


.50 


12 


.40 


13 


.20 


14 


.30 


15 


.40 


16 


.90 


17 


80 


18 


.20 


19 


.60 


20 


2.80 


21 


.60 


22, 


8.00 


23 


9.00 


24 


6.00 


25 


2.10 


26 


3.00 


27 


1.90 


28 


.60 


29 


.80 


30 


.60 


31 


.50 







a Channel dry. 

Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated rom diagram prepared from record of daily 
rainfall at the camp near station No. 50. 



ISLAND OF HAWAII. 269 

Monthly discharge at station No. 32 at 2,700-foot level, near Hilo, Hawaii, for 1911-12 • 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



4.37 
3.92 



.24 
1.40 
2.53 
2.48 
1.39 



Run-off 
(total in 
acre-feet). 



269. 00 
234. 00 
411. 00 



14.80 
86.10 
156. 00 
148. 00 
85.50 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



0.50 
.61 
.53 
1.75 
2.64 
2.61 
2.42 



1.59 



29.80 
37.50 
32.60 
104. 00 
162. 00 
155. 00 
149. 00 



1, 160. 00 



Discharge measurements at station No. 33 at 2,700-foot level, near Hilo, Hawaii, in 1912.. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
0.69 
.52 

.78 


Sec.-ft. 
0.07 
.00 
.19 


Nov. 22 


Feet. 
0.98 
.62 


Sec.-ft. 
0.23 


Sept. 26 


Dec. 12.. 




Oct. 25 











Note. — Bed of stream composed of sand and gravel with few small cobbles; shifting. One channel at 
all stages. 

Daily gage height, in feet, at station No. 33 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.59 




0.84 
.75 


0.84 




2 


















3 


0.81 
.78 
.75 

.82 
.82 
.88 
.85 
.82 

.75 
.72 
.70 
.70 
.62 

.60 


"[a]" 
(a) 


0.73 
.70 
.65 


0.74 
.80 

.82 

.88 






0.89 

.84 
.80 

.78 

'"."75' 
.75 

.67 


.98 

.80 
.70 

"~".n 

.68 
.70 
.72 






0.82 


4 


1.00 
.86 


"6.3T 
■(«)"■ 


"6." 86' 

.78 
.81 
.78 
.80 

.70 
.78 
.76 
.79 
.76 

.71 


.66 
.60 

.55 

'".'56' 

"".GO 

.62 

.84 
.66 
.70 


"""."79" 

"".'67" 
.69 
.98 

""."84" 

.86 
.80 
.72 

.94 


.90 


5 


.80 


6 


.78 


7 


(a) 
(a) 

(a) 
(o) 
0.71 
.60 
(a) 

(a) 

(a) 

(a) 
.75 
.92 


.68 


.74 


8 






.80 


9 .. 


.69 
.69 

.72 
.90 
.97 
1.00 
.83 

.80 
1.02 

"".'89' 

, .80 

.74 
.81 








.78 


10 


.92 

.89 
.80 

""."74" 
.81 

.76 

'".'79' 
.80 
.80 

.91 
.89 

.78 






.71 


11 






.66 


12 








.68 
.72 


.62 


13 


.71 


.43 


.80 


.60 


14 


.65 


15 




.38 


.72 


.76 


.70 


16 


.80 


17 


.60 


.46 




.66 


18 






.80 


.64 
.62 
.65 

.65 
.68 
.62 
.61 

.56 
.49 
.48 
.42 
.90 


.76 
.86 
.90 

""."88" 
.74 

.76 


.90 

""."si" 
.79 

.80 
.80 


.66 


19 


(a) 
(a) 

fa) 

(a) 
(a) 
(a) 


.60 






.79 


20 








1.04 


21 




.40 


.72 


'"."60" 
.59 
.64 
.59 

.55 

.77 


.76 


22 




23 


.53 




.71 

.82 

.70 
.72 
.65 
.68 




24 




25 




.80 

.71 
.68 
.64 
.62 
.78 
1.33 


.86 

.90 
.84 

.80 


.50 
"".'49' 


.70 

.68 
.73 
.69 


.74 

.72 
.70 


.83 


26 








27 


(a) 
}a) 
{a) 
(a) 




.83 


28 


.76 


29 






.74 


30 








'"*!86* 


.75 




31 




.40 





























a Channel dry. 



270 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 33 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.35 
.35 
.38 
.41 
.45 

.43 
.40 
.40 
.40 
.40 

.33 
.33 
.34 
.34 
.35 


(a) 

13 

0.15 
.25 

.28 
.30 
.33 
.35 
.35 

.36 
.37 
.38 
.39 

.40 


0.12 
.11 

.10 
.11 
.12 

.12 
.11 
.12 
.16 
.14 

.16 
.15 
.21 
.52 
1.24 


16 




0.35 
.35 
.22 
.15 
.13 

.12 
.10 
.10 
.10 
.10 

.10 
.05 

(«) 
(a) 

(a) 
(a) 


0.27 

.27 
.27 
.27 
.27 

.27 
.27 
-.27 
.27 
.27 

.18 
.16 
.14 
.13 
.12 


0.43 


2 




17... 




.92 


3 




18 




.84 


4 




19 




1.00 


5 




20 




.48 


6 




21 




.23 


7 




22 




.18 


8 




23 




.16 


9 




24 




.15 


10 




25 




.64 


11 




26 


0.45 
.33 
.35 
.35 
.35 


.40 


12 




27 


.37 


13... 




28 


.35 


14 




29 


.60 


15 




30 


.52 






31 


.45 











a Channel dry. 

Daily discharge, in second-feet, at station No. 33 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



"Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.15 
.15 
.15 
.15 
.10 

.15 
.15 
.20 
.15 
.15 

.10 

.10 
.10 
.10 
.05 

.05 
.05 
.05 
(a) 

(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 
(a) 


(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
0.10 
.05 
(a) 

(a) 

(a) 

(a) 
.10 
.20 

.40 
.60 
.80 
.50 
.20 

.10 
.10 
.10 
.10 


0.10 
.10 
.10 
.10 
.05 

.05 
.05 
.05 
.10 
.10 

.10 
.20 
.25 
.25 
.15 

.15 
.25 
.25 
.20 
.20 

.15 
.10 
.15 
.15 
.15 

.10 
.10 
.05 
.05 
.15 
.65 


0.40 

.20 
.10 
.15 
.15 

.20 
.50 
.40 
.30 
.20 

.20 
.15 
.10 
.10 
.15 

.15 
.15 
.15 
.15 
.15 

.20 
.20 
.15 
.20 
.20 

.20 
.15 
.15 
.10 
.10 


0.10 
.20 
.20 
.25 
.40 

.20 
.20 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.10 
.10 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


'"".'io* 

.10 
.10 
.10 


0.10 
.10 
.20 
.15 
.15 

.15 
.15 
.10 
.10 
.10 

.30 
.20 
.15 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.15 
.10 

.10 
.10 
.05 
.10 
.10 
.10 


0.05 
.17 
.25 
.15 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 

.15 

.10 
.10 
.15 
.10 
.10 

.10 
.05 
.05 
.05 
.05 

.05 
.15 
.10 
.10 
.10 
.10 


0.30 
.40 
.50 
.70 
.20 

.15 
.15 
.15 
.15 
.10 

.10 
.15 
.15 
.15 
.15 

.10 
.05 
.05 
.05 
.05 

.05 
.10 
.05 
.05 
.05 

.05 
.05 
.05 
05 
.20 


0.15 
.10 
.10 

.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.15 
.05 
.10 
.10 

.10 
.30 
.15 
.20 
.20 

.30 
.40 
.50 
.20 
.10 

.15 
.80 
.50 
.40 
.30 
.20 


0.15 
.10 
.30 
.20 

.15 

.10 
.10 
.10 
.25 
.50 

.40 
.15 
.20 
.15 
.10 

.25 
.20 
.20 
.20 
.15 

.15 
.15 
.15 
.10 
.10 

.10 
.10 
.10 
.10 
.10 


0.25 


2 


.40 


3 


.15 


4 


.20 


5 


.15 


6 


.15 


7 


.10 


8 


.15 


9 


.15 


10 


.10 


11 


.10 


12 


.05 


13 


.05 


11 


.05 


15 


.10 


16 


.15 


17 


.10 


18 


.10 


19 


.15 


20. 


.30 


21 


.15 


22 


.50 


23 


.70 


24 


.50 


25 


.15 


26 


.20 


27 


.15 


28 


.10 


29 


.10 


30 


.10 


31 


.10 







a Channel dry. 

Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
near station No. 50. 



ISLAND OF HAWAII. 271 

Monthly discharge at station No. 33 at 2,700-foot level, near Rilo, Hawaii, for 1911-12. 



Month. 



1911. 

October. 

November 

December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.24 
.24 



.07 
.12 
.15 
.19 
.10 



Run-off 
(total in 
acre-feet). 



14.90 
14.60 
22.30 



11.30 
6.15 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second 

feet. 



0.10 
.12 
.10 
.15 
.19 
.17 
.18 



.14 



Run-off 
(total in 
acre-feet). 



5.95 
7.38 
6.15 
8.93 
11.70 
10.10 
11. 10 



99.20 



Discharge measurements at station No. 34 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 



Aug. 16. 
Sept. 26 
Oct. 25. 



Gage 
height. 



Feet. 
0.98 
.89 
1.15 



Dis- 
charge. 



Sec.-ft. 
0.66 
.28 
1.43 



Date. 



Nov. 22. 
Dec. 12. 



height. 



Feet. 
1.29 
1.02 



Dis- 
charge. 



Sec.-ft. 
2.37 
.76 



Note.— Bed of stream composed of gravel and small cobbles. Section is somewhat rough, probably 
permanent. One channel at all stages. 

Daily gage height, in feet, at station No. 34 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.90 




1.27 
1.15 


1.28 




2 


















3 


1.08 
1.02 
1.01 

1.05 
1.05 
1.10 
1.10 
1.08 

.98 
.92 
.90 
.81 

.81 

.81 


"b'.io 

.70 


0.99 
.92 
.90 


1.04 
1.14 
1.17 

1.16 






1.31 
1.22 
1.12 

1.10 

"i'66' 

.96 
.95 


1.32 
1.20 
1.05 

"i'66" 

.94 
1.00 
1.00 






1.26 


4 


1.34 
1.09 


" "6." 66' 

"".*58" 


"i."28" 

1.29 
1.40 
1.18 
1.11 

1.01 

1.16 

1.05 

.99 

.97 

1.05 


.99 
.92 

.89 

""."88" 

'".'96' 

.96 
1.12 
1.00 
1.06 


"i.'25" 

'"i."09" 
1.08 
1.38 

"i."29" 
1.30 
1.20 
1.11 

1.37 


1.29 


5 


1.16 


6 


1.10 


7 


"\*76' 
.70 

.68 

.68 
.70 
.82 
.76 
.65 

.65 
.65 
.62 
.89 
1.16 


.90 


1.11 


8 






1.21 


9 


.99 
1.00 

1.00 

1.28 
1.48 
1.48 
1.18 

1.10 
1.21 

"i.'2i* 

1.13 
1.13 
1.18 








1.14 


10 


1.38 

1.28 

1.18 

"I.62" 

1.24 

1.09 

"i.'i2" 

1.14 
1.11 

1.31 
1.26 
1.16 






1.10 


11 






1.05 


12 








.95 
1.00 


1.02 


13 


1.00 


.70 


1.14 


1.00 


14 


1.01 


15 




.68 


.97 


1.10 
.99 


1.04 


16 


1.17 


17 


.92 


.71 




1.01 


18 






1.11 


.90 

.97 
.95 

.95 

1.04 

.94 

.92 

.90 
.89 
.84 
.85 
1.29 


1.12 
1.18 
1.31 

"i."34" 
1.14 

1.11 


1.32 

"i.29" 

1.28 
1.20 
1.28 


1.00 


19 


.80 
.80 

.80 
.78 
.76 
.75 


.91 






1.18 


20 








1.40 


21 




.70 


.95 


"*."9i" 
.91 
.94 
.91 

.90 
1.03 


1.15 


22 




23 


.88 




.95 
1.04 

1.00 
.99 
.95 
.94 




24 




25 




1.14 

1.01 

.99 

.93 

.89 

1.02 

1.66 


1.28 

1.30 
1.20 
1.16 


.82 

"".'so' 


1.00 

:95 

1.05 

.96 


1.12 

1.11 
1.10 


1.26 


26 








27 


.78 
.76 
.75 

.74 




1.20 


28 


1.14 


29 






1.14 


30 








"i.*35" 


1.18 




31..... 




.71 





























272 



WATER RESOURCES OP HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 34 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




3.84 
3.99 
3.99 
4.14 
4.30 

3.52 
2.75 
2.75 
2.90 
3.06 

2.20 
2.20 
2.20 
2.20 
2.20 


0.30 

.30 

.30 

.55 

1.65 

1.98 
2.31 
2.64 
2.90 
1.65 

1.98 
2.31 
2.75 
3.37 
3.99 


0.64 

.55 
.50 
.52 
.60 

.50 
.35 

.42 
.78 
.64 

.78 

.60 

2.20 

4.74 

16.40 


16 




2.20 

2.20 

1.46 

.96 

.82 

.68 
.55 
.55 
.55 
.52 

.52 
.42 
.40 
.35 
.30 
.30 


1.52 

1.76 
2.09 
2.42 
2.75 

3.22 

3.68 
4.30 
5.18 
6.06 

1.87 
1.52 
1.52 
1.06 

.78 


2.53 


2 




17 




10.90 


3 




18 




10.60 


4 




19.. 




12 30 


5 




20 




7.04 


6 




21 




3.06 


7 




22 




1.52 


8 




23 




1.13 


9 




24. . 




.78 


10 




25 




9.76 


11 




26 




5.40 


12 




27 


6.50 
6.50 
3.52 
3.68 


5.40 


13 




28 


4.30 


14 




29.. 


9.76 


15 




30 


9.20 






31 


7.85 











Daily discharge, in second-feet, at station No. 34 at 

for 1912. 



,700-foot level, near Hilo, Hawaii, 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


0.90 


0.15 


0.80 


5.00 


2.00 


0.15 


0.40 


0.30 


2.00 


2.40 


2.55 


.90 


.15 


.60 


3.00 


2.20 


.15 


.50 


.40 


3.00 


1.30 


7.50 


.90 


.15 


.50 


.75 


2.00 


.10 


2.90 


3.05 


5.00 


1.00 


4.00 


.65 


.15 


.35 


1.25 


3.35 


.10 


1.85 


1.65 


8.00 


.50 


3.00 


.60 


.15 


.30 


1.45 


5.00 


.10 


1.15 


.80 


2.55 


.35 


2.20 


.80 


.15 


.30 


1.40 


.95 


.10 


1.00 


.70 


2.65 


.30 


1.50 


.80 


.15 


.30 


9.00 


.90 


.10 


.80 


.55 


4.30 


.30 


.95 


1.00 


.15 


.30 


8.00 


.80 


.10 


.55 


.40 


1.50 


.30 


.90 


1.00 


.15 


.50 


7.00 


.80 


.10 


.45 


.55 


1.05 


.30 


4.00 


.90 


.15 


.55 


4.00 


.70 


.10 


.40 


.55 


.80 


.30 


9.00 


.50 


.15 


.55 


2.55 


.60 


.15 


8.00 


.50 


.60 


.45 


7.00 


.35 


.15 


2.55 


1.50 


.60 


.15 


4.00 


.40 


1.40 


1.15 


2.65 


.30 


.20 


6.05 


1.10 


.55 


.15 


1.25 


.55 


.80 


.55 


2.75 


.20 


.20 


6.05 


.65 


.40 


.15 


.80 


.60 


.50 


.80 


1.65 


.20 


.10 


1.50 


2.05 


.40 


.15 


.45 


1.00 


.50 


.80 


1.05 


.20 


.10 


1.00 


.95 


.40 


.15 


.40 


.50 


.80 


.60 


3.85 


.20 


.10 


1.75 


1.30 


.35 


.15 


.40 


.60 


.50 


2.50 


6.00 


.20 


.10 


1.75 


1.15 


.30 


.15 


.40 


1.05 


.30 


1.15 


3.05 


.20 


.30 


1.75 


1.25 


.30 


.15 


.40 


1.20 


.50 


1.50 


6.00 


.20 


1.40 


1.75 


1.05 


.30 


.15 


.40 


.50 


.40 


2.90 


2.65 


.20 


6.00 


1.20 


2.90 


.30 


.15 


.40 


.40 


.40 


3.00 


2.55 


.20 


10.00 


1.20 


2.30 


.30 


.20 


.40 


.30 


.75 


6.00 


1.65 


.20 


12.00 


1.50 


1.40 


.30 


.20 


.40 


.30 


.40 


10.00 


2.55 


.20 


8.00 


1.40 


2.00 


.20 


.40 


.75 


.40 


.35 


3.35 


1.80 


.20 


3.00 


1.25 


2.55 


.20 


.55 


.65 


.30 


.30 


1.25 


1.15 


.20 


2.00 


.60 


2.75 


.20 


.40 


.55 


.30 


.30 


1.05 


1.05 


.20 


1.00 


.50 


1.65 


.20 


.80 


.50 


•■90 


.30 


12.00 


1.00 


.20 


1.00 


.40 


1.40 


.20 


.45 


.40 


.70 


.25 


5.00 


1.20 


.20 


1.00 


.30 


1.00 


.20 


.40 


.40 


.50 


.25 


5.00 


1.40 


.15 




.65 


1.20 


.15 


.40 


.40 


.40 


2.65 


4.00 


1.50 


.15 




10.90 




.15 




.30 


.50 




3.50 





Dec. 



1 
2 
3 
4 
5 

6 

7 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 

18 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



4.00 
7.00 
2.30 
2.65 
1.40 

1.00 
1.05 
1.75 
1.25 
1.00 

.80 
.65 
.55 
.60 
.75 

1.45 

.60 

.55 

1.50 

4.30 

1.30 
4.30 
7.50 
5.80 
2.30 

3.00 
1.65 
1.25 
1.25 
1.00 
1.00 



Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 



ISLAND OF HAWAII. 273 

Monthly discharge at station No. 34 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December 

1912, 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



1.90 
2.29 
4.25 



.42 
1.67 
1.58 
2.45 

.82 



Run-off 
(total in 
acre-feet). 



117.00 
137. 00 
262. 00 



25.80 
96.10 
97.20 
146. 00 
50.40 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.22 
1.02 
.67 
1.44 
2.37 
2.94 
2.11 



1.47 



Run-off 
(total in 
acre-feet). 



13.10 
62.70 
41.20 
85.70 
146. 00 
175. 00 
130. 00 



1,070.00 



Discharge measurements at station No. 35 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
0.21 
.35 


Sec.-ft. 


Nov. 22.. 


Feet. 
0.34 
.31 


Sec.-ft. 


Oct. 25 




Dec. 12 













Note. — Bed of stream of sand and silt; shifting. One channel at all stages. 

Daily gage height, in feet, at station No. 35 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




















0.42 
.38 


0.30 




2 






















3 


0.35 
(«) 

(«) 

.36 
.38 
.41 
.40 
.38 

(a) 

00 

(a) 
(a) 
(a) 

(a) 


(a) 


0.-30 
.30 
(a) 


0.32 
.36 
.34 

.36 






0.41 
.39 
.35 

.15 


0.52 
.38 

""."32" 






31 


4 


0.65 
.40 


"(a)" 

"W 


"6." 33" 

.33 
.39 
.36 
.31 

.30 
.35 
.31 
.31 
.25 

.30 


.31 
.30 


""."46' 


.38 


5 


.30 


6 


30 


7 


"W 

(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
0. 31 
.62 


.32 


""*25" 

.30 
.42 
.35 
.36 


.30 
.30 
.55 

""."40" 
.38 
.32 
.25 

.44 


.31 


8.: 






.34 


9... 


.36 
.39 

.31 
.40 
.51 
.51 

.38 

.35 
.49 

....... 

.34 
.30 

.44 










.38 
.35 


31 


10 


.42 

.38 
.39 

"".31 

.38 

.32 

■"."34' 
.32 
.33 

.45 
.37 
.33 






.18 


31 


11 






31 


12 








.15 

.37 


.31 


13 


(a) 


0.28 


.34 


.30 


14 


.32 


15 




.25 




.32 
.30 


.34 


16 


.34 


17 


.15 


(a) 




.31 


18 






.48 


.28 
.30 
.29 

.30 
.30 
.29 
.29 


.38 
.38 
.55 

'""."36' 

.34 

.42 


.49 

*":40" 

.40 
.32 
.38 


32 


19 


(a) 
(a) 

(a) 
(a) 
(a) 
(a) 


.31 






32 


20 




I 


33 


21 




(a) 






.32 


22 




.30 




23 


(a) 








24 




.35 


.25 




25..... 




.45 

.30 
.15 
(a) 

(a) 
.42 
.54 


.34 

.41 
.34 
.32 


(a) 


(a) 

(a) 
.31 
(0) 


.30 

.30 
.30 


36 


26 






.32 

.32 


.16 
.35 


.25 




27 


(a) 
(a) 
(a) 

(a) 




"".36 


28.. 






.33 


29 


.30 










.32 


30 










.40 


"".'46" 


.35 




31 




(a) 




■i 












1 









14694°— wsp 336—14- 



-18 



Channel dry. 



274 



Daily discharge, in second-feet, at station No. 35 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.05 




0.05 


0.05 


0.10 


0.05 


0.05 


(a) 










2 










3. . 


.05 














0.10 
.05 
(a) 

(a) 

(a) 

(a) 
.05 
.05 










4 






.05 


















5 








.10 
.20 














6 


.05 












(a) 






7 




.05 






.05 
(a) 
(a) 






8 














(a) 






9 


















10.. 


.05 




















11 






















12 






.05 
.10 
.10 

.05 




.20 




.05 
.05 
.05 
(a) 












13 
















14 






















15 






















16 






























....... 
















18 














.05 










19 




0.05 
.20 

.40 
.50 
.30 
.10 
.05 


















20 






i 
















21 






| 




(a) 












22 






i 




.05 

(a) 










23 






i 




(a) 










24 






i 












25 






i 






(a) 










26 




.05 


1 














27 






1 






.05 


(a) 

(a) 
(a) 








28 








I 




(a) 








29. . 




.05 














30 




.05 
.10 


.05 


.05 












31 








.05 
















1 















a Channel dry. 
Monthly discharge at station No. 35 at 2,700-foot level, near Silo, Hawaii, for 1911-12. 



Month. 



October . . . 
November. 
December . 



1911. 



January . . 
February. 

March 

April 

May 



1912. 



Mean 
discharge 
in second- 
feet. 



a 0.02 
a. 03 
a. 04 



.01 
.06 
.05 
.05 
.00 



Run-off 
(total in 
acre-feet). 



1.23 
1.79 
2.46 



.40 

3.60 
2.80 
3.00 



Month. 



1912— Continued. 

June 

July 

August , 

September 

October 

November 

December 



The year . 



Mean 
discharge 
in second- 
feet. 



0.050 
.003 
.003 
.003 
.030 
.030 
.040 



03 



Run-off 

(total in 

acre-feet). 



3.00 

.20 

.20 

.20 

1.60 

2.00 

2.40 



23.20 



a Estimated. 

Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
record at camp near station No. 50. 

Discharge measurements at station No. 36 at 2,700-foot level, near Tlilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 

0.58 
.55 
.70 


Sec.-ft. 



Nov.22 


Feet. 
0.69 
.59 


Sec.-ft. 
0.02 


Sept. 26 


Dec. 12 





Oct. 25 


0.02 











Note.— Bed of stream of sand and silt; shifting. One channel at all stages, 



ISLAND OF HAWAII. 



275 



Daily gage height, in feet, at station No. 36 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.54 




0.72 
.70 


0.72 






















3 


0.48 
.45 
.45 

.48 
.50 
.52 
.51 
.50 

.45 
.42 
.40 

.35 

.30 


"W 

(a) 


0.64 
.62 
.61 


0.71 

.73 

. .71 

.72 






0.78 

.74 
.72 

.72 
....... 

.70 
.64 


1.00 
.74 
.62 

""."62" 
.59 
.64 
.65 






0.72 


4 


0.85 
.69 


' "6." 24" 

"'".*2i" 


"6." 75" 

.74 
.79 
.70 
.70 

.67 
.66 
.69 
.65 
.64 

.64 


.65 
.62 

.61 

""'."66" 

"*."6i" 

.62 
.73 
.62 
.62 


"".n 

""."64" 
.63 

.84 

....... 

.70 

.66 
.62 

.72 


.72 


5. 


.67 


6 


.62 


7 


(o) 
(a) 

(a) 

(a) 
(a) 

(a) 

(a) 
(a) 
(a) 
0.48 
.49 


.60 
.61 
.62 

.63 

.74 
.83 

.71 

.69 
.76 

""".'78' 

.70 
.68 
.71 


.62 


g 






.67 


9 








.64 


10 


.81 

.79 
.71 

.74 
.69 

"'.'72" 

.74^ 
.77 

.81 
.78 
.74 






.62 


11 






.61 


12 








.58 
.58 


.60 


13 


.61 


.39 


.72 


.57 




.56 


15 




.35 


.70 


.63 

.60 


.58 


16 


.61 


17 


.54 


.48 




.60 


18. 






.63 


.64 
.62 
.61 

.61 
.64 
.62 
.61 

.55 

.55 
.54 
.52 

.72 


.72 
.77 
.82 

*"*."76" 

.70 

.78 


.74 
....... 

.70 
.70 
.72 


.55 


19 


(a) 
(a) 

(a) 
(a) 
(o) 
(a) 


.54 






.62 


20 








.72 


21 




.39 


.60 


"""."58* 
.56 
.56 
.55 

.54 
-.61 


.62 


22. 




23 


.40 




.56 
.75 

.65 
.59 
.60 
.60 








25 




.69 

.64 
.61 
.61 
.60 
.69 
1.08 


.79 

.76 
.75 
.69 


.35 
"".31 


.68 

.61 
.69 
.61 


.64 

.64 
.62 


.64 


26 








27.... 


(a) 

(«) 

(a) 
(a) 




.66 


28 


.61 


29. . 






.61 


30 








'""."74" 


.68 




31 




.30 





























a Channel dry. 
Monthly discharge at station No. 36 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



October . . . 
November. 
December . 



1911. 



January . . 
February. 

March 

April 

ay 



1912. 



Ma 



Mean 
discharge 
in second- 
feet. 



a 0.03 
a. 04 
a. 25 



.01 
.03 
.33 

.48 
.25 



Run-off 
(total in 
acre-feet). 



1.84 
2.38 
15.70 



1.80 
20.20 
28.60 
15.10 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 



The year . 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



0.10 
.36 
.07 
.03 
.40 
.37 
.31 



.25 



6.00 
22.20 

4.40 
16.00 
24.80 
22.00 
18.80 



180. 00 



a Estimated. 

Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
record at camp near station No. 50. 

Discharge measurements at station No. 37 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
0.34 
.35 
1 .40 


Sec.-ft. 



Nov. 22. 


Feet. 
0.39 
.31 


Sec.-ft. 
0.02 


Sept. 26 


Dec. 12. 





Oct. 25 


o.oi 











Note.— Bed of stream of sand and silt; shifting. One channel at all stages. 



276 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, at station No. 37 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Biltkov, Goorko, BelayefE, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.30 




0.43 
.40 


0.40 




2 


















3 


0.55 
.52 
.51 

.52 
.55 
.61 

.60 
.58 

.56 
.55 
.54 
.52 
.51 

.50 


"(a)" 
(a) 


0.57 
.55 
.53 


0.61 
.62 
.61 

.61 






0.62 
.61 
.59 

.58 

""".'55" 

.54 
.58 


.75 
.46 
.44 

""."39' 

.37 
.40 

' .38 






0.40 


4.. 


0.85 

.79 


"6." 25' 

"(a)" 


"6." 46' 

.40 
.42 
.39 
.38 

.32 
.41 
.31 
.32 
.30 

.40 


.38 

.38 

.38 

'"."38' 

"'."38" 

.38 
.41 
.40 
.42 


"".'39" 

"*."36" 

.37 
.46 

------- 

.41 
.38 
.36 

.46 


.39 


5. .. 


.36 


6 


.35 


7 


(a) 
(a) 

(a) 

(a) 

0.50 
.48 
.45 

.45 
.45 
.44 
.55 
.59 


.55 


.35 


8 






.38 


9 


.56 
.54 

.58 
.61 
.66 
.65 
.59 

.58 
.61 

"".60 

.59 
.55 
.59 








.37 


10 


.62 

.62 
.60 

""."54" 
.60 

.58 

'"."58" 
.60 
.60 

.64 
.62 
.60 






.36 


11 






.34 


12 








.38 

.40 


.34 


13 


.60 


.35 


.40 


.34 


14 


.34 


15 




.30 


.38 


.40 
.37 


.36 


16 


.40 


17 


.50 


.40 




.34 


18 






.41 


.39 
.39 
.39 

.39 
.40 
.38 
.35 

.35 
.35 
.36 
.36 
.45 


.40 
.41 

.50 

"""."42" 

.39 

.40 


.41 

"".'46' 

.40 
.40 
.40 


.34 


19 


.48 
.46 

.45 
.45 
.45 
.45 


.48 






.39 


20 








.42 


21 




.35 


.35 


""."35' 
.34 
.35 
.32 

.30 
.39 


.37 


22 




23 


.45 




.35 
.49 

.40 
.34 
.32 

.44 




24 




25 : 




.58 

.56 
.54 
.51 
.50 
.53 
.70 


.62 

.65 
.63 
.60 


.40 
""."38" 


.55 

.58 
.61 
.55 


.38 

.36 


.32 


26 








27 


.50 

.49 
.45 
.44 




.39 


28 






.34 


29 






.34 


30 








----- 


.40 




31 




.30 





























Daily 



a Channel dry. 

in second-feet, at station No. 37 at 2,700-foot level, near Hilo, Hawaii, 
for 1911 . 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 


(a) 
(«) 
(•) 

0.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.10 


0.05 

.05 
.05 
.05 
.05 

.05 
.05 
.05 
.10 
.05 

.10 
.05 
.10 
.16 
.45 


16 




0.05 

.05 
.05 
.05 

(a) 

(«) 

00 

(«) 

(a) 
(a) 

.05 

(a) 
(a) 
(a) 
(a) 
(a) 


0.05 
.05 
.05 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.05 


0.12 


2 




17 




.34 


3 




18 




.34 


4 




19 




.32 


5 




20 




.12 


6 




21 




.10 


7 




22 




.05 


8 




23 




.05 


9 




24 




.05 


10... 




25 




.25 


11 




26 




.20 


12 




27 


0.10 
.05 
.05 
.05 


.20 


13 




28 


.18 


14 




29 


.24 


15... 




30 


.20 






31 


.18 











a Channel dry. 



ISLAND OP HAWAII. 



277 



Daily discharge, in second-feet, at station No. 37 at 2,700-foot level, near Kilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


























2 


























3 


0.05 
.05 
.05 

.05 
.05 
.10 
.10 
.10 

.10 
.05 

.05 
.05 




0.10 
.05 
.05 


0.10 
.10 
.10 

.10 






0.10 
.10 
.10 

.10 


0.15 










4 


0.25 












5 












6 


.20 














7 




.05 












g 








.05 
.05 
.05 












9 




.io 

.05 

.10 
.10 

.10 

.10 
.10 


















10 


.10 

.10 
.10 

.05 

.10 

""."io" 

.10 
.10 

.10 
.10 
.10 
















11 
















12 




































14 




















































17 


.05 




































19 




.05 
.10 


■"."io" 

.10 
.05 
.10 






































21 




















22 












































24 






















25 






.10 

.05 
.05 
.05 
.05 
.05 
.15 


.10 

.10 
.10 
.10 




0.05 

.10 
.05 














26 


















27 




































29 .. 










































31 

















































Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
near station No. 50. 

Monthly discharge at station No. 37 at 2,700-foot level, near Kilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May. 



Mean 
discharge 
in second- 
feet. 



0.03 
.06 
.14 



.05 
.15 



.10 
.07 



Run-off 
(total in 
acre-feet). 



2.00 
3.48 
8.65 



3.07 
8.63 
4.92 
5.95 
4.30 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



0.03 
.06 
.06 
.07 



.10 



Run-off 
(total in 
acre-feet). 



1.79 

3! 69 
4.17 
4.92 
4.76 
6.15 



55.90 



Discharge measurements at station No. 38 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.J 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
0.87 
.75 
.81 


Sec-ft. 
0.15 
.02 
.12 


Nov. 22... ... . 


Feet. 
0.82 
.75 


Sec-ft. 
0.10 


Sept. 26 


Dec. 12 


.06 


Oct. 25 











Note.— Bed of stream is composed of sand, gravel, and some small cobbles; somewhat rough and prob- 
ably only slightly shifting. One channel at all stages. 1 



278 



Daily gage height, in feet, at station No. 38 at 2, 700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and KuznetsofE, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.75 




0.80 
.81 


0.84 




2 


















3 


0.76 

.74 
.72 

.75 

.75 
j 76 
.74 
.72 

.71 
.70 
.70 

.68 

.68 


(a) 


0.78 
.75 
.71 


0.83 
.85 

.84 

.86 






0.89 
.84 
.82 

.80 

"""."78" 
.77 
.79 


1.15 

.89 
.80 

"~'.W 
.79 
.80 
.80 






0.84 


4 


1.05 

.82 


"6." 52' 
""."56" 


""6." 82' 

.84 
.87 
.82 
.79 

.78 
.82 
.79 
.78 
.76 

.80 


.77 
.75 

.74 

'""."74" 

"".76 

.77 
.80 
.76 
.82 


'"."si" 

""."78" 
.79 
.92 

"""."84" 
.88 

.82 
.80 

.90 


.84 


5 


.81 


6 


.80 


7 


(a) 
(a) 

(a) 
{a) 
0.79 

.66 
.65 
.64 

.78 
.80 


.75 


.80 


8 


::::::::: 


.84 


9 


.80 
.80 

.79 
.89 
.97 

.84 

.80 
1.04 

"i.'os" 

.94 
.89 
.91 








.81 


10 


.98 

.89 

.85 

.88 
.82 






.80 


11 






.78 


12 








.78 
.80 


.75 


13 


.71 


.61 


.80 


.74 




.78 


15 


.71 


.59 
.70 


.79 


.82 
.79 


.79 


16 


.82 




.77 


18 




.82 
.83 
.80 

.95 
.88 
.80 


.73 






.82 


.79 

.77 
.75 

.78 
.79 
.76 
.75 

.71 

.74 
.72 
.72 
.85 


.81 

.81 
.92 

""."86* 
.80 

.78 


.89 

'".'84' 

.80 

.82 
.87 


.78 




.66 
.66 

.65 
.65 
.65 
.64 






.82 


20 










.89 


21 




.68 


.78 


---.---■ 

.75 
.75 

.75 

.74 
.80 


.81 


22 




23 


.70 




.75 

.80 

.81 

.82 
.78 
.80 





25 




.85 

.79 
.76 
.74 
.72 
.93 
1.27 


.88 

.86 
.82 
.81 


.70 
""."68" 


.80 

.80 
.82 
.79 


.80 
.80 


.82 


26 










.66 
.65 
.65 
.64 




.84 


28 






.80 








.80 


30 








'""."86' 


.82 








.59 





























a Channel dry. 

Daily discharge, in second-feet, at station No. 38 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.30 
.30 
.30 
.35 
.35 

.30 
.30 
.30 
.30 
.30 

.26 
.26 
.28 
.28 
.30 


0.05 
.05 
.05 
.10 
.30 

.35 
.40 
.45 
.50 
.30 

.35 
• .40 
.45 
.50 
.55 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.10 
.05 
.25 
1.70 
5.50 


16 




0.30 

.30 
.20 
.12 
.10 

.09 
.09 
.09 
.C9 
.10 

.10 
.05 
.05 
.05 
.05 
.05 


0.30 
.30 
.30 
.30 
.30 

.30 
.30 
.30 
.30 
.30 

.10 

.05 
.05 
.05 
.05 


1.36 






17 




4.40 


3 




18 




4.60 


4 




19 




4.30 


5 




20 




.80 


6 




21. 




.20 


7 




22 




.10 


8 ........ 




23 




.05 


9 




24 




.05 


10 




25 




2.30 


11 




26 




.94 


12 




27 


0.70 
.80 
.30 
.30 


.80 


13 




28 


.87 


14 




29 


2.50 


15 




30 


2.00 






31 


1.50 











ISLAND OF HAWAII. 



279 



Daily discharge, in second-feet, at station No. 38 at 2,700-foot level,,near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.10 
.10 
.10 
.05 
.05 

.10 
.10 
.10 
.05 
.05 

.05 
.05 
.05 
.05 
.04 

.04 
.04 
.03 
.03 
.03 

.02 
.02 
.02 
.02 
.02 

.03 
.03 
.02 
.02 
.02 
.02 


0.01 
.01 
.01 

(a) 

(a) 

(a) 
(a) 
( a ) 

14 

(a) 

n 

.10 
.05 
.05 

.03 
.02 
.02 
.10 
.10 

.30 
1.00 
2.00 
1.00 

.40 

.20 
.30 
.30 
.40 


0.20 
.20 
.10 
.10 
.05 

.05 
.10 
.10 
.10 
.10 

.10 
.30 
.65 
.75 
.20 

.10 
1.10 
1.80 
1.40 
1.15 

.50 
.30 
.35 
.20 
.20 

.10 
.10 
.05 
.05 
.45 
3.20 


1.50 
.50 
.15 
.20 
.20 

.20 
2.00 
1.50 
1.08 

.70 

.30 
.20 
.20 
.10 
.25 

.15 
.50 
.15 
.15 
.10 

.55 
.25 
.10 
.20 
.25 

.20 
.15 
.10 
.10 
.10 


0.30 

.50 

.50 

1.15 

1.50 

.15 
.10 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.10 
.05 
.05 
.05 

.05 
.05 
.05 
.20 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


0.05 

"\"io" 

.10 
.15 
.10 


0.10 
.20 
.30 
.20 
.15 

.10 
.10 
.10 
.10 
.10 

.50 
.30 
.10 
.30 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.15 
.10 
.10 
.10 
.10 


0.10 
.20 

2.00 
.30 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.15 

.10 
.10 
.15 
.40 
.20 

.10 
.05 
.10 
.10 
.10 

.05 
.10 
.30 
.20 
.20 
.20 


0.60 
1.00 
2.00 
3.00 
.15 

.20 
.25 
.15 
.10 
.10 

.10 
.15 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.20 


0.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.10 
.10 

.10 
.10 
.10 
.15 
.15 

.10 
.80 
.10 
.10 
.40 

.40 

1.00 

2.50 

.20 

.10 

.10 
3.50 

l.op 

1.00 
.80 
.20 


0.20 
.10 

1.50 
.40 
.10 

.10 
.10 
.10 
.40 
2.50 

2.00 

• .20 

.25 

.15 

.10 

.30 
1.00 
.30 
.80 
.20 

.10 
.15 
.25 
.20 
.10 

.10 
.15 
.50 
.20 

.15 


1.00 


2 


2.00 


3 


.20 


4 


.20 


5... 


.10 


6.... 


.10 


7 


.10 


8 


.20 


9 


.10 


10 


.10 


11 


.10 


12 


.10 


13 


.05 


14 


.10 


15 


.10 


16 


.15 




.10 


18 


.10 


19 


.15 


20 


.30 


21 


.10 


22 


1.00 


23 


3.00 


24 


2.50 


25 


.15 


26 


.30 


27 


.20 


28 


.10 


29 


.10 


30 

31 


.10 
.10 







a Channel dry. 

Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 38 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December 

1912 

January.. 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.20 
.27 
1.12 



Run-off 
(total in 
acre-feet). 



12. SO 
16.00 
69.10 



3.07 
12.70 
28.30 
23.80 
11.10 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



0.05 
.14 
.20 
.32 
.44 
.42 
.42 



.28 



2.98 
8.61 
12.30 
19.00 
27.10 
25.00 
25.80 



200.00 



Discharge measurements at station No. 39 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage, 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
0.82 
.80 
.99 


Sec.-ft. 
0.20 
.10 
.53 


Nov. 22 


Feet. 
0.99 
.90 


Sec-ft. 
0.83 


Sept. 26 


Dec. 12 


.23 


Oct. 25... 















Note. — Bed of stream is composed of sand, gravel, and some small cobbles; somewhat rough and prob- 
ably shifting. One channel at all stages. 



280 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, at station No. 39 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.78 




0.92 
.93 


1.02 




2 


















3 


0.85 

.82 
.81 

.84 
.86 
.91 
.88 
.85 

.84 
.82 
.81 
.80 
.79 

.78 


"6."65" 
.65 


0.83 
.81 
.80 


0.84 
.88 
.92 

.91 






1.00 
.92 
.90 

.89 

"*"."82" 
.80 
.85 


1.10 
.98 
.83 

".""."84" 
.79 
.82 
.80 






1.00 


4 


1.15 
1.13 


"6.'60" 
"""."55" 


"6." 93' 

.90 
.91 

.87 
.81 

.79 
.89 
.84 
.80 

.77 

.86 


.89 

.85 

.82 

"".'si' 

"""."86" 

.88 
.89 
.90 
.95 


'"i."02" 

"""."96" 

.90 

1.12 

""i."06" 

1.02 

^5 

.90 

1.12 


1.08 


5 


1.00 


6 


.97 


7 


'"'."62" 
.62 
.61 

.61 
.60 

.81 
.78 
.75 

.71 
.70 

.68 
.81 
.90 


.80 


.96 


8 






1.03 


9 


.82 
.84 

.84 
.99 
.99 
1.02 
.93 

.89 
1.01 

""."96" 

.90 
.85 
.89 








1.00 


10 


1.02 

.98 
.96 

"".'88* 
.91 

.89 

"".90 

.89 
.89 

1.01 
.97 
.86 






.94 


11 






.92 


12 








.80 

.83 


.90 


13 


.99 


.98 


.89 


.88 




.89 


15. 




.91 


.82 


.88 
.80 


.92 


16 


1.00 


17 


.95 


.90 




.91 


18 






.89 


.83 

.81 
.80 

.80 
.84 
.82 
.81 

.81 

.79 
.79 
.79 

.92 


.90 

.91 

1.06 

""i."io" 

.98 
.98 


1.09 

"i.'oi" 

1.00 

.99 

1.01 


.90 


19 


.75 

.75 

.74 

.72 
.71 
.71 


.96 






.98 


20 








1.09 


21 




.89 


.82 


.75 

.80 
.75 

.75 
.84 


1.00 


22 




23 


.90 




.80 
.99 

.86 
.85 
.80 
.80 




24 . 




25 




.88 

.84 
.80 
.80 
.79 
.90 
1.50 


.98 

.99 
.99 
.93 


.84 
""\*80" 


.82 

.70 
.80 
.72 


.93 

.92 
.91 


1.02 


26 








27 


.74 
.72 
.72 
.71 




1.02 


28 


.92 


29 






.94 


30 








""."98" 


1.00 




31 




.70 





























Daily discharge, in second-feet, at station No. 39 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




1.00 
1.00 
1.00 
1.00 
1;09 

.88 
.70 
.76 
.88 
1.00 

.52 
.52 
.58 
.64 
.64 


0.10 
.10 
.10 
.25 
.40 

.52 
.64 
.76 
.88 
.46 

.52 
.64 
.76 
.88 
1.00 


0.16 
.10 
.10 
.13 
.22 

.10 
.10 
.13 
.22 
.16 

.25 
.10 

.52 
3.00 
6.08 


16... '.. 




0.70 
.70 
.40 
.25 
.22 

.16 
.10 
.10 
.13 

.13 

.16 
.10 
.10 
.10 
.10 
.10 


0.46 
.52 
.58 
.64 
.70 

.76 

.82 

.88 

1.00 

1.18 

.46 
.37 
.34 
.28 
.22 


1.54 


2 




17 




5.20 


3 




18 




5.30 


4 




19 




4.98 


5 




20 




2.45 


6 ... 




21 




1.00 


7 




22 




.46 


8 




23 




.37 


9 




24 




.16 


10 




25 




4.32 


11 




26 




3.55 


12 




27 


1.45 
1.72 
1.00 
1.00 


3.88 


13 




28 


3.00 


14 




29... 


5.20 


15 




30 


4.65 






31 


4.10 











ISLAND OF HAWAII. 



281 



Daily discharge, in second-feet, at station No. 39 at 2,700-foot level, near Silo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.20 
.20 
.25 
.15 
.15 

.20 
.30 
.45 
.35 
.25 

.20 
.15 
.15 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.05 

.10 
.05 
.05 
.05 
.05 
.05 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.15 
.10 
.10 

.05 
.05 
.05 
.15 
.40 

.80 
2.00 
3.00 
3.00 
1.00 

.20 
.60 
.60 
.90 


0.40 
.50 
.20 
.15 
.10 

.10 
.10 
.15 
.15 
.20 

.20 
.95 
.95 
1.20 
.60 

.35 
1.10 
1.70 
2.00 

.75 

.40 
.25 
.35 
.20 
.35 

.20 
.10 
.10 
.10 
.40 
6.30 


2.00 
.80 
.20 
.35 
.50 

.45 
6.00 
6.00 
4.00 
1.20 

.90 

- .75 

1.00 

.35 

.45 

.35 
.30 
.40 
.35 
.35 

1.10 

.80 
.30 
.40 
.90 

.95 
.95 
.60 
.30 
.70 


1.50 
2.00 
2.00 
2.45 
3.00 

2.25 
1.00 
.30 
.20 
.20 

.10 
.05 
.95 
.60 
.70 

.90 
.70 
.30 
.75 
.50 

.30 
.30 
.40 
.80 
.20 

.20 
.10 
.20 
.40 
.20 
.05 


' 0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.10 
.20 
.90 
.60 
.45 

.40 
.40 
.40 
.40 
.35 

.35 
.30 
.25 
.20 
.15 

.05 
.10 
.05 
.05 
.05 


0.20 
.50 

1.00 
.50 
.40 

.35 
.30 
.15 
.10 
.25 

2.00 
.80 
.35 
.60 
.15 

.10 
.30 
.30 
.10 
.10 

.15 
.15 
.10 
.95 
.30 

.30 
.25 
.10 
.10 
.10 
.10 


0.10 
.10 

1.90 
.90 
.20 

.20 
.20 
.10 
.15 
.10 

.10 
.10 
.20 
.20 
.35 

.10 
.15 
.35 
.60 
.20 

.10 
.10 
.10 
.10 
.10 

.10 
.20 
.60 
.40 
.20 
.30 


1.00 
1.50 
4.00 
6.00 
.60 

.40 
.45 
.30 
.15 
.10 

.10 
.35 
.20 
.10 
.10 

.30 
.10 
.20 
.15 
.10 

.10 
.20 
.15 
.15 
.15 

.15 
.10 
.10 
.10 
.50 


0.50 
.60 
.50 
.35 
.25 

.15 
.10 
.15 
.15 
.30 

.35 
.35 
.40 
.70 
.80 

.20 
2.50 
.40 
.45 
1.55 

1.60 

2.00 
4.50 
1.90 
.90 

.90 
6.00 
4.00 
4.00 
2.00 

.90 


1.20 
.60 
4.00 
3.00 
1.20 

.50 
.40 
.40 
2.10 
5.00 

4.00 
1.55 
1.20 
.70 
.40 

2.10 
4.00 
1.80 
3.50 
1.10 

1.00 
.95 
1.10 
1.00 
.60 

.50 
.45 
1.00 
1.00 
1.00 


2.00 


2 


3.50 


3 


1.00 


4 


1.70 


5 


1.00 


6 


.80 


7 


.75 


8 


1.25 


9 


1.00 


10 


.65 


11 


.50 


12 


.40 


13 


.35 


14 


.35 




.50 


16 


1.00 


17 ; 


.45 


18 


.40 


19.. 


.90 




1.80 


21 


1.00 


22 


2.00 


23 


5.00 


24 


4.00 


25 


1.20 


26 


1.50 


27 


1.20 


28 


.50 


29 


.65 


30 


.20 


31 


.20 







Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 39 at 2,700-foot level, near Eilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December 

1912 

January 

February 

March 

April 

May... 



Mean 
discharge 
in second 

feet. 



0.51 

.57 

1.99 



.14 
.47 



1.12 
.76 



Run-off 
(total in 
acre-feet). 



31.40 
34.30 
122.00 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.21 

.36 

.28 

.60 

1.27 

1.58 

1.22 



.72 



Run-off 
(total hi 
acre-feet). 



12.50 
22.10 
17.20 
35.70 
78.10 
94.00 
75.00 



524.00 



Discharge measurements at station No. 40 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
1.09 
1.05 
1.31 


Sec.-ft. 



Nov.22 


Feet. 
1.26 
1.18 


Sec.-ft. 
0.19 


Sept. 26 


Dec. 12 


.10 


Oct. 25 


0.40 











Note.— Bed of stream of gravel and small cobbles. Probably shifting. One channel at all stages. 



282 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, at station No. 40 at 2,700-foot level, near Kilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















1.09 


""i.38* 


1.22 
1.14 


1.30 




2 


















3 


1.25 
1.18 
1.15 

1.22 
1.25 
1.32 
1.30 
1.25 

1.10 
1.02 
1.00 
.95 

.88 

.85 


"(a)" 
(a) 


1.16 
1.13 
1.12 


1.13 
1.21 
1.22 

1.26 






1.34 
1.29 
1.22 

1.20 

""i.26" 

1.18 
1.12 






1.32 


4..: 


1.79 
1.62 


"(«)" 
""(«)" 


1.28 
1.12 

""i."i3~ 

1.00 
1.12 
1.11 


"i.33" 

1.30 
1.31 
1.25 
1.20 


1.04 


""i.32" 


1.40 


5 


1.28 


6 


1.28 


7 


(a) 
(a) 

n 

(«) 

(a) 
(a) 

(a) 
(a) 
(a) 

00 
(a) 


1.12 




1.21 
1.22 
1.41' 


1.30 


8 






1.30 


9 


1.11 

1.14 

1.11 
1.31 
1.44 
1.51 
1.29 

1.20 
1.44 

"1.38" 

1.34 
1.19 
1.30 








1.30 


10 


1.36 

1.34 
1.22 

""i."i6 _ 

1.26 

1.19 

'T22' 
1.21 
1.21 

1.31 
1.29 
1.25 






1.28 


11 






1.14 
1.19 
1.15 
1.10 
1.09 

1.15 






1.27 


12 








1.10 
1.10 




1.39 
1.36 
1.28 
1.24 

1.30 


1.20 


13 


1.30 


1.20 


1.25 


1.15 




1.14 


15 




1.13 


1.18 


1.11 

1.09 


1.16 


16 


1.13 


17 


1.40 


1.19 




1. 12 


18 






1.21 


1.12 
1.12 
1.11 

1.12 
1.15 
1.10 
1.08 

1.05 
1.00 


1.21 
1.24 
1.35 

"i.36" 

1.20 

1.26 


1.40 

"i.35" 

1.29 
1.28 
1.29 


1.14 


19 


(a) 
(a) 

(a) 
(a) 
(a) 
(a) 


1.40 






1.18 


20 








1.36 


21 




1.18 


1.10 


"i."09* 
1.19 
1.06 
1.04 

1.05 
1.05 


1.24 


22 




23 


1.31 




1.10 
1.20 

1.20 
1.12 
1.12 
1.15 




24 




25 




1.27 

1.18 
1.16 
1.14 
1.12 
1.26 
1.83 


1.28 

1.29 
1.24 
1.25 


1.25 
'Y26" 


1.10 

1.02 
1.18 
1.09 


1.26 

1.24 
1.20 


1.42 


26 








27 


(a) 
(a) 
(a) 
(a) 




1.42 


28 


1.40 


29 










1.34 


30 










1.26 


i'52' 


1.26 




31 




1.10 





























a Channel dry. 

Daily discharge, in second-feet, at station No. 40 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.7 
6 
.6 

.7 
.7 

.5 
.4 
.4 
.4 
.4 

.3 
.3 
.3 

.2 
.2 


(<0 

(a) 
(0) 
0.0 
.1 

.2 
.3 
.4 
.5 
.3 

.3 
.3 
.3 
.3 
.3 


0.1 
.1 
.1 
.1 
.1 

.1 
.1 
.1 
.1 
.1 

.1 
.1 
.3 

.8 
1.8 


16 




0.2 

fa) 

00 

(a) 


0.1 
.1 
.2 
.2 
.3 

.3 

.4 
.5 
.6 

.7 

.4 

.2 
.1 
.1 
.1 


0.2 


2 




17 




1.0 


3 




18 




1.1 


4 




19 




1.0 


5 




20 




1.3 


6. 




21 




.6 


7 




22 




.2 


8 




23 




.1 


9 




24 




.1 


10 




25 




1.2 


11 




26 




.5 


12 




27 


0.7 
1.0 

.7 

.7 


.5 


13 




28 


.4 


14 




29 


.7 


15 




30 


.6 






31 


.5 











a Channel dry. 



ISLAND OP HAWAII. 



283 



Daily discharge, 4n second-feet, at station No. 40 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.20 
.20 
.20 
.10 
.00 

.10 
.20 
.40 
.30 
.20 

.10 
.10 

.10 
.10 
.10 

.10 
(a) 
(a) 

(«) 
(«) 

(a) 
(«) 

l a ) 

(a) 

(a) 

(a) 
(a) 
(a) 
(a) 
(a) 
(a) 


(a) 
(a) 
(a\ 
(a) 
(a) 

(a) 

(a) 
(a) 

(a) 
fa) 

(a) 

(a) 

fa) 
)a) 
(a) 

ii 

0.5 
1.5 
3.5 
• 3.0 
2.0 

1.0 
.5 
.2 
.1 


0.10 
.10 
.10 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.30 
.90 
1.20 
.30 

.10 
.90 
.80 
.70 
.60 

.50 
.10 
.30 
.20 
.20 

.10 
.10 
.05 
.05 
.20 
3.20' 


1.00 
.50 
.10 
.10 
.10 

.20 

2.50 

2.00 

1.50 

50 

.50 
.10 
.10 
.10 
.20 

.10 
.10 
.10 
.10 
.10 

.30 
.30 
.20 
.20 
.30 

.30 
.20 
.20 
.10 
.10 


1.00 
1.50 
2.00 
2.90 
3.30 

1.80 
.80 
.50 
.40 
.30 

.30 
.30 
.30 
.30 
.30 

.30 
.70 
.70 
.70 
.40 

.40 
.40 
.30 
.30 
.20 

.20 
.10 
.10 
.10 
.10 
.10 


"o.'io* 
"*"."i6" 

.10 

"\*i6" 


0.20 
.30 
.50 
.30 
.10 

.10 
.10 
.10 
.10 
.10 

1.50 

1.00 

.20 

.80 

.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.05 
.05 
.05 
.05 


"o.'io" 


0.60 

.60 

2.00 

3.50 

.40 

.30 
.30 
.20 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 

(a) 

(a) 
.20 


0.10 
.10 
.10 
.10 

(a) 

(a) 
(a) 
)a) 
{a) 
(a) 

(a) 

(a) 
.10 

.10 
.10 
.10 
.20 
.50 

.50 

1.50 

3.00 

.30 

.10 

.20 
3.50 
2.00 
2.00 
2.00 
1.30 


0.30 
.30 
.40 
.40 
.40 

.20 
.10 
.10 
.7U 
.70 

.70 
.70 
.50 
.30 
.20 

.30 
1.20 
.70 
.60 
.50 

.30 
.30 
.30 
.20 
.20 

.20 
.10 
.50 
.30 
.20 


1.00 


2 


2.00 


3 


.40 


4 


.70 


5 


.30 


6 


.30 


7 


.30 


8 


.30 


9 


.30 


10 


.30 


11 


.20 


12 


.10 


13 


.05 


14 


.05 


15 


.10 


16. 


.05 


17 


.05 


18 


.05 


19 


.10 


20 


.50 


21 


.20 


22 


2.00 


23 


3.50 


24 


2.50 


25 


.80 


26 


1.00 


27 


.80 


28 


.70 


29 


.40 


30 


.20 


31 


.20 











a Channel dry. 

Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 40 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.26 
.25 
.45 



Run-ofl 
(total in 
acre-feet). 



16.10 
15.10 
28.00 



4.92 
24.20 
22.80 
24.40 
41.80 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.10 
.22 
.10 
.31 
.58 
.40 
.63 



,33 



Run-off 
(total in 
acre-feet). 



5.95 
13.50 

6.15 
18.40 
35.70 
23.80 
38.70 



260.00 



Discharge measurements at station No. 41 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
0.42 
.20 
.90 


Sec.-ft. 
0.62 
.14 
1.25 


Nov. 22 


Feet. 
1.34 
.25 


Sec.-ft. 
2.33 


Sept. 26 


Dec. 12 


.52 


Oct.25 











Note.— Bed of stream of gravel, small cobbles, and some bowlders. The section is rough, but probably 
permanent. One channel at all stages. 



284 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, at station No. 41 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Billkov, Goorko, Belayefi, Selitonott, and KuznetsofE, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug, 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.22 


"i."52* 


0.70 
.59 


1.46 




2 


















3 


0.54 
.52 
.52 

.65 
.72 
.85 
.78 
.72 

.65 
.60 
.55 
.50 
.35 

.25 


(a) 


1.32 
1.22 
1.13 


1.32 
1.36 
1.52 

1.54 






1.59 
1.44 
1.40 

1.35 

'"i."28" 

1.20 

.92 


.72 
.72 
.49 

""."48" 
.40 
.46 
.50 




1.46 


4 


1.80 
1.60 


"6." 59" 

"""58 


"i."3o" 

1.25 
1.24 

.84' 

.78 

.69 
.80 
.59 
.49 
.46 

.64 


.42 
.32 

.30 

""29" 

""34" 

.34 
.79 
.66 
.63 


"i."46" 

"*"."89* 

.92 

1.71 

"T56" 
1.56 
1.12 

.82 

1.69 


1.50 


5 


1.31 


6 


1.23 


7 


"(a)" 
(a) 
(a) 

(a) 
(a) 
0.51 
.45 
.10 

.10 
.15 
.20 
.79 
1.33 


1.05 


1.39 


8 






1.26 


9 


1.18 
1.11 

1.33 
1.74 
1.84 
1.84 
1.52 

1.39 
1.55 

"i."69" 

1.54 
1.34 
1.39 








1.14 


10 


1.94 

1.79 
1.61 

"i.'si" 

1.54 
1.44 

"i'.hi' 

1.51 
1.49 

1.70 
1.61 
1.48 






.74 


11 






.39 


12 








.40 
.56 


.24 


13 


1.02 


.69 


1.31 


.20 




.24 


15 




.61 


1.22 


.80 

.44 


.45 


16 


1.00 


17 


.78 


.80 




.36 


18.. 






.89 


.49 
.40 
.34 

.34 
.46 
.34 
.29 

.19 
.12 
.08 
.05 
.76 


.74 

.82 

1.46 

"i.'49" 
.90 

.87 


1.55 

"L'46" 

1.31 
1.32 
1.39 


.27 


19 


.15 
.08 

-.05 
-.10 

-.25 
-.35 


,78 






.90 


20 








1.56 


21 




.77 


.70 


"""26" 
.20 
.29 
.20 

.12 
.51 


.75 


22 




23 


.71 




.60 
.90 

.59 
.55 
.42 
.42 




24 




25 




1.36 

1.32 
1.22 
1.14 
1.06 
1.15 
2.00 


1.52 

1.60 
1.55 
1.49 


.69 
"".'68* 


1.12 

1.01 
1.29 
1.19 


1.00 

.95 

.88 


1.10 


26 








27 


8 

(a) 
(a) 




1.05 


28 


.46 


29.... 






.60 


30 








"i."58" 


.99 




31.. 




.60 





























a Channel dry. 

Daily discharge, in second-feet, at station No. 41 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1.... 




3.6 
3.6 

4.2 
4.7 
5.3 

4.4 
3.6 
4.0 
4.4 
5.0 

3.0 
3.0 
3.1 
3.2 
3.3 


0.3 
.3 
.3 
.8 

1.0 

1.3 
1.9 
2.6 
3.6 
2.1 

2.5 
3.0 
3.5 
4.4 
5.3 


- 0.8 
.8 
.5 
.5 
.5 

.7 
.6 
.6 
.8 
.8 

.8 

.8 

1.7 

2.8 

16.0 


16 




3.4 
3.6 
2.2 
1.2 
1.0 

.8 

.7 
.7 
.7 
.7 

.8 
.5 
.4 
.4 
.4 
.3 


2.5 
2.8 
3.1 
3.4 
3.9 

4.4 
5.0 
5.6 
6.2 
6.8 

2.5 
1.5 
1.4 
1.0 

.8 


21.8 


2 




17 




24.2 


3 




18 




26.4 


4 




19 


2.2 
1.2 

.9 
1.9 

8.2 
8.2 
9.8 

11.6 
5.9 
7.4 
3.6 
3.6 


25.0 


5 




20 


19.0 


6 




21... 


5.0 


7 




22 


2.8 


8 




23 


2.3 


9 




24 


1.4 


10 




25 


18.0 


11 




26 


11.0 


12 




27... 


10.0 


13 




28 


9.1 


14 




29 


12.0 


15 




30 


12.4 






31 


10.0 











ISLAND OF HAWAII. 



285 



Daily discharge, in second-feet, at station No. 41 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.50 
.50 
.55 
.50 
.50 

.65 
.70 
.85 
.80 
.70 

.65 
.60 
. .55 
.50 
.40 

.35 
.35 
.30 
.30 
.30 

.20 
.15 
.05 
.05 
.05 

.05 
(a) 


(a) 

'"(a)" 

0.50 
.45 
.30 

' .30 
.30 
.30 
.80 

2.40 

5.00 
10.00 
12.00 
6.00 
2.00 

'l.OO 
1.00 
1.00 
1.00 


2.00 
2.50 
2.30 
1.70 
1.30 

1.20 

r.io 

1.30 
1.50 
1.25 

2.40 
7.20 
8.90 
8.90 
3.90 

2.75 
4.30 
4.90 
5.60 
. 6.35 

4.20 
2.45 
2.75 
2.65 
2.55 

2.30 
1.70 
1.40 
1.10 
1.40 
12.00 


5.00 
3.00 
2.30 
2.55 
3.90 

4.20 
12.00 
12.00 
11.00 
11.00 

8.05 
5.15 
4.50 
3.75 
4.20 

3.10 
4.00 
3.75 
3.75 
3.50 

6.50 
5.15 
3.45 
3.70 
3.90 

5.00 
4.30 
3.50 
3.00 
4.00 


4.00 
5.00 
6.00 
8.20 
10.00 

5.00 
4.50 
4.00 
3.50 
3.00 

2.50 
2.00 
1.05 
1.00 
.90 

.85 
.80 
.80 
.80 
.75 

.70 

.70 

6.65 

2.00 

.70 

.70 
.70 
.80 
.70 
.60 
.60 


'"6~6o" 
"""«)" 

'"■'.70 

""."60" 

"".'80' 
.80 

*'i.'3o' 

1.00 
2.15 
1.55 


1.00 
3.00 
4.85 
3.10 
2.80 

2.50 
2.30 
2.10 
1.60 
.90 

7.00 
4.00 
2.25 
2.00 
1.70 

1.60 
1.40 
1.30 
1.10 
.90 

.70 
.70 
.60 
.90 
.70 

.60 
.55 
.40 
.40 
.30 
.20 


0.30 

.50 
.70 
.70 
.50 

.50 
.50 
.10 
.45 
.50 

.50 
.40 
.55 
.60 
.80 

.40 
.50 
.90 
2.00 
.50 

.40 
- .30 
.30 
.30 
.30 

.30 
.50 
.40 
.30 
.30 
.40 


2.00 
3.90 
7.00 
12.00 
2.20 

1.90 
1.85 

.85 
.80 
.80 

.70 

.80 
.60 
.50 
.45 

.65 
.50 
.50 
.40 
.40 

.40 
.45 
.40 
.30 
.30 

.30 
.30 
.30 
.25 

.80 


0.70 
.60 
.50 
.40 
.40 

.40 
.40 
.40 
.40 
.40 

.40 
.80 
.70 
.60 
.50 

.70 

1.50 

.75 

.80 

3.30 

3.50 

5.00 

10.00 

3.50 

.90 

.90 

12.00 

10.00 

8.00 

6.00 

4.70 


3.30 
4.00 
5.50 
4.00 
3.30 

1.20 

.90 

.90 

6.65 

10.00 

7.00 
3.60 
4.45 
1.30 
.80 

6.35 

10.00 
4.30 
6.00 
2. '80 

2.25 
2.30 
2.75 
2.00 
1.00 

.90 

.90 

1.50 

1.20 

1.00 


8.00 


2 


10.00 


3 


3.30 


4 


3.60 


5 


2.25 


6 . 


1.80 


7 


2.75 


8 


1.95 


9 


1.35 


10 


.70 


11 


.40 


12 


.30 


13 

14 


.30 
.30 




.45 


16 


1.00 


17 


.40 


18 


.30 


19 


.90 


20 


4.45 


21 


.70 


22 


5.00 


23 


10.00 


24 


6.00 


25 


1.20 


26 


2.00 


27 


1.10 


28 


.45 


29 




.60 


30 




.50 


31 


(a) 




.50 







a Channel dry. 

Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 41 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 
September (19-29) 

October 

November 

December 

1912. 

January 

February 

March 

April 



Mean 
discharge 
in second- 
feet. 



5.38 
2.46 
2.79 
7.71 



.36 
1.53 
3.41 
5.11 



Run-off 

(total in 

acre-feet). 



151. 00 
167.00 
475. 00 



22.10 

88.00 

210.00 

304. 00 



Month. 



1912— Continued 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



2.56 
1.00 
1.72 
.52 
1.42 
2.55 
3.40 
2.34 



2.16 



Run-off 
(total in 
acre-feet). 



157. 00 
59.50 
106. 00 
32.00 
84.50 
157. 00 
202. 00 
144.00 



1, 570. 00 



Discharge measurements at station No. 42 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage, 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
0.69 
.75 

.75 


Sec.-ft. 



Nov. 22 


Feet. 
0.76 
.70 


Sec.-ft. 
0.04 


Sept. 26.. 




Dec. 12 





Oct. 25.. 


0.04 











Note.— Bed of stream of silt, sand, and gravel; shifting. One channel at all stages. 



286 



WATER RESOURCES OP HAWAII, 1912. 



Daily gage height, in feet, at station No. 42 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.40 


""6*85" 


0.76 

.76 


0.79 




2 


















3 


0.65 

(o) 

(a) 

0.66. 
.68 
.71 
.70 
.65 

(a) 
(a) 
(a) 

(a) 

(a) 


(a) 


0.69 
.62 
.60 


0.72 

.78 
.78 

.81 






0.80 
.80 
.75 

.75 

"".'72" 
.70 
.76 


.94 
.80 
.70 

.69 

.72 
.74 




0.79 


4 


1.06 
.80 


"6." 46" 

"""."38" 


"""."80" 

.80 
.88 

*84 

.72 
.72 
.70 
.70 
.69 

.71 


.70 
.69 

.66 

""."66" 

'".*69" 

.68 
.78 
.70 

.74 


""."77" 

"'."to" 

.71 

.84 

"""."82" 
.81 
.74 
.70 

.85 


.80 


5 


.72 


6 


.72 


7. . 


"■(•)"■ 

(a) 
(a) 

(») 

(a) 

0.60 
.55 

.55 
(a) 
(a) 
0.62 

.70 


.60 


.72 


g 






.74 


9 


.66 
.66 

.69 
.81 
.91 

. ,77 

.71 
.94 

""."9i" 

.89 

.78 
.78 








.74 


10 


.84 

.78 
.79 

.80 

.72 

"".'76' 
.80 

.81 

.86 
.79 
.76 






.72 


11 






.71 


12 








.70 

.72 


.70 


13 


.76 


.51 


.74 


.69 




.70 


15 




.46 


.71 


.73 
.70 


.72 


16 


.73 


17 


.68 


.50 




.71 


18 






.74 


.70 

.68 
.68 

.69 
.70 
.68 
.65 

.63 
.60 
.60 
.60 
.76 


.73 
.76 
.81 

"""."87" 

.74 

.80 


.82 

""."to" 

.77 
.75 

.75 


.72 


19 


(•) 

(a) 

(a) 
(a) 
(a) 
(a) 


.64 






.72 


20 








.77 


21 




.42 


.70 


""."67" 

.70 
.70 
.70 

.68 
.72 


.71 


22 




23 


.60 




.69 

.74 

.70 
.70 
.66 
.70 




24 




25 




.70 

.71 
.68 
.62 
.61 
.85 
1.39 


.83 

.55 
.80 
.79 


.58 
""."55" 


.74 

.70 

.77 
.71 


.72 

.73 

.72 


.76 


26 








27... 


(a) 
(a) 
(a) 
(a) 




.72 


28 


.70 


29 






.72 


30 








""".85* 


.72 








.50 





























a Channel dry. 

Daily discharge, in second-feet, at station No. 42 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.05 


(a) 
(a) 
(a) 
(a) 
0.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 


(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(0) 
(0) 

0.01 

.01 

01 
.01 
.05 
.18 
.70 


16 




0.05 
.10 
.05 
.03 
.01 

.01 

n 

(a) 
(a) 

(a) 
(a) 

\i 

(a) 
(a) 


0.05 
.05 
.05 

.10 

.10 

.10 
.10 
.10 
.10 
.12 

.05 
.05 
.05 
.03 
.01 


0.20 


2 




17 




.60 


3 




18... 




.75 


4 




19 |... 


.65 


5 




20.... 


.20 


6 




21 




.10 


7 




22 




.05 


8 




23 




.05 


9 




24 




.05 


10 




25 




.40 


11 




26 




.15 


12 




27 


0.10 
.15 
.10 
.10 


.15 


13 




28 


.12 


14 




29 


.30 


15 




30 


■s 






31 











a Channel dry. 



ISLAND OF HAW AIL 



287 



Daily discharge, in second-feet, at station No. 42 at 2,700-foot level, near Rilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 






0.05 
.05 
.05 

.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.10 
.20 
.25 
.10 

.05 
.30 
.30 
.20 
.20 

.20 
.10 
.10 
.10 
.05 

.05 
.05 
.05 
.10 
.15 
1.35 


0.30 
.10 
.05 
.10 
.10 

.10 
.50 
.40 
.30 
.15 

.10 
.10 
.10 
.05 
.10 

.05 
.10 
.10 
.10 
.10 

.15 
.10 
.10 
.10 
.15 

.10 
.10 
.10 
.10 






0.05 
.05 
.10 
.10 
.05 

.05 
.05 
.05 
.05 

.10 

.10 
.05 
.05 

.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


0.05 
.05 
.30 
.10 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.10 
.05 
.10 
.10 
.10 
.10 


0.10 
.15 
.50 
.70 
.10 

.10 
.20 
.20 
.15 
.10 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 

.05 

.05 
.05 
.05 
.05 
.10 


0.10 
.10 
.10 
.05 
.10 

.10 
. .10 
.10 
.10 
.10 

.10 
.10 
.05 
.05 
.05 

.10 
.10 
.05 
.10 
.10 

.15 
.30 
.60 

.15 
.05 

.10 
1.40 
1.00 
.50 
.20 
.15 


0.10 
.20 
.50 
.20 
.10 

.10 
.05 
.05 
.15 
.10 

.10 
.10 
.10 
.05 
.05 

.15 
.10 
.10 
.10 
.10 

.10 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 


0.30 


2 










.70 


3 


0.05 








.10 


4 


0.55 




.10 








.05 


6 


.05 
.05 
.05 
.05 

.05 




.10 




.05 




.05 


g 






.05 


9 






.05 


10 






.05 


11 






.05 


12 










.05 


fSi 






.10 




.05 


14 






.05 












.05 












.05 


17 






.05 




.05 








.05 


19 . 










.05 












.10 










.05 


22 










.50 


23 










1.00 


24 










.50 


25 








0.05 

.05 
.10 
.05 


.10 


26 






.10 


27 






.05 


2^ 






.05 


29 






.05 


30 






.10 






.05 


31 










.05 








1 









Note.— Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp 



near station No. 50. 



Monthly discharge at station No. 42 at 2,700-foot level, near Hilo, Hawaii, for 1911-li. 



Month. 


Mean 
discharge 
in second- 
feet. 


Run-ofi 
(total in 
acre-feet). 


Month. 


Mean 
discharge 
in second- 
feet. 


Run-off 
(total in 
acre-feet). 


1911. 


0.05 
.05 
.16 


3.18 
3.20 
10.00 


1912— Continued. 
June 


0.03 
.06 
.07 
.11 

' .20 
.10 
.15 


1.79 


November 


Julv 


3.69 


December 


August 


4.30 






6.55 
12.30 


1912. 


.02 
.05 
.15 
.14 


1.23 
2.88 
9.22 
8.33 
4.30 




Januarv 


November 


5.95 




December 


9.22 




The vear 




April 


.10 


69.80 


May 


.07 







Discharge measurements at station No. 43 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage. 

height. 


Dis- 
charge. 


Aug. 16 


Feet. 
0.10 
.05 
.30 


Sec.-ft. 
0.05 

.10 


Nov. 22 


Feet. 
0.25 
.09 


Sec.-ft. 
0.21 


Sept. 26 

Oct. 25 


Dec. 12 


.06 











Note, — Bed of stream of silt, sand, and gravel; shifting. One channel at all stages. 



288 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, at station No. 43 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and KuznetsofE, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.04 


' '6." 46" 


0.28 

.24 


0.30 




2 


















3 


0.25 

.21 
.21 

.32 
.32 
.35 
.32 
.30 

.28 
.25 
.24 
.22 
.21 

.20 


' "6." 64' 

.02 


0.14 
.10 
.09 


0.16 
.20 
.22 

.29 






0.38 
.24 
.20 

.11 

'".'io' 

.01 
.10 


.45 
.35 
.15 

....... 

.10 
.15 
.16 




0.36 


4 


0.50 

.25 


"".'66' 

' + .'16" 


"".'35" 

.30 
.45 
.37 
.24 

.12 
.28 
.20 
.20 
.10 

.23 


.13 
.10 

.08 

"".'66' 

"".'io' 

.10 

.26 
.14 
.22 


'".'36' 

"*.*23" 

.26 

-.50 

....„ . 

.41 
.36 
.29 

.58 


.30 


5 


.20 


6 


.14 


7 


'".'62' 
.02 
.01 

.01 
.02 
.21 
.17 
.10 

.08 
.05 
.02 
.25 
.33 


.10 


.18 


8 






.26 


9 


.14 
.14 

.15 
.30 
.35 
.34 
.21 

.13 

.37 

"".'25* 

.25 
.16 
.16 








.22 


10 


.34 

.28 
.21 

'"."is" 

.21 

.18 

""."2T 
.22 
.24 

.33 
.28 
.21 






.17 


11 






.12 


12 








.11 

.18 


.10 


13 


.21 


.21 


.19 


.05 


14 


.12 


15 




.05 


.01 


.19 
.10 


.14 


16 


.25 


17 


.13 


.10 




.11 


18 






.23 


.18 
.14 
1 11 

.13 
.15 
.11 
.03 

.05 
.04 
.02 
.05 
.28 


.19 
.38 
.60 

"".'39' 
.27 

.38 


.44 

'".'37' 

.38 
.31 
.39 


.12 


19 


.10 
.09 

.08 
.06 
.06 
.06 


.18 






• IS 


20 








.42 


21 




.05 


.10 


"".'62" 
.05 
.08 
.02 

.02 
.13 


.24 


22 




23 


.10 




.10 
.19 

.15 
.12 
.10 
.12 




24 




25 




.16 

.15 
.11 
.09 
.06 
.14 
.41 


.31 

.26 
.29 
.28 


.00 
+ .05 


.19 

.12 
.20 
.11 


.20 

.20 
.19 


.27 


26 








27 


.11 
.10 
.08 
.06 




.30 


28 


.20 


29 . 






.22 


30 








"".'46' 


.28 




31 




+ .15 































Monthly discharge at station No. 43 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



October... 
November. 
December . 



1911. 



1912. 



January . . 
February. 

March 

April 



Mean 
discharge 
in second- 
feet. 



a 0.20 
a. 20 
a. 40 



Run-off 
(total in 
acre-feet). 



12.30 
11.90 
24.60 



3.20 
2.00 
4.40 
7.30 
3.60 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 



The year . 



Mean 
discharge 
in second 

feet. 



0.01 
.05 
.04 
.13 
.23 
.23 
.26 



11 



Run-off 
(total in 
acre-feet). 



0.60 
3.20 
2.60 
7.70 
13.90 
13.50 
16.10 



78.10 



a Estimated. 

Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
record at camp near station No. 50. 

Discharge measurements at station No. 44 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
0.51 
.52 
.55 


Sec.-ft. 



Nov. 22. . 


• 


Feet. 
0.55 
.11 


Sec.-ft. 
0.05 


Sept. 26 . 


Dec. 12 





Oct. 28 


0.05 











Note.— Bed of stream of silt, sand, and gravel; shifting. One channel at all stages. 



ISLAND OF HAWAII. 



289 



Daily gage height, in feet, at station No. 44 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.52 


*"6."56* 


0.55 
.54 


0.55 




2 


















3 


0.45 
.42 

.42 

.46 
.48 
.51 
.50 

.48 

.45 
.48 
.45 
.44 


"b'.'il 
.41 


0.50 
.50 
.50 


0.52 
.53 
.56 

.55 






0.58 
.55 
.54 

.52 

'""."52" 
.52 

.54 


.62 
.58 
.52 

"*\*54' 
.52 
.52 
.54 




0.22 


4 


0.75 
.61 


""6"39" 
'"."31* 


""."55" 

.54 
.58 
.53 
.52 

.52 
.54 
.52 
.52 
.51 

.53 


.54 
.52 

.52 

""."52* 

"\*54" 

.52 
.55 
.55 
.55 


""."55' 

""."55* 
.55 

.58 

""."55" 
.55 
.55 
.55 

.56 


.34 


5 


.12 


6. 


.12 


7 


"""46" 
.40 

.38 

.38 
.40 

.48 
.40 

.39 
.38 
.41 
.45 


.50 


.35 


g 






.42 


9 


.50 
.50 

.50 
.57 
.60 
.60 

.59 

"".'58* 

.54 
.51 
.56 








.40 


10 ... 


.59 

.54 
.55 

""."55" 

.54 

.55 
.55 

.57 
.56 
.55 






.31 


11 






.16 


12 








.52 
.53 


.08 


13 


.59 


.48 


.54 


.08 


14 


.40 










.53 


.42 




.45 


17 


.55 


.46 




.31 








.53 


.53 
.55 
.52 

.52 
.54 
.52 
.52 

.53 
.54 
.54 
.54 
.55 


.55 
.55 
.59 

""."57* 
.55 

.58 


.58 

"""."55' 

.56 
.56 
.56 


.39 


19 


.44 
.42 

.42 
.42 
.42 
.42 


.56 






.43 










.43 


21 




.40 


.52 


"".'54* 
.52 
.54 
.52 

.54 
.52 


.42 


22 




23 


.51 




.52 
.55 

.55 
.55 
.52 

.52 




24 




25 




.54 

.54 
.52 
.52 
.51 
.55 
.62 


.56 

.58 
.56 
.52 


.51 
""."56" 


.55 

.54 
.55 
.54 


.55 

.55 
.55 


.42 


26 








27 


.45 
.44 
.42 
.41 




.42 




.25 


29 . 






.23 










""."58" 


.55 




31... 




.43 





























Monthly discharge at station No. 44 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



October . . . 
November. 
December. 



1911. 



January . . 
February. 

March 

April 

May 



1912. 



Mean 
discharge 
in second- 
feet. 



a 0.03 
a. 03 
a. 05 



.01 
.03 
.05 
.06 
.07 



Run-off 
(total in 
acre-feet). 



1.84 
1.78 
3.08 



.60 
2.00 
3.00 
3.60 
4.00 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 



The year . 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



0.02 
.02 
.03 
.04 
.06 
.05 
.05 



.04 



1.00 
1.40 
1.60 
2.60 
5.00 
3.00 
3.00 



30.80 



a Estimated. 

Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rain- 
fall record at camp near station No. 50. 

Daily gage height, in feet, at station No. 45 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[E. O. Christiansen, hydrographer.] 





Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
0.79 

"78 


Sec.-ft. 

0.05 

.00 

.14 


Nov. 22 . .. 


Feet. 
0.80 

.74 


Sec.-ft. 
0.18 


Sept. 26 


Dec. 12 


.06 


Oct. 25 











Note.— Bed of stream of sand, gravel and some small cobbles in bed rock. Station probably permanent. 
One channel at all stages. 



14694°— wsp 336—14- 



-19 



290 



WATER RESOURCES OP HAW An, 1912. 



Discharge measurements at station No. 45 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.74 


" "6." 90* 


0.84 

.82 


0.87 




2 


















3 


0.75 
.72 

.71 

.74 
.75 

.81 
.82 
.80 

.75 
.71 
.70 
.68 
.62 

.58 




0.75 
.73 

.71 


0.79 
.81 

.81 

.84 






0.86 
.84 

.82 

.80 

""."so" 

.79 

.78 


1.20 
.85 
.80 

""."80" 
.79 
.81 
.80 




0.84 


4 


1.08 
.99 


"6." 48* 
""."44* 


*"."88* 

.88 
.92 
.80 
.79 

.80 
.84 
.80 
.79 
.79 

.84 


.74 
.72 

.72 

"Viz 
""."72" 

.72 

.79 
.75 

.82 


"".'si' 

"".'76" 
.75 
.94 

""."85" 

.84 
.80 
.75 

.94 


.85 


5 


.80 


6 


.78 


7 




.65 


.79 


8 






.86 


9 


""6*78' 
.73 
.70 

.68 
.65 
.61 
.80 
.89 


.71 
.71 

.78 
.86 
.96 
.99 
.81 

.78 
.93 

"".*9i" 

.81 

.77 
.88 








.81 


10 . 


.88 

.88 
.84 

""."81* 

.82 

.82 

""."82* 
.82 
.81 

.89 
.85 
.81 






.78 


11 






.76 


12 








.79 

.82 


.74 


13 


.81 


.58 


.81 


.73 


14 


.74 


15.. 




.49 


.79 


.82 
.79 


.76 


16... 


.81 


17. 


.75 


.60 




.74 


18. . . 






.86 


.79 

.77 
.76 

.79 
.79 
.76 
.74 

.70 
.68 
.66 
.66 

.87 


.79 
.83 
.92 

*".*9i" 

.79 

.80 


.85 

'"."si" 

.82 
.82 
.84 


.75 


19 




.74 






.80 


20 










.94 


21 






.58 


.76 


""."75" 

.75 
.76 
.75 

.74 
.81 


.81 


22 








23 






.70 




.75 
.81 

.84 
.81 
.80 
.80 




24 








25 






.78 

.76 
.74 
.71 
.70 
.86 

114 


.84 

.82 
.81 
.79 


.63 
""."61" 


.80 

.79 
.80 
.79 


.81 

.75 

.78 


.81 


26 








27 






.81 


28 






.78 


29 










.80 


30... 












""."92* 


.79 




31 








.58 





























Daily discharge, in second-feet, at station No. 45 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct, 


Nov. 


Dec. 


1 




0.4 
.4 
.4 
.4 
.4 

.4 
.3 
.3 
.4 
.4 

.2 
.3 
.3 
.3 
.4 


0.1 
.1 
.1 
.1 
.2 

.2 
.3 
.3 
.4 
.2 

.2 
.3 
.3 
.4 
.5 


0.1 
.1 
.1 

.1 
.1 

.1 
.1 
.1 
.1 
.1 

.1 
.1 
.3 
.6 
1.4 


16 




0.4 
.4 
.2 
.1 
.1 

.1 
.1 
.1 
.1 
.1 

.1 
.1 
.1 
.1 
.1 
.1 


0.3 
.3 
.3 
.3 
.4 

.4 

.4 
.4 

.5 

.5 

.2 
.1 
.1 
.1 
.1 


0.2 


2 




17 




1.0 


3 




18 




1.4 


4 




19 


0.2 
.1 

.1 
.2 
.5 
.5 
.6 

.7 
.5 
.5 
.4 
.4 


1.2 


5 




20 


.7 


6 




21 


.2 


7 




22 


.1 


8 




23 


.1 


9 




24 


.1 


10 




25 


1.0 


11 




26 


.7 


12 




27 


.8 


13 




28 


.6 


14 




29 


1.0 


15 




30 


.8 






31 


.6 











ISLAND OF HAWAII. 



291 



Daily discharge, in second-feet, at station No. 45 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.10 
.10 
.10 
.05 
.05 

.10 
.10 
.20 
.30 
.20 

.10 
.05 
.02 
.01 
.01 

.01 
(a) 


(a) 

"W 

0.20 
.10 
.05 

.02 
.01 
.01 
.20 
.50 

1.00 
1.50 
1.80 
1.20 
.80 

.40 
.50 
.50 
.60 


0.30 
.30 
.10 
.10 
.05 

.05 
.05 
.10 
.10 
.15 

.20 
.40 
.70 
.80 
.20 

.20 
.60 
.90 
.70 
.50 

.20 
.10 
.40 
.30 
.20 

.10 
.10 
.05 
.05 
.40 
1.50 


1.00 
.60 
.20 
.20 

. 20 

.30 

1.50 

1.20 

.90 

.40 

.40 
.30 
.30 
.20 
.30 

.30 
.50 
.30 
.30 
.20 

.50 
.40 
.20 
.30 
.30 

.30 
.20 
.20 
.10 
.20 


0.90 
1.10 
1.00 
1.20 
1.50 

.80 
.20 
.20 
.20 
.20 

.20 
.20 
.20 
.20 
.20 

.20 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.50 
.02 

.01 
.01 
.01 
.04 
.02 
.02 


""6.20' 

.20 
.20 
.20 


0.10 
.30 
.40 
.30 
.30 

.20 
.20 
.20 
.20 
.20 

.80 
.40 
.20 
.40 
.20 

.10 
.20 
.20 
.10 
.10 

.10 
.10 
.10 
.20 
.30 

.30 
.20 
.20 
.20 
.20 
.10 


0.10 
.10 

1.80 
.40 
.20 

.20 
.20 
.20 
.20 
.20 

.20 
.20 
.30 
.30 
.30 

.20 
.30 
.40 
.50 
.20 

.10 
.10 
.10 
.10 
.10 

.10 
.20 
.30 
.20 
.20 
.10 


0.30 
.50 
.90 

1.50 
.40 

.40 
.60 
.20 
.20 
.20 

.20 
.30 
.20- 
.20 
.20 

.30 
.20 
.20 
.10 
.10 

.20 
.20 
.10 
.10 
.05 

.02 
.02 
.02 
.02 
.40 


0.30 
.30 
.20 
.10 
.10 

.05 
.05 
.05 
.10 
.10 

.10 
.20 
.10 
.30 
.30 

.10 
.80 
.20 
.30 
.60 

.70 
.90 
1.30 
.50 
.20 

.20 

1.80 

1.00 

1.00 

.80 

.60 


0.40 
.20 
.80 
.30 
.20 

.10 
.10 
.10 
.60 
1.50 

.90 
.40 
.30 
.20 
.10 

.60 
1.00 
.40 
.80 
.20 

.30 
.30 
.30 
.30 
.20 

.10 
.20 
.50 
.30 
.20 


0.50 


2 


.90 


3 


.30 


4 


.40 


5 


.20 


6 .-.. 

7 


.20 
.20 


8 


.40 


9 


.20 


10 


.20 


11 


.10 


12 


.10 


13 


.10 


14 


.10 




.10 




.20 


17 


.10 


18 


.10 


19 


(a) 


.20 




.60 


21 


■i 


.20 


22... 


.90 


23 


1.60 


24 


1.00 




.20 


26 




.30 


27 


(a) 


.20 


28 


.20 


29 




.20 


30 


(o) 


.10 


31... 


.10 











a Channel dry. 

Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 45 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 
September 19-29. 

October 

November 

December 

1912 

January 

February 

March 

April 



Mean 
discharge 
in second- 
feet. 



0.40 
.25 
.24 
.45 



.05 
.32 
.32 
.41 



Run-off 
(total in 
acre-feet). 



15.10 
14.10 
27.80 



3.07 
18.40 
19.70 
24.40 



Month. 



1912— Continued. 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



0.32 
.01 
.23 
.26 
.28 
.43 
.40 
.33 



Run-off 
(total in 
acre-feet). 



19.70 
.60 
14.10 
16.00 
16.70 
26.40 
23.80 
20.30 



203.00 



Discharge measurements at station No. 46 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge* 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
1.47 
1.24 


Sec.-ft. 
3.49 

.86 


Nov. 28 


Feet. 
1.76 
1.76 


Sec.-ft. 
12.0 


Sept. 26 


Dec. 10 


11.4 









Note.— Bed of stream of cobbles and some large bowlders; section near gage quite rough; probably 
permanent. One channel at all stages. 



292 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, at station No. 46 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















1.25 


"*2." 42* 


1.61 
1.55 


2.24 
"3.'60" 

"iii" 
"i."76" 

1.72 
2.35 
4.72 

3.00 
2.26 
2.30 
1.92 

1.78 

2.16 
3.20 
2.19 
3.00 
2.08 

1.96 
1.90 
1.94 

"i."80" 

1.72 
1.64 
1.75 

"I'M' 


2.96 


2 
















3.40 


3 


1.60 
1.42 
1.35 

1.42 
1.42 
1.48 
1.45 
1.41 

1.35 
1.30 
1.28 

1.20 

1.18 


""6." 55" 
.55 


1.67 
1.55 
1.49 


1.82 
1.98 
2.00 

2.01 






2.09 

L82 

1.74 

~"i.'62* 
1.52 
1.49 


2.35 
2.02 
1.54 

"T46" 
1.39 
1.40 
1.40 


2.06 


4 


2.45 
2.00 


""i.'oo" 

"\*95* 


"2." 36' 

2.05 
2.11 
1.94 
1.82 

1.65 
2.02 
1.71 
1.64 
1.54 

1.65 


i.44 
1.34 

1.28 

""i23* 

'"i.34' 

1.34 
1.92 
1.74 
1.74 

"2. 88* 
1.84 
2.06 
2.49 

"2. 78" 
3.22 
2.40 
1.98 

1.96 
4.12 
2.98 
3.10 

**2.' 26" 


1.96 


5 


1.80 


6 


1.74 


7 


"".hi' 

.51 
.50 

.50 

.50 

1.38 

1.06 

.91 
.85 
.80 
.90 
1.55 


1.41 


1.90 


8 






2.13 


9 


1.50 
1.51 

1.60 
2.21 
2.41 

2.09 

1.84 
2.15 

' "2*26" 

2.00 
1.71 
1.76 


3.24 
2.42 

2.31 
2.02 

1.84 
1.76 

"i.92" 

1.91 
1.90 

2.12 
2.05 
1.86 






1.91 


10 






1.75 


11 






1.65 


12 








1.38 
1.48 


1.59 


13 


1.75 


1.31 


1.79 


1.52 


14 


1.53 


15 




1.22 


1.56 


1.65 
1.48 


1.62 


16 


1.82 


17 


1.45 


1.35 




1.64 


18 






1.67 


1.51 
1.42 
1.39 

1.39 
1.39 
1.36 
1.27 

1.22 
1.19 
1.17 
1.15 
1.62 


1.54 


19 


1.08 
1.05 

1.02 
.98 
.95 
.95 


1.46 






1.76 


20 








2.36 


21 

22 




1.30 


1.41 


"T29" 
1.25 
1.50 
1.37 

1.20 
1.68 


1.84 
2.65 


23 


1.38 




1.40 
1.70 

1.44 
1.46 
1.44 
1.39 


5.50 


24 


4.20 


25 


- 


1.62 

1.56 
1.48 
1.41 
1.36 
1.51 
2.61 


2.12 

2.25 
2.15 
2.08 


1.35 

"i.36* 


1.59 

1.45 
1.55 
1.48 


2.20 


26 






2.80 


27 


.92 
.90 

.85 
.82 




2.20 


28 


1.90 


29 


1.80 


30 










31 




1.20 





























Daily discharge, in second-feet, at station No. 46 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




33.2 
36.0 
40.8 
45.8 
51.2 

38.4 
27.8 
26.0 
24.8 
23.0 

15.5 
16.0 
16.5 
17.0 
17.5 


0.8 

.8 

.8 

2.4 

6.0 

10.2 
16.5 
23.0 
31.8 
12.2 

19.0 
26.6 
36.0 
48.5 
63.0 


2.9 
3.4 
2.6 
1.5 
2.4 

2.3 
1.5 
1.7 
4.4 
3.2 

4.0 

2.7 

29.0 

48.5 

138.0 


16 




18.0 
18.0 
10.2 
5.2 
4.4 

3.7 
3.0 
2.9 

2.7 
2.4 

2.2 

1.3 

1.1 

.9 

.8 
.9 


14.0 
23.0 
63.0 
107.0 
151.0 

199.0 
188.0 
192.0 
165.0 
47.6 

18.0 
9.8 
6.6 
3.7 
2.4 


90.5 


2 




17 




140.0 


3 .. 




18 




153.0 


4 




19 


15.5 
11.4 

8.1 
9.8 
68.5 
74.0 
58.0 

55.0 
44.9 
38.5 
29.0 
31.1 


105.0 


5 




20 


90.5 


6 




21 


40.0 


7 




22 


20.5 


8 




23 


13.0 


9 




24 


11.0 


10 




25 


40.0 


11. 




26 


23.0 


12 




27 


22.0 


13 




28 


18.0 


14 




29 


30.4 


15... 




30... 


23.0 






31 


18.0 











ISLAND OF HAWAII. 



293 



Daily discharge, in second-feet, at station No. 46 at 2,100-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


6.00 
6.00 
6.00 
2.70 
1.80 

2.70 
2.70 
3.70 
3.20 
2.60 

1.80 
1.30 
1.20 
1.00 
.70 

.60 
.50 
.40 
.30 
.20 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 
.10 


0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
2.20 
.40 
.20 

.10 
.10 
.10 
.10 
5.00 

100.00 
300.00 
400.00 
300.00 
100.00 

50.00 
10.00 
10.00 
10.00 


10.00 
10.00 
8.10 
5.00 
3.90 

3.20 
2.60 
3.30 
4.00 
4.20 

6.00 
37.00 
53.00 
64.00 
28.00 

13.00 
32.00 
40.00 
38.00 
36.00 

23.00 
9.40 

11.00 
9.00 
6.60 

5.20 
3.70 
2.60 
2.00 
4.20 
74.00 


30.00 
20.00 
14.00 
22.00 
23.00 

24.00 
250.00 
200.00 
144.00 

55.00 

45.00 
24.00 
18.00 
11.00 
13.00 

11.00 
30.00 
19.00 
18.00 
18.00 

30.00 
26.00 
16.00 
40.00 
30.00 

40.00 
32.00 
28.00 
20.00 
40.00 


45.00 
50.00 
50.00 
58.00 
65.00 

23.00 
20.00 
17.00 
17.00 
14.00 

14.00 
11.00 
11.00 
10.00 
10.00 

6.60 
3.20 
3.30 
3.40 
3.10 

2.80 
2.50 
2.20 
2.00 
1.80 

1.60 
1.30 
1.20 
1.00 
.80 
.70 


"i'.lb' 

""."80" 
""i."80" 

1.30 

"5."80' 

3.20 
5.00 
3.70 


10.00 
18.00 
28.00 
18.00 
14.00 

11.00 
8.80 
6.60 
4.40 
3.90 

35.00 
20.00 
13.00 
15.00 
5.20 

5.00 
5.00 
4.00 
4.00 
3.00 

2.60 
2.50 
2.40 
9.00 
6.00 

3.00 
3.40 
3.00 
2.30 
2.00 
1.50 


1.00 

5.00 

48.00 

24.00 

4.80 

3.60 
2.40 
2.30 
2.40 
2.40 

2.30 
2.20 
3.70 
5.00 
7.50 

3.70 
3.00 
8.10 
10.00 
5.00 

3.00 
1.20 
1.00 
4.00 
2.10 

.70 
8.40 
7.00 
6.00 
£.00 
4.00 


25.00 
55.00 
85.00 
120.00 
44.00 

26.00 
30.00 
20.00 
14.00 
11.20 

7.50 
24.00 
9.40 
7.20 
4.80 

7.50 
5.00 
4.20 
2.70 
2.30 

2.30 
2.30 
2.00 
1.10 
1.00 

.80 
.70 
.60 
.50 

6.60 


6.30 
5.00 
4.00 
3.00 
1.70 

1.20 

1,00 

.90 

1.00 

1.70 

1.70 

19.00 
11.00 
11.00 
11.00 

10.00 
105.00 
15.00 
27.00 
62.00 

70.00 
94.00 
142.00 
53.00 
22.00 

21.00 
277.00 
115.00 
129.00 
80.00 
41.00 


39.20 
40.00 
187. 00 
40.00 
30.00 

10.00 
9.00 
9.80 

48.00 
332.00 

118.00 
41.00 
44.00 
19.00 
12.00 

33.20 
140.00 

35.00 
118.00 

28.00 

21.00 
18.00 
20.00 
16.50 
13.00 

9.80 
7.20 
11.00 
9.00 
7.50 


114.00 


2 


163.00 


3 


27.00 


4 


21.00 


5 


13.00 


6 


11.00 


7 


18.00 


8 


31.00 


9 


18.00 


10 


11.00 


11 


7.50 


12 


5.80 


13 


4.40 




4.60 


15 


6.60 


16 


14.00 


17 


7.20 


18 


4.80 




11.00 


20 


49.00 


21 


15.00 


22 


80.00 


23 


432.00 


24 


264.00 


25 


36.00 


26 


96.00 


27 


36.00 


28, 


18.00 


29 


13.00 


30 


10.00 


31 


10.00 







Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 46 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 
September 19-29. 

October 

November 

December 

1912, 

January 

February 

March 

April 



Mean 
discharge 
in second 

feet. 



37.00 
16.40 
49.60 
35.00 



1.50 
44.40 
17.80 
43.00 



Run-off 
(total in 
acre-feet). 



1,020 
2,960 
2,160 



92.20 
2,550.00 
1,090.00 
2,560.00 



Month. 



1912— Continued 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



14.60 

2.00 

8.70 

6.09 

17.40 

43.30 

48.90 

50.10 



24.50 



Run-off 
(total in 
acre-feet). 



898.00 

119.00 

535.00 

374.00 

1,040.00 

2,660.00 

2,910.00 

3,080.00 



17,900.00 



Discharge measurements at station No. 47 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
1.64 
1.10 
2.24 


Sec.-ft. 
2.11 
.65 
5.86 


Nov. 19... 


Feet. 
2.45 
2.21 


Sec.-ft. 

7.85 


Sept. 26 


Dec. 10 . . 




4.48 


Oct. 25... 











Note.— Bed of stream of cobbles and some large bowlders. Section near gage quite rough. Station 
probably permanent. One channel at all stages. 



294 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, at station No. 47 at 2,700-foot level, near Eilo, Hawaii, for 1912, 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff , observers.] 



Bay. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Deo. 


1 
















1.07 


""2*55" 


1.81 
1.71 


2.55 
"3.50" 
"2.* 46" 

"*2."i6* 
2.15 
2.75 
3.65 

3.10 
2.56 
2.50 
2.35 
2.18 

2.51 
3.10 
2.60 
2.95 
2.44 

2.37 
2.34 
2.45 

""2."i8" 

2.11 
2.10 
2.30 

"*2.'i4" 


3.05 


2 
















3.55 


3 


1.52 
1.28 
1.25 

1.25 
1.28 
1.35 
1.34 
1.30 

1.22 
1.15 
1.08 
1.00 
.88 




2.17 
1.91 
1.62 


2.16 
2.36 
2.42 

2.55 






2.55 
2.34 
2.22 

2.16 

"i.'94" 
1.71 
1.54 


2.92 
2.37 
1.72 

"i."60* 

1.47 
1.65 
1.65 


2.48 


4 


2.55 
2.10 


"Too" 

"\*9o" 


"2.'50" 

2.34 
2.55 
2.55 
2.12 

1.92 
2.32 
2.06 
1.90 

1.78 

2.06 


1.52 
1.32 

1.24 

"i.'22* 


2.46 


5 


2.30 


6 


2.22 


7 .... 




1.48 


2.30 


8 






2.47 


9 


"i'.2h" 
1.11 
.70 

.35 

.28 

1.41 

2.21 


2.01 
2.01 

2.14 
2.60 
2.76 
2.79 
2.45 

2.60 

"*2."54" 

2.39 
2.19 
2.21 


3.16 
2.68 

2.59 
2.45 

"*2."25" 
2.43 

2.32 

""2*39" 
2.42 
2.39 

2.51 
2.48 
2.32 






2-36 


10. . . 






1.30 

1.27 

1.88 
1.54 
1.82 

"% 85* 
2.05 
2.32 

2.78 

"% 78" 
3.10 
2.58 
2.25 

2.30 
3.75 
2.90 
2.92 

"2.66" 


2.20 


11 






1.96 


12 








1.49 
1.76 


1.92 


13 


1.70 


1.20 


2.08 


1.76 


14 


1.89 


15 





1.10 


1.70 


2.10 
1.69 


2.06 




2.30 


17... 


1.52 


1.27 




2.04 


18 






2.04 


1.76 
1.59 
1.49 

1.51 
1.54 
1.35 
1.26 

1.07 

.99 
.91 

.89 
.22 


1.91 


19 


.75 

.68 

.62 
.58 
.55 
.55 


1.58 






2.31 


20 








2.72 


21 




1.20 


1.39 


1.16 

1.28 
1.24 

1.14 
1.71 


2.30 


22 


2.74 


23 


1.50 




1.31 

2.06 

1.65 
1.69 
1.56 
1.51 


3.32 


24 


3.00 


25 




2.14 

2.06 
1.81 
1.59 
1.42 
1.89 
3.16 


2.45 

2.55 
2.45 
2.25 


1.40 
**i.*38" 


1.85 

1.70 
1.90 
1.62 


2.47 


26 






2.92 


27 


.52 
.50 
.48 
.45 




2.46 


28 


2.30 


29 


2.32 


30 










31 




1.30 





























Daily discharge, in second-feet, at station No. 47 at 2,700-foot level, near Silo, Hawaii, 

for 1911. 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




9.20 
9.20 
10.30 
11.40 
12.60 

11.00 
9.56 
9.78 
9.92 

10.10 

7.30 
7.60 
7.92 
8.24 
8.56 


0.47 

.47 

.47 

1.40 

3.10 

4.10 
5.50 
7.15 
9.20 
5.14 

6.25 
7.60 
9.20 
11.00 
13.00 


1.52 
1.30 
1.04 
1.00 
1.22 

1.04 
.88 
.97 
1.64 
1.50 

1.44 

1.30 

13.00 

21.00 

34.00 


16 




8.72 
8.88 
5.14 
2.86 
2.14 

1.72 
1.42 
1.32 
1.20 
1.08 

.97 

.82 
.70 
.58 
.50 

.47 


4.90 

8.72 

14.20 

21.20 

27.60 

35.50 
31.00 
34.60 
27.00 
12.00 

6.10 
4.10 
3.26 
2.30 
1.76 


16.00 


2 




17 




26.00 


3 




18 




32.50 


4 




19 


6.85 
5.50 

4.40 
5.50 
16.00 
14.50 
13.00 

9.56 
11.00 
14.50 
10.10 
10.10 


20.40 


5 




20 


18.00 


6 




21 


9.20 


7 




22 


6.10 


8 




23 


4.90 


9 




24 


3.10 


10 




25 


9.20 


11 




26 


3.90 


12 




27.. 


3.74 


13 




28 


2.80 


14 




29 


5.50 


15 




30 


4.90 






31 


3.90 











ISLAND OF HAWAII. 



295 



Daily discharge^ in second-feet, at station No. 47 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.50 
1.50 
1.80 
.95 
-.90 

.90 

.95 

1.10 

1.10 

1.10 

.90 
.75 
.65 
.55 
.45 

.35 
.30 
.30 
.30 

.25 
.25 
.20 
.20 
.20 

.20 
.20 
.20 
.20 
.15 
.15 


0.10 
.10 
.10 
.10 
.10 

.10 
,10 
.10 
.10 
.10 

.10 
.10 
.90 
.70 
.30 

.20 
.10 
.10 
1.20 
5.00 

20.00 
35.00 
43.00 
30.00 
20.00 

10.00 
5.00 
5.00 
5.00 


5.00 
5.00 
4.60 
2.50 
1.65 

1.50 
1.35 
2.30 
3.20 
3.20 

4.30 
11.00 
15.00 
15.50 

8.40 

5.60 
11.00 
10.50 
10.00 

9.90 

6.25 

4.80 
5.00 
4.60 
4.30 

3.60 
2.15 
1.60 
1.25 
2.45 
24.80 


15.00 
10.00 
4.50 
7.00 
7.90 

10.10 
35.00 
30.00 
24.80 
12.60 

10.75 
8.40 
7.00 
5.50 
8.10 

6.40 
7.00 
7.45 
7.90 
7.45 

9.40 
8.90 
6.40 
7.40 
8.40 

10.10 
8.40 
5.50 
6.00 
6.00 


6.00 
6.00 
7.00 
10.10 
6.00 

3.90 
3.00 
2.00 
2.00 
2.00 

2.00 
2.00 
1.80 
1.70 
1.60 

1.50 
1.45 
1.50 
1.55 
1.50 

1.50 
1.50 
1.40 
1.30 
1.20 

1.20 
1.15 
1.10 
1.10 
1.10 
1.00 


0.80 
.60 
.60 
.60 
.55 

.50 
.45 
.50 

.50 
.60 

.70 
.70 
.85 
.80 
.70 

.80 
.95 
.90 
.90 
.90 

.85 
1.00 
1.50 
2.00 
2.30 

1.80 
2.50 
1.65 
1.50 
1.50 


2.00 
5.00 
10.10 
6.70 
5.15 

4.50 
3.60 
2.75 
1.85 
1.50 

20.00 

10.00 

3.75 

5.00 

1.80 

1.50 
1.50 
1.50 
1.50 
1.50 

1.20 
1.10 
1.00 
3.60 
2.60 

1.70 
1.80 
1.50 
1.40 
1.00 
1.00 


0.65 
1.00 
18.60 
6.20 
1.85 

1.70 
1.60 
1.35 
1.70 
1.70 

1.60 
1.40 
2.00 
3.00 
3.90 

1.80 
2.60 
3.40 
6.00 
2.00 

1.00 

.85 
.65 
.95 
.90 

.75 
1.85 
1.50 
1.20 
1.00 
1.50 


8.00 
10.10 
35.00 
35.00 

9.20 

6.70 
10.10 
10.10 
4.10 
3.40 

2.60 
6.40 
3.60 
2.50 
2.05 

3.60 

2.80 
2.00 
1.60 
1.40 

1.40 

1.50 

1.10 

.95 

.80 

.65 
.55 
.45 
.45 
.05 


2.15 
1.85 
1.65 
1.45 
1.40 

.90 
.90 
.90 
.90 
1.00 

.95 
1.40 
1.50 
2.15 
2.00 

2.00 
17.00 
3.50 
6.40 
15.40 

15.40 
15.40 
23.00 
10.70 
5.50 

6.10 
41.50 
18.00 
18.50 
16.00 
12.20 


10.10 
20.00 
34.00 
10.00 
7.60 

5.00 
4.50 
4.40 
14.50 
38.50 

23.00 
10.30 
9.20 
6.85 
4.70 

9.40 
23.00 
11.00 
19.50 

8.25 

7.15 
6.70 
8.40 
6.60 
4.70 

4.00 
3.90 
6.10 
5.20 
4.30 


22.00 


2 


35.50 


3 


8.70 


4 


8.55 


5 

6 


6.10 
5.15 


7 


6.10 


8 


8.70 


9 


7.00 


10 


4.90 


11 


2.85 


12 


2.60 


13 


2.00 




2.45 


15 


3.60 


16 


6.10 


17 


3.40 


18 


2.55 




6.25 




13.60 


21 


6.10 


22 


14.20 


23 ... 


28.60 




21.00 


25 


8. 78 


26 


18.60 


27 


8.55 


28 


6.10 


29 


6.40 


30 


5.00 


31 


5.00 







Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 47 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



Month. 



discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



1911 
September 19-29. 

October... 

November 

December 

1912 

January 

February 

March. 

April 



10.10 

5.85 
10.60 
8.16 



361.00 
634.00 
503.00 



.61 
6.30 
4.27 
10.30 



37.50 
362.00 
263. 00 
613.00 



1912— Continued 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



2.52 
1.02 
3.52 
2.46 
5.60 
7.99 
11.00 
9.24 



155.00 
60.70 
216. 00 
151.00 
333.00 
491. 00 
655. 00 
568.00 



5.38 



3,910.00 



Discharge measurements at station No. 48 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.j 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16... 


Feet. 
0.45 
.36 

.47 


Sec.-ft. 
0.07 

.23 


Nov. 19 


Feet. 
0.58 
.48 


Sec.-ft. 
0.57 


Sept. 26 


Dec. 10 


.19 


Oct. 25 











Note.— Bed of stream of gravel and some small cobbles, probably slightly shifting. One channel at all 



296 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, at station No. 48 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayefi, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















0.47 


'"6*68" 
1.40 
1.42 
1.57 

1.57 
1.67 
.51 
.52 

.40 
.54 
.44 
.44 
.40 

.50 


0.54 
.55 

""".45" 

.42 

.42 

""."42' 

""."44" 

.44 
.62 
.64 
.56 

""."72" 

.51 
.69 
.75 

'""."76* 

.88 
.61 
.47 

.70 
.86 
.86 
.75 

""."76' 


0.56 
""."96' 
""."56" 

""."43" 

.44 
.84 
1.06 

.75 
.59 
.63 
.52 
.44 

.80 
.90 
.79 
.80 
.55 

.67 
.54 
.62 

'""."46" 

.47 
.45 
.59 

*".*54' 


1 10 


2 
















1 12 


3 


0.46 
.44 
.42 

.50 
.52 
.65 
.62 
.58 

.52 
.48 
.45 
.44 
.41 

.38 


--(a)-- 
(«) 


0.50 
.47 
.43 


0.61 
.66 
.61 

.72 






0.70 
.60 
.54 

.50 

"".*48" 
.45 
.47 


.90 

.69 
.49 

"".'49" 
.44 
.51 
.51 


.64 


4 


1.06 
.99 


""6." 48' 
""".~46" 


.55 


5 


.49 


6 


.46 


7 


w 

(?) 

(a) 

(a) 

0.61 
.50 
.40 

.40 
.39 
.35 
.61 
.80 

1.20 


.49 


.51 


8 






56 


9 


.51 
.51 

.54 
.68 
.73 

.77 
.56 

.51 
.76 

"".'59* 

.52 
.50 
.49 


.91 

.72 

.65 
.61 

.59 
.64 

.55 

"**."62" 
.59 

.58 

.68 
.65 
.64 






.52 


10 






.47 


11 






.42 


12 








.46 
.52 


.40 


13 


.59 


.58 


.50 


.38 


14 


.46 


15 




.52 


.43 


.55 
.43 


.49 


16 


.62 


17 


.53 


.43 




.43 


18 






.64 


.43 
.40 
.39 

.42 
.42 
.40 
.38 

.35 
.35 
.34 
.34 
.60 


.50 


19 


(a) 
(a) 

(a) 
(a) 
(a) 
(a) 


.54 






.60 


20 








.72 


21 




.45 


.40 


""."46" 
.40 
.40 
.40 

.41 
.52 


.52 


22 


.72 


23 


.57 




.44 

.55 
.50 

.44 
.50 


1.12 


24 


.83 


25 




.52 

.52 
.48 
.45 
.44 
.63 
1.00 


.69 

.7& 
.72 
.71 


.52 
'"'.hi' 


.58 

.51 

.52 
.49 


.58 


26 






.80 


27 


(a) 
(a) 
(a) 
(a) 




.60 


28 


.50 


29 


.54 


30... 










31 




.50 





























a Channel dry. 

Daily discharge, in second-feet, at station No. 48 at 2,700-foot level, near Hilo, Hawaii^ 

for 1911. 



Day. 


Sept.. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




1.00 

1.00 
1.10 
1.24 
1.45 

1.38 
1.24 
1.31 
1.38 
1.45 

1.00 
1.05 
1.10 
1.17 
1.24 


0.21 
.21 
.21 
.25 
.60 

.75 

.90 

1.05 

1.17 

.70 

.90 
1.10 
1.38 
1.66 
1.96 


0.25 

.17 
.13 
.15 
.17 

.25 

.21 

.25 

3.20 

1.45 

1.66 
.85 
2.90 
5.25 
7.78 


16 




1.31 

1.45 

.85 

.42 

.39 

.32 
.25 
.28 
.32 
.36 

.39 
.23 
.23 
.23 
.23 
.21 


1.17 
2.12 
3.40 
4.70 
6.13 

7.56 
6.90 
8.22 
7.78 
1.96 

.60 
.53 
.53 
.42 
.39 


2.20 


2 




17 




5.80 


3 




18 




6.35 


4 




19 


0.32 
.23 

.15 

.42 

1.10 

1.00 

1.24 

1.66 
1.10 
1.96 
1.00 
1.00 


4.92 


5 




20 


2.90 


6 




21 


1.24 


7 




22 


.32 


8 




23 


.32 


9 




24 


.28 


10 




25 


1.96 


11 




26 


1.45 


12 




27 


1.80 


13 




28 


1.45 


14 




29 


2.90 


15 




30 


2.70 






31 


2.20 











ISLAND OF HAWAII. 



297 



Daily discharge, in second-feet, at station No. 48 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.15 
.15 
.15 
.10 
.10 

.25 
.30 
.85 
.70 
.50 

.30 
.20 
.15 
.10 
.05 

.05 
.05 
.05 

(a) 

(a) 

(a) 

(°) 
(a) 
(a) 
(a) 

( a ) 
(°) 
(°) 
(a) 
(a) 
(«) 


(«) 
(a) 
)a) 

l°l 
[ a ) 

( a ) 

(Ol 

(a) 
( a ) 
(«) 

0.65 
.25 
.05 

.05 
.05 
.05 
.65 
1.80 

5.80 
9.00 
11.00 
8.00 
3.00 

1.00 
1.00 
1.00 
1.00 


0.50 
.30 
.25 
.20 
.10 

.15 
.20 
.25 
.30 
.30 

.40 
1.00 
1.30 
1.60 

.45 

.30 
1.50 
3.00 
2.00 

.55 

.30 
.25 
.20 
.20 
.30 

.30 
.20 
.15 
.10 

.75 
3.70 


2.00 
1.00 
.65 
.90 
.65 

1.25 

5.00 
3.50 
2.80 
1.25 

.85 
.65 
.60 
.55 

.80 

.45 
.90 
.70 
.55 
.55 

1.00 
.85 
.80 
.90 

1.05 

1.60 
1.25 
1.15 
.80 
1.00 


2.50 
3.00 
3.00 
4.30 
6.00 

3.60 
1.00 
.80 
.60 
.60 

.60 
.60 
.55 
.60 
.70 

.80 
.35 
.30 
.40 
.30 

.30 
.30 
.50 
1.00 
.30 

.30 
.30 
.40 
.60 
.40 
.25 


0.20 
.20 
.20 
.20 
.20 

.20 
.15 
.20 
.20 
.30 

.30 
.40 
.50 
.40 
.30 

.20 
.10 
.10 
.10 
.10 

.15 
.20 
.30 
.40 
.50 

.30 
.30 
.20 
.20 
.20 


0.30 
.70 

1.10 
.60 
.40 

.25 
.25 
.20 
.15 
.20 

4.00 
1.50 

.25 
1.00 

.10 

.10 
.10 
.10 
.10 
.10 

.05 
.10 
.15 
1.05 
.80 

.40 
.25 
.15 
.25 
.20 
.20 


0.20 

.30 

2.70 

1.05 

.25 

.25 
.25 
.15 
.30 
.30 

.20 
.15 
.30 
.50 
.40 

.10 
.20 
.80 
1.00 
.10 

.05 
.05 
.05 
.05 
.05 

.10 
.30 
.30 
.20 
.20 
.20 


0.50 
1.00 
8.00 
8.20 
9.95 

9.95 

11.10 

.30 

.30 

.20 

.05 
.40 
.15 
.15 

.05 

.25 
.20 
.10 
.05 
.05 

.10 
.10 
.05 
.05 
.05 

.03 
.02 
.02 
.02 
.60 


0.40 
.40 
.40 
.15 
.10 

.10 
.10 
.10 
.10 
.15 

.15 
.70 
.80 
.45 
.50 

.40 
1.25 

.30 
1.05 
1.45 

1.50 
1.10 
2.45 
.65 
.20 

1.10 
2.30 
2.30 
1.45 
1.20 
1.10 


0.45 

.40 

2.70 

1.50 

.45 

.10 

.10 

.15 

2.10 

4.30 

1.45 
.55 
.75 
.30 
.15 

1.80 
2.70 
1.60 
1.80 
.40 

1.05 
.40 
.70 
.50 
.20 

.20 
.15 
.60 
.50 
.40 


4.70 


2 


4.90 


3 


.80 


4 


.40 


5 


.25 


6 


.15 


7 


.30 


8 


.45 


9 


.30 


10 


.20 


11 


.10 


12 


.05 


13 


.05 




.15 


15 


.25 


16 


.70 




.10 


18 


.25 




.60 


20 


1.25 


21 


.30 


22 


1.25 


23 


4.90 


24 


2.05 


25 


.55 


26 


1.80 


27 


.60 


28 


.25 


29 


.40 


30 


.20 


31 


.20 







a Channel dry. 

Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
chage for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 48 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 
September 19-29. 

October 

November 

December 

1912 

January 

February 

March 

April 



Mean 
discharge 
in second 

feet. 



0.93 
1.83 
2.18 
2.05 



.14 
1.53 



Kun-off 
(total in 
acre-feet). 



50.80 
130.00 
126. 00 



8.61 
88.00 
41.80 
71.40 



Month. 



1912— Continued 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



Run-off 

(total in 

acre-feet). 



1.14 
.24 



1.73 
.79 
.95 



70.10 
14.30 
30.10 
22.10 
103.00 
48.60 
56.50 
56.60 



611.00 



Discharge measurements at station No. 49 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 16 


Feet. 
-0.09 
(a) 
.09 


Sec.-ft. 



Nov. 19 


Feet. 
0.12 
.08 


Sec.-ft. 
0.13 


Sept. 26 


Dec. 10... .... 


.05 


Oct. 25 


0.05 











a Channel dry. 
Note.— Bed of stream of silt and sand ;shifting. One channel at all stages. 



298 



WATER RESOURCES OP HAWAII, 1912. 



Daily gage height, in feet, at station No. 49 at 2,700-foot level, near Eilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 
















-0.06 


""6." 26" 

.90 

.88 
.16 

- .28 
.32 
.12 
.08 

.01 

.88 

.00 

-.01 

-.03 

-.04 


0.08 
.07 

'-."6i" 

-.11 
-.10 

'-."io" 
'-."62* 

-.05 
.08 

-.02 
.12 

"".'34" 
.02 
.30 

.50 

"".*28" 
.55 
.25 
.05 

.28 
.50 
.38 
.35 

"\ T 2l" 


0.03 
""."36" 
""."08" 

"""62" 
.08 
.42 
.52 

.20 
.12 
.21 
.02 
-.02 

.48 
.50 
.35 
.30 
.16 

.21 
.08 
.22 

*-."6i" 

-.01 
-.02 

.09 

""."is* 


0.75 


*2, 
















.31 


3 


0.04 

n 

.02 
.04 
.09 
.05 
.02 

(a) 
(a) 
(a) 
\a) 
(a) 

(a) 




0.12 
+.10 
+.11 


0.18 
.38 

.27 

.32 






0.19 
.11 
.08 

.02 

***.*6i" 

.02 


.40 

.19 

-.02 

""."49" 

-.03 

.05 

.05 


.40 


4 


0.78 
.73 


"[a)" 


.32 


5 


.14 


6 


.02 


•?::::::::::::::. 


(a) 
(a) 

(«) 
00 

0.08 

+.10 
+.10 

+.11 

+.12 
.15 
.25 

.50 


.10 


►21 


8 






.42 


9 


.15 
.15 

.12 
.36 
.32 

.18 

.15 

.42 

""'."22" 

.12 

+.10 

.12 


.38 
.35 

.21 

.14 

.19 

.12 

""."24" 
.11 
.25 

.23 
.22 
.21 






.14 


10 






.03 


11 








-.11 


12 








-.05 
.05 


—.15 


13 


.10 


+0.15 


.60 


-.15 


14. 


—.13 


15 




+.09 




.05 
-.08 


.02 


16 


.28 


17 


(«) 


(a) 




-.06 


18 






.11 


-.01 
-.04 
-.05 

-.01 

.00 

-.03 

^-.05 

-.05 
-.06 
-.09 
-.08 
.15 


.08 


19 


(a) 
(a) 

(o) 

(a) 
(a) 
(a) 


( a ) 






.23 


20 








.35 


§1 




(o) 


.15 


"-."io" 

.00 

-.01 

.04 

.04 
.02 


.22 


22 


.40 


23 


(a) 




.10 
.08 

.01 


.82 


24 


.30 


25 




.11 

.11 

+.01 

+.09 

+.15 

.32 

.51 


.35 

.41 

.32 

+.09 


(0) 


.09 

.06 
.11 
.06 


.06 


26 






.32 


27 


(a) 

S 




.12 


28 


.05 


29 






.10 


30 














31 




(a) 





























a Channel dry. 
Monthly discharge at station No. 49 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



October... 
November. 
December. 



1911. 



January . . 
February. 
March.... 

April 

May 



1912. 



Mean 
discharge 
in second 

feet. 



a 0.05 
o.lO 
o.lO 



.003 
.090 
.110 
.180 
.120 



Run-off 
(total in 
acre-feet). 



5.95 
6.15 



.20 

5.30 

6.70 

10.70 

7.10 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 



The year. 



Mean 
discharge 
in second 

feet. 



0.02 
.04 
.04 
.12 
.13 
.13 
.15 



Run-off 
(total in 
acre-feet). 



1.00 
2.60 
2.40 
7.30 
8.30 
7.70 
9.10 



68.40 



a Estimated. 

Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
record at camp near station No. 50. 

Discharge measurements at station No. 50 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.J 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 23 


Feet. 
0.39 
.35 
1.31 


Sec.-ft. 
0.07 
.04 
3.00 


Oct. 25 


Feet. 
0.46 
.79 
.40 


Sec.-ft. 
0.21 


Sept. 28 


Nov. 19 


.45 


Oct. 23 


Dec. 10 1 


.15 









Note.— Bed of stream of sand and gravel; shifting slightly. One channel at all stages. 



ISLAND OF HAW AH. 



299 



Daily gage height, in feet, at station No. 50 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Billkov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.41 
.40 
.36 
.35 
.32 

.32 
.34 
.39 
.34 
.34 

.32 
.31 
.31 
.30 

.29 

.29 
.29 
.25 
.25 
.25 

.25 
.25 
.25 
.25 
.25 

.26 
.30 
.29 
.25 
.24 
.24 


0.24 

"*\*24* 
.24 

.24 

.24 
.22 
.22 
.21 
.21 

.21 
.23 
.41 
.33 
.26 

.24 
.22 
.21 
.35 

.72 

1.15 
1.55 
1.68 
1.31 
1.20 

.85 
.80 
.90 
.80 


0.85 
.81 
.72 
.52 
.45 

.45 
.52 
.72 
.82 
.73 

.98 
1.02 

.98 
1.05 

.78 

.61 
1.06 
1.51 
1.30 

.70 

.67 
.44 
.78 
.54 
.44 

.44 
.40 
.35 
.34 
.71 
.98 


0.50 
.52 
.59 
.89 
.76 

.96 
1.70 
1.34 
1.02 

.93 

.84 
.79 
.71 
.54 

.81 

.61 
.88 
.90 
.78 
.91 

.88 
.75 
.71 
.69 
.92 

.96 
.72 
.60 
.58 
.54 


0.69 
.74 
.79 

1.02 
.94 

.72 
.65 

"*\*62* 
.60 

.59 

"*."59" 

"""."69" 

*""."60" 
.58 
.55 
.58 

.55 
.52 
.46 
.44 
.42 

.43 

.44 
.42 
.42 
.45 

.42 


0.45 
,42 

"""."38" 
.38 

.38 
.38 
.44 
• 44 

'"".*49" 
.48 
.45 

.51 

.46 

....... 

.40 

.40 

.48 

....... 

.69 
.82 
.66 
.60 
.55 


0.65 

.69 

2.00 

.82 
.60 

.60 
.54 
.53 
.52 

.81 

1.01 

.74 
.60 
.79 
.53 

.50 
.51 
.52 
.48 
.48 

.48 
.46 
.58 
.80 
.67 

.64 
.59 
.52 
.61 
.58 
.50 


0.47 
.40 

1.15 
.67 
.46 

.41 
.61 

.41 
.72 
.68 

.56 
.49 
.68 
.70 
.81 

.65 
.46 
.74 
.76 
.65 

.51 
.39 
.39 
.51 
.36 

.64 
.79 
.79 
.72 
.95 
.90 


1.05 
.92 
1.35 
1.52 
.80 

.67 
1.01 
.46 
.51 
.44 

.39 
.88 
.59 
.58 
.46 

.72 
.49 
.51 
.36 

.48 

.60 
.62 
.50 
.41 
.39 

.38 
.36 
.34 
.54 
.96 


0.78 
.76 
.75 
.72 

.72 

.70 
.71 
.71 
.75 
.79 

.78 
.78 
.74 
.86 
.90 

.92 

1.08 

.78 

.82 

1.18 

.76 

1.60 

1.19 

.92 

.68 

1.05 
1.59 
1.36 
1.22 
1.01 
.98 


0.82 
.84 

1.28 
.78 
.76 

.60 

.53 

.65 

1.28 

1.49 

1.00 
.79 
.76 
.60 

.48 

1.09 

1.25 
1.12 
1.00 
.80 

.76 
.80 
.98 
.90 
.72 

.60 
.88 
.86 
.79 

.88 


1.42 


2 


1.22 


3 


1.39 


4 


.76 


5 


.52 


6 


.44 


7 


.43 


8 


.44 


9 


.44 


10 


.40 


11 


.38 


12 


.35 


13 


.35 


14 


.35 


15 


.34 


16 


.46 


17 


.34 


18 


.32 


19 


.45 


20 


.66 


21 


^42 


22 


.73 


23 


1.34 


24 


.96 


25 


.43 


26 


.59 


27 


.40 


28 


.25 


29 


.28 


30 




31 











Daily discharge, in second-feet, at station No. 50 at 

for 1911. 



\700-foot level, near Hilo, Hawaii, 



Day. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




0.46 

.22 

1.70 

2.78 

.56 

.53 
.92 
.77 
.65 
.50 

.30 
.18 
.18 
.10 
.46 


0.05 
.05. 
.13 
d8 

. -14 

.34 
.28 
.28 
.34 
.16 

.14 
.13 
.42 
.24 
.80 


0.10 
.10 
.05 
.05 
.10 

.10 
.10 
.10 
.30 
.15 

.14 
.12 
.80 
.56 
3.50 


16 


0.62 
.38 

1.00 
.46 
.34 

.24 
1.45 

.84 
1.25 

.53 

.84 
.65 
.88 
.34 
.80 


0.18 
.46 
.21 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.05 
.05 


0.24 
.68 
.32 

1.12 
.28 

2.96 
3.38 
3.80 
2.60 

.88 

.18 
.14 
.16 
.15 
.10 


1 82 


2 




17 


1 40 


3 




18 . 


1 20 


4 




19 


1 20 


5 




20 


1 12 


6 




21 


.15 


7 




22 


12 


8 




23 


05 


9 




24 


05 


10 




25 


22 


11 




26 


.05 


12 




27 


.21 


13 


0.46 

.46 

1.04 


28 


10 


14 


29 


.14 


15 


30 


.05 




31 


.05 











300 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 50 at 2,700-foot level, near Eilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dee. 


1 


0.05 
.05 
.05 
.05 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.30 

2.00 
4.40 
5.20 
3.00 
2.30 

.65 
.50 
.80 
.50 


0.65 
.50 
.30 
.10 
.05 

.05 
.10 
.30 
.60 
.40 

1.10 
1.30 
1.10 
1.40 
.50 

.15 
1.50 
4.20 
2.90 

.30 

.25 
.05 
.50 
.10 
.05 

.05 
.05 
.05 
.05 
.30 
1.10 


0.10 
.10 
.15 
.80 
.40 

1.00 
5.30 
3.10 
1.30 
.90 

.60 
.50 
.30 
.10 
.50 

.15 
.70 
.80 
.50 
.80 

.70 
.40 
.30 
.30 
.90 

1.00 
.30 
.15 
.15 
.10 


0.30 
.40 
.50 

1.30 
.95 

.30 
.20 
.20 
.20 
.15 

.15 
.15 
.15 
.20 
.30 

.20 
.15 
.15 
.10 
.15 

.10 
.10 
.10 
.05 
.05 

.05 
.05 
.05 
-.05 
.05 
.05 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.05 
.05 

.05 
.10 
.20 
.20 
.30 

.30 
.60 
.20 
.15 
.10 


0.20 
.30 

7.10 
.60 
.15 

.15 
.10 
.10 
.10 
.50 

1.25 
.40 
.15 
.50 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.15 
.50 
.25 

.20 
.15 
.10 
.15 
.15 
.10 


0.10 
.05 

2.00 
.25 
.10 

.05 
.15 
.05 
.30 
.30 

.10 
.10 
.30 
.30 
.50 

.20 
.10 
.40 
.40 
.20 

.10 
.05 
.05 
.10 
.05 

.20 
.50 
.50 
.30 
1.00 
.80 


1.40 

.90 

3.20 

4.20 

.50 

.25 
1.25 
.10 
.10 
.05 

.05 
.70 
.15 
.15 
.10 

.30 
.10 
.10 
.05 
.10 

.15 
.20 
.10 
.05 
.05 

.05 
.05 
.05 
.10 
1.00 


0.50 
.40 
.40 
.30 
.30 

.30 
.30 
.30 
.40 
.50 

.50 
.50 
.40 
.70 
.80 

.90 

1.60 

.50 

.60 

2.20 

.40 

4.70 

2.20 

.90 

.30 

1.45 
4.60 
3.30 
2.40 
1.25 
1.10 


0.60 
.60 

2.80 
.50 
.40 

.15 

.10 

.20 

2.80 

4.00 

1.20 
.50 
.40 
.15 
.10 

1.65 
2.60 
1.80 
1.20 
.50 

.40 
.50 
1.10 
.80 
.30 

.15 
.70 
.70 
.50 
.70 


3.60 


2 


2.40 


3 


3.40 


4 


.40 


5 


.10 


6 




.05 


7 




.05 


8 


.05 


.05 


9 


.05 


10 




.05 


11 




.05 


12 




.05 


13 




.05 


li. 




.10 


15 




,20 


16 




.10 


17 




.10 


18 




.10 


19 




.10 


20 




.20 


21 




.05 


22 




.40 


23 




3.10 


24 




1.00 


25 




.05 


26 




.15 


27 




.05 


28 




.05 


29 




.05 


30 




.05 


31 






.05 











Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near this station . 

Monthly discharge at station No. 50 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 
September 13-30. 

October 

November 

December 

1912 

January 

February 

March 

April 



Mean 
discharge 
in second 

feet. 



0.70 
.40 



.45 



.05 
.71 
.65 
.75 



Run-off 
(total in 
acre-feet). 



24.60 
41.20 
28.00 



3.07 
40.80 
40.00 
44.60 



Month. 



1912— Continued 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second 

feet. 



Run-off 

(total in 

acre-feet). 



0.22 
.12 
.46 
.31 
.52 

1.13 
.94 
.52 



.53 



13.50 
7.14 
28.30 
19.10 
30.90 
69.50 
55.90 
32.00 



385.00 



Discharge measurements at station No. 51 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20.. 


Feet. 
0.84 
.74 
.79 


Sec.-ft. 
0.09 
.02 
.13 


Nov. 19... 


Feet. 
0.90 

.80 


Sec.-ft. 
0.44 


Sept.28 


Dec. 10... 


.20 


Nov. 7 











Note.— Bed of stream of silt, sand, and gravel; probably shifting. One channel at all stages. 



ISLAND OF HAWAII. 



301 



Daily gage height, in feet, at station No. 51 at 2,700-foot level, near Hilo, Hawaii, for 1912, 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.79 


0.85 
.93 






0.82 






2 






1.02 

.85 
.84 
.80 

.79 

.85 






0.80 

1.65 

1.14 

.93 

"\*90" 
.84 
.95 
.90 

""."86* 

*"*9o" 
1.01 








3 






1.30 
1.29 
1.11 

1.01 






1.60 

""."96" 

.98 
1.05 

.88 
.86 

.80 
.90 

.88 
.90 
.82 

.89 
.84 
.80 
.80 


""."so" 

.78 

.76 

.74 
.74 

""79" 

.76 
.80 
.79 

.88 

.80 

1.12 

.90 

.92 

1.10 

"i.'os" 

1.37 
1.04 

.84 

.95 
1.66 
1.16 
1.33 
1.11 


1.36 




4 




0.69 
.68 

"\*68" 
.68 
.68 

.68 

.66 

1.05 

.82 

.71 
.70 










5 


0.80 

.81 
.80 
.80 


1.05 


.78 


.95 

.97 
.90 

""."82* 


.88 

"".*80" 
.81 
1.06 
1.60 

1.01 
.90 
.92 
.82 
.80 

1.20 

1.32 

.98 

.98 

.86 

.87 

.84 

1.00 

"*.*80" 

.80 
.80 
.96 
.87 
.80 


0.80 


6 

7 


.78 
.80 


8 






.77 


.85 


9... 


.9i 

.92 

1.40 
1.35 

1.48 
1.44 


1.52 
1.12 

1.05 

1.02 

.99 

.90 




.80 


10 




.79 
*"\*79" 




.80 


11 


.75 
.75 
.74 

.74 

.74 





1.16 


.78 


12 


.75 


13 




.90 
1.00 


.72 


14 




.78 


.75 




.80 


16 


.78 


.85 




.91 


17 


1.12 
1.47 
1.02 
1.21 

.86 
.80 

.88 

"*".*90" 

.89 
.83 
.82 
.79 
.89 
1.70 




.83 


.82 


.77 






.90 
.95 
.91 

.93 
1.01 

.96 
1.05 


.73 




.80 


19, 


.74 

.74 

.72 
.72 
.71 
.71 
.70 

.70 
.72 
.70 
.70 
.69 


"""."90" 

.88 




.82 
.81 


.91 


.90 


20. 




.81 


1.03 




.80 


.80 
.80 
.79 
.78 

.75 
.74 
.74 
.74 


.84 


22 


.79 






1.09 


23 






.80 
.84 
.79 

.79 

.87 


1.56 


24 


.86 






1.20 


25 




.89 

.89 
.85 
.82 
.87 
.82 
.80 


.86 


26 


1.19 
.99 
.95 


.79 
"\*79* 


.81 
1.01 
.91 


1.18 


27... 




28 


.82 


29 

30 


.83 


31 





































Monthly discharge at station No. SI at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



September. 

October 

November. 
December. 



1911. 



January.. 
February. 

March 

April 



1912. 



Mean 
discharge 
in second- 
feet. 



0.40 
a. 50 
a. 50 



.10 
.14 
.71 

.71 



Run-off 
(total in 
acre-feet). 



24.60 
29.80 



6.20 
8.10 
43.60 
42.50 



Month. 



1912— Continued. 

May 

June 

July 

August 

September 

October 

November. 

December 



The year. 



Mean 
discharge 
in second 

feet. 



0.29 
.23 
.33 
.35 
.43 
.56 
.54 
.46 



40 



Run-off 
(total in 
acre-feet). 



17.60 
12.10 
20.20 
21.60 
25.40 
34.50 
32.00 
28.00 



292.00 



a Estimated. 

Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rain- 
fall record at camp near station No. 50. 

Discharge measurements at station No. 52 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Feet. 
0.76 
.34 


Sec.-ft. 
9.13 
2.84 


Nov. 19... ........ 


Feet. 
1.58 
1.10 


Sec.-ft. 
49.3 


Sept. 28 


Dec. 10... 


20.4 









Note. — Bed of stream of cobbles and some large bowlders. Section at gage is quite rough. Station : 
probably permanent. One channel at all staees. 



302 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, at station No. 52 at 2,700-foot level, near Kilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.42 


1.00 
1.11 












2 






1.46 
1.18 
.91 

.82 

.68 
.82 






0.40 
2.08 
1.29 

.84 

""'."64" 
.59 
.62 

.64 

""."61" 

"".'si* 

1.12 


"3."90" 

"i.*9i' 

1.72 

2.38 
1.45 
1.35 

1.00 
1.52 
1.29 
1.10 
.98 

.96 
.87 
.81 
.69 


0.71 

""."TO" 
.60 

.58 
.46 
.46 

"*".*64" 

.57 
1.30 

.82 
1.01 

1.08 
2.71 
1.34 
1.78 
2.11 

'*2.*i2* 

3.14 
2.16 
1.55 

1.41 
3.76 
2.70 
2.59 
2.16 






3 






1.43 
1.49 
1.76 

1 81 






3.42 




4 




-0.20 

- .22 

-*.*7o" 

- .70 

- .71 

- .72 

- .75 
.56 
.52 
.22 










5 


0.60 

.60 
.61 
.62 


2.10 


.23 


1.12 

1.11 
1.08 

'"."82" 


1.84 

""i.*i2" 

1 13 

1.88 
4.16 

2.57 
1.91 
1.73 
1.35 
1.13 

1.84 
2.85 
1.80 
2.26 
1.60 

1.44 
1.42 
1.56 


" "i"i5 


6 


1 10 


7 


1.30 


8... 






.66 


1.70 


9 


.91 
.96 

1.22 
1.98 
2.06 
2.22 


3.36 
2.15 

2.35 
1.58 
1.39 
1.18 
1.23 




1.35 


10 




1.40 




1.11 


11 


.42 
.42 
.41 
.41 
.38 

.30 




2.28 


95 


12 


1.28 




.87 


13 




1.19 
1.74 


.78 


14 




.42 


.85 


15 


.94 


16 . 


.86 


.40 




1.22 


17 


.05 


1.96 
2.25 
1.16 
1.95 

1.11 
1.08 
1.12 




.84 


.64 


.99 


18 




1.40 
1.35 
1.37 

1.33 
1.49 
1.52 
2.10 


.60 




.81 


19 


.15 
.12 

.11 
.10 
.09 
.09 
.08 

.08 
' .08 
.06 
.05 
.06 






.78 
.78 


.95 


1.30 


20.... 




.80 


2.15 


21 


.60 


.60 
.60 
.54 
.49 

.40 
.36 
.34 
.31 


1.28 


22 


.48 






2.45 


23 






.49 

.78 
.64 

.51 
1.20 


3.81 


24 


.90 








25 


1.60 
1.21 


.96 

.86 
.78 
.64 
.54 
.62 
2.80 




.79 

.69 
.75 
.69 
.63 
.54 
.49 


1.12 

1.06 
.97 
1.11 
1.33 
.98 


1180 


26 


1.96 
1.98 
1.91 


.60 


1.41 
1.50 
1.41 


2.68 


27 




28 


1.35 


29 


1.2S 


30 










31 





































Daily discharge, in second-feet, at station No. 52 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day, 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1... . 


78.0 
76.2 
68.1 
173.0 
128.0 

92.4 
64.5 
62.7 
60.9 
45.6 


6.8 
11.0 
16.4 
24.0 
34.0 

47.2 
93.5 
58.4 
42.6 
30.5 


12.8 
11.3 
10.7 
6.4 
6.6 

6.6 
6.4 
10.7 
14.3 
10.7 


11... . 


35.2 
27.0 
19.8 
14.3 
14.3 

14.0 
14.0 
13.7 
13.7 
11.6 


21.0 
14.3 
23.0 
20.6 
24.0 

27.0 
37.0 
50.4 
70.8 
93.5 


9.7 

56.0 

164.0 

354.0 

623.0 

111.0 
132.0 
118.0 
139.0 
139.0 


21 


9.4 
8.4 
7.6 
6.8 
6.1 

5.6 
5.1 
4.8 
4.5 
4.3 
_\0 


528.0 
337.0 
365.0 
314.6 
88.0 

44.0 
22.0 
17.8 
17.0 
14.0 


55.2 


2.. . 


12... . 


22 


17.0 


3 


13 


23 


15.5 


4 


14 

15 


24 


55.2 


5.... 


25 


40.5 


6 


16 


26 


37.0 


7 


17 


27 


21.0 


8..... 


18 


28 


37.0 


9 


19 


29 


40.5 


10...., -.. 


20 


30 


37.0 






31 


31.0 



ISLAND OF HAWAII. 



30a 



Daily discharge, in second-feet, at station No. 52 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


6.00 
6.00 
6.00 
6.00 
6.40 

6.40 
6.60 
6.80 
5.80 
4.80 

3.80 
3.80 
3.60 
3.60 
3.30 

2.50 
2.00 
2.00 
1.40 
1.20 

1.20 
1.10 
1.10 
1.10 
1.00 

1.00 
1.00 
.90 
.90 
.90 
.90 


0.20 
.20 
.20 
.20 
.20 

.20 
.10 
.10 
.10 
.10 

.10 

.10 

5.80 

5.10 

1.90 

1.40 
.90 
.50 
.30 

2.00 

250.00 
400.00 
500.00 
300.00 
52.00 

26.00 
20.00 
20.00 
20.00 


30.00 
41.00 
25.00 
14.00 
12.00 

8.00 
12.00 
13.00 
14.00 
16.00 

27.00 
86.00 
95.00 
114.00 
104.00 

94.00 
84.00 
118. 00 
24.00 
83.00 

21.00 
20.00 
22.00 
19.00 
16.00 

13.00 

10.00 

7.20 

5.40 

6.80 

211.00 


100.00 
50.00 
39.00 
43.00 
65.00 

70.00 
500.00 
400.00 
333.00 
105.00 

132.00 
50.00 
36.00 
25.00 
27.00 

30.00 
34.00 
37.00 
34.00 
35.00 

32.00 
41.00 
45.00 
21.00 
50.00 

84.00 
86.00 
79.00 
40.00 
50.00 


50.00 
60.00 
60.00 
80.00 
99.00 

80.00 
50.00 
40.00 
40.00 
37.00 

34.00 
30.00 
25.00 
20.00 
15.00 

12.00 
9.20 
6.40 
6.00 
5.50 

5.00 
4.50 
9.20 
14.00 
10.20 

6.40 
6.20 
6.10 
5.00 
4.00 
4.00 


3.80 
3.00 
2.50 
2.50 
2.00 

1.90 
4.80 
7.60 
7.00 
6.40 

5.70 

5.00 
4.40 
3.80 
3.60 

3.50 
5.00 
7.00 
9.00 
11.00 

15.00 
19.00 
24.00 
29.00 
33.00 

37.00 
44.00 
37.00 
30.00 
24.00 


17.00 
21.00 
90.00 
50.00 
22.00 

21.00 
20.00 
16.00 
12.00 
10.00 

120.00 
60.00 
25.00 
63.00 
40.00 

20.00 
12.00 
11.00 
10.00 
10.00 

10.00 
10.00 
10.00 
10.00 
10.00 

8.20 
9.90 
8.20 
7.00 
5.40 
4.70 


4.10 

3.50 

96.00 

30.00 

12.00 

9.50 
7.00 
6.20 
6.80 
7.00 

6.80 
6.60 
8^0 
11.00 
22.00 

7.00 

7.00 

11.00 

15.00 

10.00 

6.40 
5.60 
4.70 
10.00 
7.00 

4.95 
26.00 
20.00 
15.00 
10.00 
15.00 


200.00 
250.00 
463. 00 
540.00 
79.00 

61.00 
136.00 
40.00 
34.00 
26.00 

17.00 
45.00 
30.00 
21.00 
16.00 

15.00 
13.00 
11.00 
8.20 
7.20 

6.40 
6.40 
5.40 
4.70 
4.10 

3.50 
3.10 
2.90 
2.50 
4.00 


6.00 
8.70 
8.60 
8.40 
6.40 

6.10 
4.30 
4.30 
5.60 
7.00 

5.90 
31.00 
12.00 
17.00 
18.00 

20.00 
193.00 
35.00 
10.50 
22.00 

22.00 
22.00 
283.00 
106.00 
48.00 

38.00 
424.00 
191.00 
171.00 
106.00 
100.00 


250.00 
200.00 
346.00 
100.00 
72.00 

50.00 
22.00 
22.00 
76.00 
531.00 

167.00 
79.00 
62.00 
34.00 
22.00 

72.00 
221.00 

69.00 
119.00 

52.00 

39.00 
38.00 
48.00 
35.00 
22.00 

19.00 
16.00 
21.00 
32.00 
16.00 


150.00 


2 


200.00 


3 


70.00 


4 


40.00 


5 


23.00 


6 


21.00 


7 


31.00 


8 


60.00 


9 


34.00 


10 


21.00 


11 


15.00 


12 


13.00 


13 


10.00 


14 


13.00 


15 


15.00 


16 


27.00 


17 


17.00 


18 


11.00 


19 


31.00 


20 


105.00 


21 


30.00 


22 


147.00 


23 


440.00 


24 


200.00 


25 


69.00 


26 


187.00 


27 


100.00 


28 


34.00 


29 


30.00 


30 


20.00 


31 


10.00 







Note. 
tiarge fc 
rainfall at the camp near station No. 50. 



-Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 



Monthly discharge at station No. 52 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May 



discharge 
in second- 
feet. 



35.30 
83.10 
75.10 



3.20 
55.40 
40.80 
89.10 
26.90 



Run-off 
(total in 
acre-feet). 



2,180 
4,940 
4,630 



197 
3,190 
2,510 
5,300 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



13.00 
24.00 
13.30 
68.50 
62.60 
95.10 
70.10 



46.60 



774 
1,480 

818 
4,080 
3,850 
5,660 
4,310 



304 



WATER RESOURCES OF HAWAII, 1912. 



Discharge measurements at station No. S3 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Feet. 
0.47 
.38 


Sec.-ft. 

0.01 




Nov. 7 


Feet. 
0.47 

.48 


Sec.-ft. 
0.04 


Sept .28 


Dec. 11 


.03 









Note.— Bed of stream of sand and gravel; shifting. One channel at all stages. 

Daily gage height, in feet, at station No. S3 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.20 


0.48 
.53 












2 






0.52 
.51 
.41 
.45 

.42 
.46 






0.40 
.99 
.59 
.54 

""."53" 
.48 
.50 
.52 

""\*49* 

""."52" 

.64 




0.44 






3 






6.59 
.82 
.61 

.66 










4 




If 

(o) 
(a) 
0.55 
.45 
.40 

.40 
.40 








"a si" 

.53 
.59 

.48 
.45 

.50 
.52 
.50 
.50 
.44 

.48 
.45 
.44 
.41 


.44 
.42 

.41 
.40 
.40 

"\*43* 

.41 
.48 
.43 
.49 

.43 

"*\*50* 
.54 
.69 

....... 

"*"."52" 
.50 

.54 
"\"66* 






5 


0.44 

.44 
.44 
.45 


1.61 


.21 


.58 

.51 
.50 

**\*50" 


0.52 

""."44' 
.46 
.64 

"756* 
.55 
.50 

.48 

.81 
.92 
.70 
.69 
.60 

.55 
.58 
.64 

""."52" 

.52 
.52 
.64 
.61 
.54 


0.60 


6 


.53 


7 


.55 


8 






.30 


.61 


9 


.56 
.52 

.79 
1.30 
.90 
.99 






.60 


10 '.. 




.62 

.61 
.60 
.58 
.50 
.54 


.56 




.52 


11 


.40 
.40 
.38 
.38 
.35 

.35 




.70 


.48 


12 


.55 




.45 


13 




.50 
.61 


.40 


14 




.34 


.41 


15 


.46 


16 


.41 


.35 




.56 


17 


.66 

.98 

.. .76 




.78 


.44 


.43 


18 




.56 
.60 
.54 

.56 
.64 
.63 
.64 


.41 




.47 


19 . 


(•) 

(a) 

(a) 
(«) 
(") 
(«) 
(a) 

(o) 

(°) 
(a) 

(«) 
(a) 






.70 
.74 


.55 


58 


20 




.74 

.66 
.64 
.68 




.31 


.80 


21 


.42 


42 
.43 
.41 
.40 

.40 
.39 
.38 
.39 


.54 


22 


.41 






.88 


23 






.40 
.40 
.40 

.39 
.49 




24 


.43 






.95 


25 


.63 
.42 


.55 

.54 
.49 
.45 

.49 




.50 

.50 
.51 
.47 
.49 
.45 
.40 


.56 


26 


.73 
.73 
.73 


.38 
"*\"30" 


.58 
.61 

.58 


.89 


27 




28 


.50 


29 


.50 


30 










31 







































a Channel dry. 

Daily discharge, in second-feet, at station No. S3 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 




0.05 
.05 
.05 
.10 
.10 

.10 
.15 
.18 
.13 
.10 


0.01 
.01 
.01 
.01 
.03 

.03 
.05 
.05 
.10 
.05 


11 


0.10 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 

.05 


0.10 
.05 
.16 
.10 
.10 

.10 
.10 
.10 
.12 
.14 


0.05 
.15 
.30 
.48 
.62 

. .42 
.50 
.42 
.53 
.53 


21 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


0.13 
.12 
.12 
.11 
.11 

.05 
.05 
.05 
.05 
.03 


0.35 


2 




12 


22 


.15 


3 . 


0.35 
.30 

.26 

.22 
.18 
.15 
.12 
.10 


13 


23 


.15 


4. 


14 


24 


.35 


5.. 


15 


25 


.28 


6 


16 


26 


. 26 


7.... 


17 


27 


.23 


8.... 


18 


28 


.23 


9 


19 


29 


.28 


10 


20 


30 


.28 






31 


.28 









ISLAND OF HAWAII. 



305 



Daily discharge, in second-feet, at station No. 53 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 






0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.10 
.05 

.35 
1.10 
.50 
.65 
.40 

.25 
.15 
.60 
.30 
.25 

.15 
.15 
.20 
.10 
.05 

.05 
.05 
.05 
.05 
.05 
.25 


0.15 
.10 
.10 
.40 
.10 

.15 
.35 
.30 
.20 
.10 

.10 
.10 
.10 
.05 
.05 

.10 
.10 
.10 
.10 
.05 

.05 
.15 
.15 
.15 
.20 

.25 
.25 
.25 
.20 






0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.20 
.10 
.10 
.10 
.10 

.20 
.30 
.20 
.20 
.25 

.20 
.10 
.10 
.20 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


0.05 
.10 
.65 
.10 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.15 

.10 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.15 
.10 
.10 
.05 
.10 


0.40 
.50 
1.00 
1.30 
.05 

.05 
.10 
.10 
.10 

.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 


""6*05* 

.05 
.20 

"\*26" 

"""."65" 
.05 

.05 
"\*"5" 


0.05 
.10 
.20 
.10 
.05 

.05 
.05 
.10 
.15 
.40 

.20 
.10 
.05 
.05 
.05 

.35 
.60 
.20 
.20 
.10 

.05 
.10 
.15 
.10 
.05 

.05 
.05 
.15 
.10 
.05 


0.40 


2 










.90 


3 










;20 


4 










.10 


5 






1.S5 




.10 


6 






.10 


7 










.10 


8 










.10 


9 










.10 


10 






.05 




.05 


11 






.05 


12 






.05 




.05 


13 






.05 


14 . 










.05 


15 










.05 


16. . . 










.10 


17 










.05 












.05 


19 










.10 












.35 


21 










.05 


22 










45 


23 










1.50 


24 










.55 


25 




0.10 






.10 


26 






0.05 
.10 
.05 


.50 


27 






.30 


28 






.05 


29 






.05 


30 










.05 


31 












.05 























Note.— Daily discharge determined from poorly denned rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
near station No. 50. 

Monthly discharge at station No. 53 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 3-31 

November 

December....... 

1912. 

January 

February 

March 

April 

May 



discharge 
in second- 
feet. 



0.10 
.10 
.23 



.03 
.05 
.20 
.15 
.04 



Run-off 
(total in 
acre-feet). 



5.52 
5.75 
14.30 



1.84 
2.88 
12.30 
8.93 
2.46 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.02 
.10 
.09 
.16 
.05 
.13 
.22 



.10 



Run-off 
(total in 
acre-feet). 



1.19 
6.15 
5.53 
9.52 
3.07 
7.74 
13.50 



75.10 



Discharge measurements at station No. 54 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


DiS" 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Feet. 
0.81 
.67 


Sec.JL 
0.60 
.09 


Nov. 7... 


Feet. 
0.83 
.83 


Sec.-ft. 
0.60 


Sept. 28 


Dec. 11 


.75 









Note. — Bed of stream of gravel and bedrock; only slightly shifting. One channel at all stages. 
14694°— wsp 336—14 20 



306 WATEK RESOURCES OF HAWAII, 1912. 

Daily gage height, in feet, at station No. 54 at 2,700-foot level, near Eilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.61 


0.80 

.88 












2 






0.92 
.90 

.82 
.78 

.75 
.81 

"".89 
.85 

1.04 
1.10 
1.29 






0.66 

1.70 

.95 

.84 

"*.*82* 
.75 
.80 
.88 

*"\"80" 

"\*85" 
1.04 




0.84 






3 ...... 






0.99 

1.17 

.98 

.98 










4 




(«) 
<«> 

& 

0.86 
.66 
.60 








"i."6i" 

1.00 

1.16 

.91 

.89 

.80 
.99 
.91 
.90 
.81 

.89 
.84 
.82 

.77 


.84 
.80 

.78 
.75 
.74 

"*.*83" 

.80 
.93 
.88 
.92 

.90 

"".'97" 
1.06 
1.32 

"i."27* 

"i.'io" 

.90 

.98 

"i.*22" 






5 


0.69 

.69 
.69 
.70 


1.32 


.59 
"\*76" 


.92 

.83 

.85 

""".*80" 


0.97 

**".*82* 

.86 

1.12 

"T68* 

1.06 

.92 

.84 

1.22 
1.56 
1.08 
1.12 
.98 

.93 

.94 

1.00 

"\*88" 

.85 

.82 

1.02 

1.02 

.89 


0.90 


6 

7 

8 


.88 

.90 

1.00 


9 


.99 


10 




1.09 

1.05 
93 
.95 

.89 


.98 
"*2.*29* 

.61 




.89 


11 


.61 
.61 
.60 

.50 

.48 





1.19 


.81 


12 


.80 


13 


"*\*82" 
.76 


.84 
1.04 


.80 


14... 


.80 


15... 


.86 


16. 


.98 


17.. 


1.04 

1.39 

.99 

1.14 

.92 
.91 
.93 

"\*86" 

.84 
.79 
.74 
.72 
.79 




.81 


.79 


.84 


18.. 




.95 
.92 
.89 

.91 

.99 

.99 

1.11 






.84 


19 


.44 
.44 

.44 
.42 
.41 
.41 
.40 

.40 
.41 
.38 

.35 


***.*95* 

.78 


.60 


""."80" 


.75 
.74 


.90 


1.04 


20. 


1.26 


21 .. 


.75 


.75 
.79 
.74 
.71 

.68 
.64 
.62 
.62 


.92 


22 


.72 






1.35 


23 






.70 
.71 
.70 

.65 

.88 




24 .. 


.75 






1.58 


25 




.81 

.81 
.82 
.79 
.80 
.75 
.71 


.98 


26... 


1.19 
1.01 
.99 


.70 
'"."68" 


.98 

1.08 

.98 


1.45 


27 




28... 


.90 


29...... 


.91 


30 










31... 







































a Channel dry. 

Daily discharge, in second-feet, at station No. 54 at 2,700-foot level, near Silo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 




0.2 

.4 

.7 

1.3 

2.3 

3.5 

4.7 
5.4 
3.7 
2.4 


0.2 
.1 
.1 
.1 
.1 

.1 
.1 
.3 
.3 
.3 


11 


2.0 
1.2 

.8 
.4 
.4 

.5 
.5 
.5 
.5 

.4 


1.3 
.7 
2.9 
1.3 
1.3 

1.3 
2.0 
2.6 
3.7 

4.7 


0.2 

1.3 

4.7 

10.0 

21.0 

10.6 
11.5 
10.6 
12.4 
12.4 


21 


0.4 
.3 
.3 
.3 
.2 

.2 
.2 
.1 
.1 
.1 
.1 


4.5 
4.3 
4.1 
3.9 
3.7 

1.3 

.7 
.5 
.4 
.2 


2.7 


2........... 




12 


22 


.9 


3 


17.0 
13.8 
11.2 

9.2 
7.2 
5.4 
3.9 
2.7 


13 


23 


.9 


4 


14 


24... 


2.7 


5 


15 


25 


2.7 


6... 


16 


26 


2.4 


7 


17 


27 


2.4 


8...1 ... 


18 


28 


2.0 


9...; 


19 


29 


2.7 


10 


20 


30 


2.7 






31 


2.7 









ISLAND OF HAW An. 



307 



Daily discharge, in second-feet, at station No. 54 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


j 




(a) 
(a) 
(a) 
(a) 
(a) 

(a) 

¥l 
(») 
(<*) 

(a) 

(a) 

(a) 

1.00 
.40 
.10 

.10 
.10 
.10 
.10 
9.00 

20.00 
40.00 
50.00 
35.00 
2.00 

5.40 
3.00 
2.00 
2.00 


1.80 

1.60 

1.30 

.70 

.40 

.30 
.60 
.90 
1.20 
.90 

3.50 
4.70 
9.70 
10.30 
8.00 

5.80 
3.50 
12.70 
2.60 
5.70 

1.60 
1.40 
1.70 
1.40 
1.00 

.80 
.50 
.30 
.30 
.50 
16.00 


7.00 
4.00 
2.60 
6.40 
2.40 

2.40 
12.00 
11.00 
10.00 

4.50 

3.70 
1.70 
2.00 
1.10 
1.20 

1.50 
1.70 
2.00 
1.60 
1.20 

1.40 
2.60 
2.60 
4.90 
6.00 

7.00 
2.90 
2.60 
2.00 
3.00 


3.00 
4.00 
5.00 
8.00 
10.60 

8.00 
5.00 
4.00 
3.00 
2.40 

3.00 

52.50 

20 00 

5.00 

1.00 

.50 
.30 
.30 
.30 
.30 

.30 
.30 
.30 
.30 
.30 

.20 
.20 
.20 
.20 
.20 
.20 


0.20 
.20 
.20 
.20 
.20 

.20 
.20 
.20 
.20 
.30 

.40 
.50 
60 
.70 
.50 

.35 
.40 
.40 
.40 
.50 

.80 
1.10 
1.40 
1.70 
2.00 

2.40 
4.30 
2.40 
2.00 
2.00 


0.50 

1.10 

20.00 

10.00 

1.60 

.70 
.90 
.70 
.50 
.50 

6.90 
3.00 
.80 
3.50 
1.00 

.80 
.60 
.50 
.40 
.30 

.30 
.40 
.50 
.60 
.60 

.60 
.70 
.50 
.50 
.40 
.20 


0.60 

1.00 

25.00 

2.00 

.80 

.80 
.70 
.40 
.50 
1.10 

.80 
.50 
.70 
.90 
3.50 

.50 
.50 
.90 
1.30 
.40 

.40 
.30 
.20 
.20 
.20 

.10 
1.10 
1.00 
.80 
.50 
.30 


2.50 
3.00 
6.00 
10.00 
2.90 

2.70 
6.20 
1.40 
1.20 
.80 

.50 
2.60 
1.40 
1.30 

.60 

1.20 

.80 
.70 
.40 
.30 

.30 
.50 
.30 
.20 
.20 

.20 
.20 
.20 
.20 
.50 


0.60 
.80 
.80 
.80 
.50 

.'50 
.30 
.30 
.50 

.70 

.50 
1.70 
1.10 
1.60 
1.50 

1.30 

4.00 
2.30 
3.90 
10.60 

10.00 
9.20 

20.00 
4.70 
1.30 

2.50 

50.00 

40.00 

25.00 

7.80 

5.00 


10.00 
15.00 
25.00 
14.00 
2.30 

1.50 

.70 

1.00 

5.20 

12.00 

11.00 

4.30 

3.90 

1.60 

.80 

7.80 
19.40 
4.30 
5.20 
2.50 

1.70 
1.90 
2.70 
1.90 
1.10 

.90 

.70 

3.10 

3.10 

1.20 


12.00 


2 




18.00 


3 




14.00 


4 




8.00 


5 


0.20 

.20 
.20 
.20 


1.30 


6 


1.10 


7 


1.30 


8 


2.70 


9 


2.60 


10 




1.20 


11 




.61 


12 




.50 


13 




.50 






.50 


15 




1.00 


16 




2.40 






.80 


18 




.80 






3.50 


20 




8.90 


21 




1.60 


22 




11.50 


23 




40.00 






20.20 


25 




2.40 


26 




15.00 






20.00 


28 




1.30 






1.40 


30 




1.00 








1.00 











a Channel dry. 

Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 54 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



Month. 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



1911. 

October 3-31 

November 

December 

1912 

January 

February 

March 

April 

May 



2.74 
2.33 



158.0 
139,0 
241.0 



.10 
5.87 
3.28 
3.83 

4.48 



6.15 
338.00 
202 
228 
275 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



0.90 
1.92 
1.55 
1.64 
6.77 
5.53 
5.39 



3.43 



53.60 

118 
95.30 
97.80 

416.00 

329 

331 



2,490.00 



308 WATER RESOURCES OF HAWAII, 1912. 

Discharge measurements at station No. 55 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Feet. 
1.11 

.97 


Sec.-ft. 
0.21 



Nov. 7 


Feet. 
1.18 
1.16 


j. 28 


Sept. 28 


Dec. 11 


.29 









Note.— Bed of stream of gravel and cobbles; shifting. One channel at all stages. 

Daily gage height, in feet, at station No. 55 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1. 












0.90 


1.11 
1.22 












2 






1.25 
1.20 
1.11 
1.16 

1.08 
1.14 






1.02 
1.62 
1.28 
1.20 

"i."i2* 

1.09 
1.09 
1.18 

"i.'io" 
"i.'ii" 

1.26 
1.10 

"i.'ii" 




1.14 






3 






1.26 
1.44 
1.26 

1.18 










4 




(«) 
(a) 

(a) 

(a) 

(a) 
(a) 
1.12 
1.05 
.98 

.95 
.91 








"i."35* 

1.32 
1.45 
1.26 
1.21 

1.10 
1.29 
1.29 
1.27 
1.18 

1.21 
1.19 
1.17 
1.11 


1.12 
1.08 

1.07 
1.03 
1.04 

"i.'io" 

1.07 
1.22 
1.16 
1.22 

1.19 

"i.26" 
1.36 
1.56 

"i'.h\ 

"i."43* 
1.27 

1.31 
"i.'48" 






5 


1.00 

1.00 
1.00 
1.01 


1.48 


.84 


1.28 

1.16 
1.20 

"i.*ii" 


1.31 

"i.*i7" 

1.18 
1.42 

"i.'ii" 

1.40 
1.26 
1.19 

1.51 
1.65 
1.42 
1.46 
1.31 

1.29 
1.29 
1.38 

"i.26" 

1.18 
1.15 
1.36 
1.35 
1.20 


1.26 


6 


1.20 


7 


1.20 


8 






.89 


1.30 


9 


1.21 
1.15 

1.36 
1.40 
1.51 
1.61 






1.25 


10 




1.40 

1.35 
1.51 
1.15 
1.19 
1.19 


1.05 




1.20 


11 


.94 
.94 
.92 
.92 
.92 

.92 




1.49 


1.16 


12 


i.oi 




1.10 


13 




1.19 
1.34 


1.09 


14 




.95 


1.10 


15 


1.14 


16 


1.02 


1.00 


"i.'i3" 


1.25 


17 


1.34 
1.69 
1.26 
1.39 

1.22 
1.03 
1.24 




1.04 


18 




1.26 
1.26 
1.25 

1.23 
1.41 
1.39 
1.37 


.99 




1.11 


19 


.92 
.92 

.92 
.91 
.90 
.90 
.89 

.89 
.89 
.86 

.86 






1.10 
1.09 


1.30 


20 




1.00 


1.52 


21 


1.08 


1.10 
1.11 
1.08 
1.04 

1.01 
1.00 
.99 
.99 


1.30 


22... 


1.00 






1.64 


23 






1.04 
1.05 
1.02 

1.01 

1.11 




24 


1.10 






1.64 


25 


1.28 
1.10 


.88 

1.19 
1.12 
1.09 

1.16 




1.15 

1.13 
1.12 
1.09 
1.10 
1.05 
1.02 


1.31 


26 


1.43 
1.39 
1.34 


1.00 
""."98" 


1.21 
1.31 
1.21 


1.55 


27 




28 


1.21 




1.20 


30 
























































a 


Channe 


Idry. 















Daily discharge, in second-feet, at station No. 55 at 2,700-foot level, near Hilo, Hawaii t 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. v 


Oct. 


Nov. 


Dec. 


1 




0.01 
.05 
.10 
.46 

1.00 

1.75 
3.40 
4.18 
2.64 
1.45 


0.05 

'.01 

.01 

.01 

.01 

.02 
.02 
.34 
.58 
.34 


11 


1.45 
.70 
.40 
.10 
.10 

.10 
.10 
.10 
.10 

.08 


0.70 
.34 
2.05 
1.00 
1.00 

1.00 
1.45 
1.98 
2.86 
3.96 


0.10 
1.15 
3.52 
6.80 
11.60 

..02 
.05 
.03 

.08 
.08 


21 


0.05 
.01 
.01 
.01 
.01 

.01 
.01 
.01 
.01 
.01 
.01 


3.40 
2.64 
2.05 
1.60 
1.30 

.58 
.22 
.16 
.10 
.08 


0.02 


2 




12 


22 


.02 


3 


9.20 
8.00 
6.80 

5.60 
4.40 
3.40 
2.42 
1.90 


13 


23 


.02 


4.... 


14 


24 


.02 


5 


15 


25 


.02 


6... 


16 


26 


.02 


7... 


17 


27 


.02 


8 


18 


28 


.01 


9 


19 


29 


.02 


10.. 


20 


30 


.02 






31 


.02 









ISLAND OP HAWAII. 



309 



Daily discharge, in second-feet, at station No. 55 at 2,700-foot level, near Eilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(°) 

(•) 
(a) 

0.20 
.10 
.10 

.10 
.10 
.10 
.10 
.30 

2.00 
6.00 
11.00 
5.00 
1.90 

.10 
.10 
.10 
.10 


1.00 
1.40 
.70 
.20 
.40 

.10 
.30 
.60 
.80 
.40 

3.50 
4.40 
7.00 
9.40 
7.30 

5.20 
3.10 
11.00 
1.60 
4.20 

1.00 
1.10 
1.30 
1.10 
.80 

.60 
.20 
.10 
.10 
.50 
8.00 


5.00 
3.00 
1.60 
5.40 
1.60 

.60 
10.00 
9.00 
8.00 
4.40 

3.30 
7.00 
.40 
.60 
.60 

.50 
.80 
1.60 
1.60 
1.40 

1.10 
4.60 
4.20 
3.70 
4.40 

5.10 
4.20 
3.10 
1.00 
1.00 


1.00 
2.00 
3.00 
4.00 
6.30 

5.00 
1.00 
.50 
.20 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 
.10 


0.80 

2.40 

.80 


0.20 
1.00 
5.00 
3.00 
1.90 

.50 
.70 
.40 
.20 
.20 

6.60 
2.00 

.60 
3.10 

.60 

.40 
.30 
.20 
.10 
.10 

.10 
.10 
.20 
.30 
.40 

.30 
.20 
.10 
.10 
.10 
.10 


0.10 

.20 

9.70 

1.90 

.70 

.40 
.20 
.10 
.10 
.60 

.40 
.10 
.20 
.30 
1.60 

.10 
.20 
.30 
.50 
.30 

.10 
.10 
.10 
.10 
.10 

.20 
.20 
.20 
.10 
.10 
.20 


2.00 
3.00 
5.00 
7.00 
3.30 

2.60 

5.60 

1.60 

.80 

.50 

.10 
2.00 
2.00 
1.70 

.60 

.80 
.60 
.50 
.20 
.20 

.10 
.20 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 


0.20 

.30 

.40 

.20 

• .10 

.10 
.10 
.10 
.10 
.10 

.10 
1.00 

.50 
1.00 

.80 

.60 
2.00 
1.60 
3.50 
8.20 

7.60 
7.00 
10.00 
5.10 
1.70 

2.40 
11.00 
10.00 
8.00 
6.30 
5.65 


5.00 
5.00 
6.00 
4.00 
2.40 

.50 

.50 

.60 

4.90 

9.00 

7.00 
4.60 
4.40 
1.60 
.60 

7.00 
10.00 
4.90 
5.80 
2.40 

2.00 
2.00 
4.00 
2.40 
.70 

.60 

.40 

3.50 

3.30 

.70 


4.00 


2 




8.00 


3 




5.00 


4 




3.00 


5 




1.60 


6 




.70 


7 




.70 


8 




2.20 


9...' 




1.40 


10 




.70 


11 




.50 


12 




.10 


13 




.10 






.10 


15 




.30 


16 




1.40 






.60 


18 




.20 






2.20 


20 




7.30 


21 




2.20 


22 




10.00 


23 




11.00 






10.00 


25 




2.40 


26 




8.00 






4.00 


28 




.80 






.70 


30 




.50 








.50 











a Channel dry. 

Note.— Daily discharge determined from poorly denned rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
near station No. 50. 

Monthly discharge at station No. 55 at 2,700-foot level, near Eilo, Hawaii, for 1911-12. 



Month. 



1911 

October 3-31 

November 

December 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
in second 

feet. 



1.56 
1.45 

.81 



.10 

.94 

2.46 

3.29 

.81 



Run-off 
(total in 
acre-feet). 



89.50 
86.50 
49.80 



6.15 

54. 10 

154.00 

196.00 

49.80 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



Run-off 

(total in 

acre-feet). 



0.30 
.94 
.63 
1.37 
3.09 
3.53 
2.91 



1.70 



17.90 
57.80 
38.70 
81.50 
190.00 
210.00 
179.00 



1,230.00 



310 



WATER RESOURCES OP HAWAII, 1912. 



Discharge measurements at station No. 56 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.) 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Feet. 
0.54 
.40 


Sec.-ft. 




Nov. 7 


Feet. 
0.41 
.46 


Sec.-ft. 

o 


Sept. 28 


Dec. 11 


o 


I 







Note.— Bed of stream of sand and silt; shifting. One channel at all stages. 

Daily gage height, in feet, at station No. 56 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayefi, Selitonott, and Kuznetsorf , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.38 


0.50 
.61 












2 






.62 
.62 
.52 
.52 

.55 

1.84 






0.52 
1.05 
.68 
.64 

"".'55' 
.55 
.57 

.64 

"".'48" 

""".to 

.70 




0.44 






3 






.72 
.52 
.68 

.68 










4 




(a) 
(a) 

"(a)" 

(°) 
(a) 

(°) 

(a) 
(a) 

(a) 
(°) 








"6.65" 

.70 
.73 
.67 
.65 

.58 
.69 
.67 
.69 
.54 

.55 
.52 
.51 
.51 


.42 

.42 

.42 

.41 

.41 

------- 

.40 
.45 
.41 
.42 

.44 

'"."52' 
.53 
.63 

""".66" 

'"".'54* 
.43 

.50 

".6i" 






5 


0.51 

.51 
.52 

.54 


0.92 


.30 


.65 

.51 

.58 

"".'55' 


0.52 

...... 

.44 
.60 

"*.*55" 

.54 
.49 
.44 

.69 
.72 
.61 
.58 
.51 

.51 
.51 
.54 

"*\"46" 

.45 
.45 
.57 
.55 

.47 


0.47 


6 


.48 


7 


.52 


8 






.30 


.52 


9 


.64 
.61 

.72 
.69 
.89 
.99 






.50 


10 




.70 

.68 
.63 
.65 
.61 
.62 


.65 




.49 


11 


(a) 

(°) 

(°) 

(a) 
(a) 




.79 


.44 


12 


.61 




.43 


13. 




.59 
.70 


.42 


14 




.46 


.44 


15 


.48 


16 


.56 


.50 




.53 


17 


.66 

1.03 

.71 

.72 

.62 
.61 

.64 




.65 


.54 


.49 


18 




.64 
.68 
.61 

.69 
.70 
.68 
.70 


(a) 




.45 


19 


(a) 
(a) 

(a) 

(aj 

(«) 

(a) 

(°) 
(a) 

(°) 
(°) 


""".65' 




.55 

.54 


.62 


.54 


20 




.51 


.62 


21 


.54 


.50 
.50 
.50 
.50 

.50 
.42 
.40 
.40 


.51 


22 


.52 






.64 


23 






.54 
.51 
.52 

.51 

.58 




24 


.53 






.67 


25 .'. 




.64 

.62 
.60 
.54 
.52 
.59 




.60 

.59 
.58 
.57 
.57 
.55 
.53 


.53 


26 


.79 
.73 
.70 


.45 
"".'46" 


.58 
.68 

.58 


1.10 


27 




28 


.50 




.50 


30 

















































a Channel dry. 

Daily discharge, in second-feet, at station No. 56 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 




0.10 
.14 
.18 
.24 
.32 

.40 
.60 
.65 
.52 
.36 


(a) 
(°) 

N 

(0) 

(a) 

li 

0.01 


11 


0.18 
.12 
.05 
.01 
.02 

.05 
.06 
.08 
.10 
.10 


0.20 
.12 
.56 
.28 
.24 

.24 
.32 
.40 

.44 
.52 


0.01 

.20 

.60 

1.10 

3.38 

1.00 
1.22 
1.05 
1.22 
1.22 


21 


0.10 
.10 
.10 
.10 
.10 

.10 
.02 
.02 
.02 
.02 
.02 


0.44 
.40 
.36 
.32 

.28 

.03 
.01 
.01 
.01 

.01 


0.40 


2.. 




12 


22 


.28 


3... 




13 


23 


.20 


4 




14 


24 


.40 


5 




15 


25 


.10 


6 




16 


26 


.10 


7 




17 


27 


.05 


8... 




18 


28 


.05 


9.... 


0.36 
.24 


19 


29 


.10 


10.... 


20 


30 


.10 






31 


.10 









a Channel dry. 



ISLAND OP HAWAII. 



311 



Daily discharge, in second-feet, at station No. 56 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 






(a) 
(a) 
a) 
la) 
(a) 

(») 
(a) 

h 

y\ 

(a) 

n 

a 
(a) 

n 

n 

(a) 
(a) 
0.40 

1.20 
5.00 
7.50 
1.50 
.50 

.20 
.10 
.10 
.10 


0.20 
.30 
.30 
.20 
.20 

.10 

7.30 

4.00 

.40 

.20 

.70 

.60 

1.60 

2.20 

1.60 

1.00 
.40 

2.50 
.60 
.70 

.30 
.20 
.40 
.40 
.40 

.30 
.20 
.10 
.10 
.20 
3.50 


1.50 
1.00 
.70 
.60 
.50 

.50 
4.00 
3.00 
2.50 

.60 

.30 
.30 
.40 
.20 
.30 

.40 
.60 
.40 
.50 
.20 

.60 
.60 
.50 
.60 
.80 

1.00 
.80 
.60 
.50 
.40 






0.20 
.20 
.60 
.50 
.40 

.30 
.20 
.20 
.10 
.10 

1.00 
.50 
.20 
.60 
.50 

.50 
.40 
.30 
.10 
.10 

.10 
.10 
.20 
.20 
.20 

.20 
.20 
.10 
.10 
.10 
.10 


0.10 
.10 

2.60 
.50 
.40 

.20 
.10 
.10 
.10 
.40 

.30 
.30 
.30 
.20 
.60 

.20 
.10 
.20 
.30 
.20 

.10 
.10 
.10 
.10 
.10 

.10 
.20 
.20 
.10 
.10 
.10 


1.00 
2.00 
3.00 
5.00 
.40 

.60 
.70 
.50 
.40 
.30 

.20 
.60 
.50 
.60 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.20 






















































1.80 










g 










7 














8' 


0.10 












9 








0.20 




10 




.40 






11 










12 




.20 






.io 

.10 




13 
















15 














16 




.10 




' "o.'io" 

.30 


.60 
.70 
.20 
.20 


0.10 








18 .. -- 


















.10 


20 








.30 


21 










22 








.20 

"".'io' 


"."io 


.40 


23 














.10 




.50 


25 




.10 


26 






0.20 
.50 
.20 






2.90 












28 




""."26" 


.io 

.10 










30 













































a Channel dry. 

Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp near 
station No. 50. 



Monthly discharge at station No. 56 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 

October 9-31 

November 

December 

1912 

January 

February 

March 

April 

May 



discharge 
in second- 
feet. 



.05 

.57 

1.01 

.84 



Run-off 
(total in 
acre-feet). 



4.11 
17.30 
25.60 



3.07 
32.80 
62.10 
50.00 
18.40 



Month. 



1912— Continued 

June 

July 

August 

September 

October , 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.15 

.28 
.28 
.58 
.50 
.40 
.40 



Run-off 
(total in 
acre-feet). 



17.20 
17.20 
34.50 
30.70 
23.80 
24.60 



323.00 



Discharge measurements at station No. 57 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Feet. 
0.85 

.75 


Sec.-ft. 
0.05 



Nov. 7 


Feet. 
0.88 
.88 


Sec.-ft. 
0.12 


Sept. 28 


Dec. 11 . 


.12 









Note. — Bed of stream of sand and silt; shifting. One channel at all stages. 



312 WATER RESOURCES OF HAWAII, 1912. 

Daily gage height.,, in feet, at station No. 57 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, BelayefE, Selitonott, and Kuznetsoff, observers.] 



• Day. '*■ 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


I...... 












0.70 


0.85 
.93 












2.... 






0.80 
.90 
.86 
.81 

.80 
.90 






0.80 

1.20 

.93 

.91 

'"".*88" 
.82 
.88 
.89 

*".*84" 

"""."89" 
.92 




0.86 






3..:... 






0.88 

1.10 

.91 

.91 










4...w 




"W 

(») 

(a) 
(a) 
0.89 
.79 
.74 

.72 
.71 








""6." 97" 

.95 

1.00 

.91 

.88 

.81 
.91 
.88 

.87 
.89 


.84 
.82 

.82 
.80 
.80 

'""."83" 

.81 
.90 
.86 
.90 

.90 

""."93" 

.99 

1.12 

""i.'os" 
"i.'oi" 

.90 
.90 

"i.'oo* 






5 


0. 75 

.75 
.75 

.78 


1.20 


.61 


.95 

.88 
.90 

""."82" 


0.93 

"""*88" 

.90 

1.00 

"T62" 

1.00 

.93 

.90 

1.08 
1.21 
1.02 
1.03 
.95 

.94 
.93 

.98 

""'."96" 

.90 
.89 
.98 
.97 
.91 


0.90 


6 


.90 


7 


.90 


8. . . . . 






.64 


.91 


9 ;........ 


.9i 

.82 

1.01 
1.01 
1.11 
1.21 






.91 


10.... 




.96 

.98 
.91 
.91 
.89 
.90 


.81 




.90 


11 


.71 
.71 
.70 
.70 
.68 

.60 




1.02 


.88 


12 


.80 




.85 


13 




.90 
.98 


.82 


14 




.75 


.85 


16 


.86 


16....... 


.76 


.77 




.91 


17 


.77 

1.21 

.94 

.97 

.91 
.89 
.91 




.84 


.83 


.87 

.84 
.82 


.88 


18 




.5i 

.97 
.91 

.94 

1.00 

.97 

.98 


.81 




.88 


19 


(a) 

00 

(a) 
(o) 
(a) 

h) 

(a) 

(a) 
(«) 
(«) 
(a) 

(a 






.82 
.81 


.90 


.95 


20 




.76 


1.18 


21 


.82 


.82 
.83 
.81 
.80 

.80 
.78 

.74 
.72 


.96 


22 


.78 






1.29 


23.... 






.81 
.94 
.90 

.80 
.84 




24 


.81 






1.24 


25 


.90 
.79 


.91 

.88 
.85 
.79 
.76 
.83 




.88 

.88 
.88 
.81 
.83 
.81 
.80 


.94 


26 


1.07 
.98 
.96 


.78 
"".75 


.81 
.95 
.81 


1.20 


27 




28 


.92 


29 


.90 


30 










31. . . 







































« Channel dry. 

Daily discharge, in second-feet, at station No. 57 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 . . , 




0.03 
.05 
.10 
.11 
.15 

.18 
.40 
.49 
.32 
.20 


0.01 
.01 
.01 
.01 
.02 

.01 
.03 
.05 
.10 
.05 


11 


0.20 
.13 
.10 
.05 
.05 

.05 
.05 
.05 
.05 
.05 


0.12 

.05 
.25 
.15 
.15 

.15 

.20 
.25 
.32 
.40 


0.05 

.22 

.61 

1.08 

2.40 

.35 
.46 
.35 
.46 
.46 


21 


0.05 
.05 
.05 
.05 
.02 

.02 
.02 
.01 
.01 
.01 
.01 


0.40 
.40 
.40 
.38 
.38 

.05 
.02 
.05 
.05 
.01 


0.13 


2..... ,'.■„... 




12 


22 


.10 


3... 




13 


23 


.10 


4 




14 


24 


.10 


5 




15 


25 


.05 


6 




16 


26 


.05 


7 




17 


27 


.05 


8.„ , 




18 


28 


.05 


9 


0.25 

.28 


19 


29 


.05 


10 


20 


30 


.05 






31 


.05 









ISLAND OF HAWAII. 



313 



Daily discharge, in second-feet, at station No. 57 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 


0.05 
.05 
.15 
.10 
.05 

.05 
.IS 
.15 
.15 

.05 

.45 
.45 
.75 
.05 
.95 

.05 
.05 
.05 
.25 
.30 

.15 
.15 
.15 
.15 
.15 

.15 
.10 
.10 
.10 
.10 
.80 


0.30 
.20 
.15 
.70 
.15 

.15 
.90 
.80 
.70 
.30 

.35 
.15 
.15 
.15 
.15 

.15 
.15 
.15 
.30 
.15 

.25 
.40 
.30 
.35 
.60 

.90 
.35 
.30 
.20 
.10 


0.20 
.30 
.40 
.60 

1.00 

.60 
.30 
.10 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


'"6*05" 
.05 

"""."65* 

.05 
.25 
.05 


0.10 
.20 
.40 
.30 
.25 

.15 
.15 

.10 
.05 
.05 

.45 
.30 
.15 
.35 
.20 

.10 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.20 
.15 

.15 
.15 
.05 
.05 
.05 
.05 


0.05 
.05 

1.00 
.20 
.15 

.15 
.15 
.05 
.15 
.15 

.10 
.10 
.10 
.15 
.20 

.10 
.05 
.10 
.15 
.10 

.05 
.05 
.05 
.25 
.15 

.05 
.10 
.10 
.10 
.10 
.10 


0.40 
.50 
.60 
.70 
.30 

.25 
.40 
.15 
.15 
.10 

.05 
.15 
.15 
.10 
.15 

.10 
.10 
.10 
.05 
.05 

.05 
.10 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.10 


0.10 
.10 
.10 
.10 
.05 

.05 
.05 
.05 
.10 
.10 

.05 
.15 
.10 
.15 
.15 

.15 
.50 
.20 
.35 
.75 

.70 
.65 
1.10 
.45 
.15 

.15 

1.40 

1.00 

.70 

.40 

.20 


0.30 
.20 

1.00 
.40 
.20 

.20 
.15 
.15 
.40 

""."45" 
.40 
.20 
.15 

.65 
1.00 
.45 
.50 
.25 

.25 
.20 
.35 
.20 
.15 

.15 
.15 
.35 
.30 
.15 


0.40 


2 




1.00 


3 




.30 


4 




.20 


5 


0.05 

.05 
.05 
.05 


.15 


6 


.15 


7 


.15 


8 


.15 


9 


.15 


10 




.15 


11 




.15 


12 




<«) 
0.15 
.05 

(a) 

(a) 
(a) 
(a) 
(a) 
.20 

.50 

1.00 

1.40 

.80 

.15 

.10 
.10 
.10 
.10 


.10 


13 




.05 


14 




.10 


15 




.10 


16 




.15 


17 




.15 


18 




.15 


19 




.25 


20 


.95 


21 




.30 


22 




1.35 


23 




2.50 


24 




1.15 


25 




.25 


26 




1.00 


27..., 




.40 


28 




.20 


29 




.15 


30 




.10 


31 






.10 











a Channel dry. 

Note. — Daily discharge determined from poorly denned rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
near station No. 50. 

Monthly discharge at station No. 57 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 9-31 

November 

December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.07 
.21 
.24 



.02 
.16 
.24 
.33 
.15 



Run-off 
(total in 
acre-feet). 



3.20 
12.30 
14.90 



1.23 
9.20 
14.80 
19.60 
9.22 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



0.05 
.15 
.14 
.17 
.33 
.32 
.40 



,21 



2.98 
9.22 
8.61 
10.10 
20.30 
19.00 
24.60 



149.00 



314 WATER RESOURCES OF HAWAII, 1912. 

Discharge measurements at station No. 58 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Feet. 
0.75 
.60 


Sec. feet. 

0.03 




Nov. 7.. . 


Feet. 
0.80 
.76 


Sec.-ft. 
16 


Sept. 28 


Dec. 11 


.10 









Note.— Bed of stream of sand and silt; shifting. One channel at all stages. 

Daily gage height, in feet, at station No. 58 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.50 


0.72 

.83 












2 






0.85 
.82 
.81 
.72 

.74 
.83 






0.69 

1.25 

.87 

.82 

""."79" 
.74 
.80 
.81 

""*75* 

"*\*86" 
.85 




0.78 






3 






0.82 

1.02 

.92 

.94 










4 




(«) 
(a) 

—(a)" 
(a) 

(a) 

(a) 
(a) 
0.74 
.65 
.60 

.55 
.51 








'"6.*9i" 

.90 

1.02 

.84 

.81 

.78 
.90 
.86 
.83 
.80 

.81 
.80 
.79 
.75 


.78 
.74 

.74 

.72 

.70 

----- 

.70 
.82 

.78 
.82 

.80 

""."86" 

.91 

1.10 

""i.'oi" 

""."98" 
.83 

.78 
""i."03" 






5 


0.70 

.70 
.70 
.72 


1.19 


.48 


.88 

.77 
.80 

*".*78" 


0.92 

"'"."83" 

.83 

1.02 

'"i."6i" 

1.00 
.90 

.84 

1.14 
1.26 

.88 
1.02 

.95 

.94 

.93 

1.00 

"""."88" 

.85 
.84 
.98 
.98 
.89 


0.88 


6 [ 


.83 


7 


.85 


8 






.50 


.90 


9 


.59 
.81 

.96 

.96 

1.19 

1.26 






.90 


10 




.89 

.72 
.92 
.91 

.78 

.78 


.80 




.89 


11. 


.62 
.62 
.61 
.61 

.58 

.55 




.99 


.86 


12 


.78 




.82 


13 




.93 
.89 


.80 


14 




.60 


.82 


15 


.86 


16 


.69 


.68 




.91 


17 


.92 
1.25 

.85 
1.01 

.82 
.80 
.85 




.82 


.74 


.84 


IS 




.91 
.92 

.88 

.89 

.96 

.97 

1.01 


,68 




.80 


19 


(«) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 
(a) 
(a) 
(a) 
(a) 






.72 
.71 


.80 


1.00 


20 




.70 


1.22 


21 


.72 


.74 
.74 
.72 
.70 

.66 
.64 
.61 
.60 


.92 


22 


.68 






1.36 


23 






.70 
.70 
.68 

.74 




24 


.71 






1.22 


25... 


.81 
.70 


.81 

.82 
.76 
.72 
.69 
.76 




.80 

.80 
.79 
.73 
.78 
.75 
.70 


.90 


26 


1.19 
1.11 
1.09 


.67 
""'."60* 


.78 
.88 

.78 


1.19 


27 


.88 


28 


.89 


29 




30 










31 














































a 


Channe 


ldry. 















Daily discharge, in second-feet, at station No. 58 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 




0.05 
.05 
.10 
.15 
.22 

.30 
.78 
1.04 
.66 
.36 


0.05 
.03 
.03 
.02 
.03 

.03 
.02 
.05 
.10 
.05 


11 


0.28 
.20 
.12 
.10 
.10 

.10 
.10 

.10 
.10 
.05 


0.20 
.10 
.42 
.25 
.25 

.28 
.30 
.36 
.60 

.78 


0.03 
.28 
1.04 
2.02 
6.22 

'1.74 

1.95 
1.88 
1.95 
1.95 


21 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.02 
.02 
.01 


0.66 
.54 
.48 
.42 
.30 

.25 
.10 
.10 

.05 
.05 


0.84 


2 




12. 


22 


.60 


3 




13 


23 


.42 


4 




14 


24 


.54 


5 




15 


25 


.36 


6 




16 


26 


.30 


7... 




17 


27 


.30 


8 




18 


28 


.30 


9 


0.60 
.42 


19... 


29 


.36 


10... 


20 


30 


.30 






31 


.30 









ISLAND OF HAWAII. 



315 



Daily discharge, in second-feet, at station No. 58 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1.. 




(a) 

(a) 

(«) 
(a) 

(a) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 

(a) 

0.15 
.05 
.05 

.05 
.05 
.05 
.05 
.30 

1.00 
3.00 
4.00 
2.00 

.85 

.05 
.05 
.05 
.05 


0.20 
.60 
.40 
.35 
.10 

.15 
.50 
.40 
.40 
.35 

1.30 
1.30 
3.00 
3.60 
1.50 

1.20 
1.05 
3.50 
.60 
1.65 

.40 
.30 
.60 
.40 
.35 

.40 
.20 
.10 
.05 
.20 
3.50 


0.90 

.60 

.40 

1.75 

1.05 

1.20 
4.00 
2.50 
1.00 

.85 

.10 
1.05 
.95 
.25 
.25 

.40 
.60 
.95 
1.05 
.80 

.85 
1.30 
1.40 
1.65 
2.00 

3.00 
2.40 
2.25 
1.00 
1.00 


1.50 
1.50 
1.50 
2.00 
3.00 

2.80 

2.00 

1.00 

.50 

.30 

.30 
.25 
.20 
.15 
.10 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


0.05 
'"*."05* 

.25 
.80 
.25 


0.10 
.50 

1.00 
.90 

.80 

.20 
.30 
.30 
.25 
.30 

1.55 

1.30 

1.10 

.85 

.50 

.50 
.40 
.30 
.10 
.05 

.10 
.15 
.20 
.25 
.30 

.30 
.25 
.10 
.25 
.15 
.05 


0.05 
.05 

3.50 
.70 
.40 

.30 
.25 
.15 
.30 
.35 

.25 
.15 
.20 
.30 
.60 

.10 
.15 
.20 
.30 
.10 

.10 
.10 
.05 
.05 
.05 

.15 
.20 
.15 
.10 
.10 
.10 


1.00 
2.00 
3.00 
4.00 
.95 

.90 
1.75 
.55 
.35 
.30 

.25 
.90 
.65 
.50 
.30 

.35 
.30 
.25 
.15 
.15 

.15 
.15 
.10 
.05 
.05 

.05 
.05 
.05 
.05 
.15 


0.30 
.25 

.25 
.25 
.15 

.15 
.10 
.05 
.05 

.05 

.05 
.40 
.25 
.40 
.40 

.30 

1.00 

.65 

.95 

2.30 

2.10 
1.90 
3.50 
1.45 
.50 

.25 
4.50 
4.00 
3.00 
1.80 
1.50 


1.20 
1.00 
1.00 
1.00 
1.05 

.80 

.50 

.50 

1.75 

4.00 

3.00 

1.65 

1.60 

.90 

.55 

2.60 
3.60 
.80 
1.75 
1.25 

1.20 
1.10 
1.60 
1.20 
.80 

.60 

.55 

1.45 

1.45 

.85 


1.00 


2 . 




3.00 


3 




.80 


4 




.80 


5 


0.05 

.05 
.05 
.10 


.80 


6 


.50 


7 


.60 


8 


.90 


9 


.90 


10 




.85 


11 




.65 


12 




.40 


13 




.30 






.40 


K 




.65 


16 




.95 






.55 


18 




.30 


19 




1.60 


20 




3.25 


21 




1.05 


22 




4.40 


23 




4.00 


24 




3.25 


25 




.90 


26 




3.00 


27 




.80 


28 




.85 


29 




.70 


30 '.. 




.50 


31 






.50 











a Channel dry. 

Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
near station No. 50. 

Monthly discharge at station No. 58 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



Mean 
discharge 
in second- 
feet. 



1911 

October 9-31 

November 

December 

1912 

January 

February 

March 

April 

May 



0.12 
.34 

.78 



.02 
.41 
.92 
1.25 
.58 



Run-off 
(total in 
acre-feet). 



5.40 
20.20 
47.90 



1.23 
23.60 
56.60 
74.40 
35.70 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.05 

.43 

.31 

.65 

1.06 

1.38 

1.26 



Run-off 
(total in 
acre-feet). 



2.98 
26.40 
19.10 
38.70 
65.20 
82.10 
77.50 



504.00 



Discharge measurements at station No. 59 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 



Aug. 20. 
Sept. 28. 



Gage 
height. 



Feet. 
0.71 
.58 



Dis- 
charge. 



Sec.-ft. 
0.14 




Date. 



Nov. 7. 
Dec. 11 



Gage 
height. 



Feet. 
0.74 
.74 



Dis- 
charge. 



Sec.-ft. 
0.9: 



.43 



Note. — Bed of stream sand, gravel, and small cobbles; shifting. One channel at all stages. 



316 WATER RESOURCES OF HAWAII, 1912. 

Daily gage height, in feet, at station No. 59 at 2,700-foot level, near Eilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofi, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.51 


0.70 
.81 












2 






0.86 
.80 
.72 

.72 

.68 
.75 






0.61 

1.25 

.82 

.81 

----- 

.70 
.72 
.76 

.... ... 

"".'76' 
.83 




6.72 






3 






0.79 
.98 

.88 

.88 










4 




(o) 

(a) 

<°) 

(a) 

(a) 

(«) 

0.72 
.60 
.50 

.46 
.41 








"6.' 90* 

.87 

1.00 

.81 

.80 

.75 

' .84 
.79 
.81 
.72 

.79 
.75 
.71 
.70 


.71 

.68 

.68 
.64 
.62 

"".hY 

.64 
.75 
.72 
.76 

.74 

"""."83" 

.89 

1.02 

""."99" 

""."95* 

.82 

.80 
"".'98" 






5 


0.62 

.62 
.62 
.64 


1.16 


.49 


.85 

.71 

.78 

"\*72* 


0.83 

....... 

.75 
.96 

'".*92" 
.91 

.82 

.77 

1.06 

1.28 
.92 
.95 

.87 

.84 
.83 
.90 

"".'78' 

.75 
.72 

.88 
.87 

.77 


0.93 


6 


.75 


7 


.78 


8 






.50 


.83 


9 


.81 

.78 

.82 

.91 

1.06 

1.19 






.80 


10 




.86 

.88 
.85 
.84 
.90 
.93 


.78 




.78 


11 


.62 
.62 
.60 
.60 
.54 

.49 




.99 


.73 


12 


.66 




.70 


13. 




.80 
.90 


.69 


14 




.60 


.70 


15 


.71 


16 


.68 


.63 




.82 


17 


.84 

1.21 

.81 

.79 

.92 
.73 

.77 




.88 


.70 


.76 


18 




.84 

.85 
.88 

.94 

.90 

.90 

1.05 


.55 




.70 


19 


.48 
.45 

.45 
.44 
.42 
.42 
.41 

.41 
.42 
.38 

(a) 

(a) 







.70 
.69 


.79 


.82 


20 




.69 


.95 


21 


.68 


.69 
.70 
.65 
.64 

.61 
.60 
.59 
.59 


.84 


22 


.61 






1.08 


23 






.64 
.64 
.62 

.60 
.70 




24 


.62 






.81 


25 


.85 
.71 


.80 

.79 
.76 
.69 
.66 
.72 




.76 

.74 
.62 
.70 
.71 
.68 
.64 


.87 


26 


1.22 
1.16 
1.15 


.57 
"""."55' 


.78 
.88 
.78 


.86 


27 




23 


.82 


2} 


.81 


31 










31 














































a 


Channe 


ldry. 















Daily discharge, in second-feet, at station No. 59 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 




0.05 
.11 
.18 
.36 
.56 

.84 
1.53 
2.70 
1.66 

.92 


0.11 
.11 
.05 
.10 
.10 

.10 
.10 
.17 
.20 
.17 


11 . 


0.92 
.60 
.44 
.28 
.28 

.24 
.24 
.20 
.20 
.17 


0.48 
.20 

1.08 
.60 
.60 

.60 

.76 

1.00 

1.24 

1.53 


0.12 

.40 

1.00 

2.05 

10.20 

2.57 
2.96 
1.92 
2.96 
2.96 


21 


0.12 
.11 
.10 
.10 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


1.32 
1.24 
1.16 

1.08 
1.00 

.36 
.28 
.24 

.17 
.12 


1.24 


2..." 




12 


22 


1.08 


3 




13 


23 


1.08 


4 




14 


24 


.76 


5 




15 


25. . 


.60 


6 




16 «... 


26. 


.56 


7 




17... 


27... 


.52 


8 




18 


28 

29 


.52 


9 




19 

20 


.76 


10 


1.32 


30 


.68 






31 


.60 









ISLAND OF HAWAII. 



317 



Daily discharge, in second-feet, at station No. 59 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




(a) 
(a) 
(a) 
(a) 
(a) 

(a) 

(a) 
(a) 
(«) 

(a) 

(a) 

0.30 
.05 
.05 

.05 
.05 
.05 
.05 
.20 

2.00 
5.00 
6.00 
3.00 
1.00 

.25 
.10 
.10 
.10 


0.60 

1.10 

.60 

.30 

.30 

.20 
.40 
.50 
.70 
^50 

.80 
1.55 
3.50 
5.20 
3.00 

1.60 

.90 

5.45 

.70 

.55 

1.65 
.30 
.50 
.50 
.60 

.55 
.45 
.20 
.15 
.30 
2.50 


1.00 

.80 

.55 

2.40 

1.25 

1.25 
4.00 
3.00 
2.50 
1.10 

1.25 

1.00 

.90 

1.40 

1.80 

1.50 
2.20 
.90 
1.00 
1.25 

1.90 
1.40 
1.40 
3.35 
4.40 

5.60 
4.80 
4.65 
3.00 
2.00 


2.00 
2.00 
3.00 
4.00 
4.80 

3.50 

2.00 

1.00 

.80 

.50 

.30 
.15 
.15 
.20 
.20 

.20 
.10 
.05 
.05 
.05 

.10 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.05 
.05 


"6.05" 

.10 

"".'26' 

.50 

1.25 

.50 


0.20 
.70 
2.50 
1.50 
1.00 

.25 
.50 
.40 
.30 
.30 

2.60 
1.50 
.60 
1.40 
1.30 

1.30 

1.25 

.60 

.20 

.20 

.20 
.30 
.30 
.40 

.45 

.35 
.10 
.20 
.25 
.15 
.10 


0.10 
.05 

6.00 
.75 
.70 

.40 
.35 
.20 
.30 
.45 

.40 
.25 
.40 

.45 

.85 

.30 
.20 
.40 
.55 
.30 

.20 
.10 
.10 
.10 
.10 

.05 
.20 
.20 
.10 
.10 
.10 


0.80 
1.00 
2.50 
4.00 
1.40 

1.15 

2.70 

.70 

.60 

.50 

.40 
.90 
.55 
.70 
.30 

.55 
.40 
.25 
.20 
.20 

.20 
.20 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.20 


0.20 
.30 
.30 
.25 
.15 

.15 
.10 
.10 
.10 
.15 

.10 
.40 
.30 
.45 
.40 

.35 
1.30 

.85 
1.30 
2.95 

2.80 
2.60 
3.00 
2.05 
.75 

.60 
6.00 
4.00 
4.00 
2.45 
2.00 


2.00 
2.50 
3.00 
1.00 

.85 

"\*35" 

.40 

2.20 

5.00 

2.50 

1.65 

1.55 

.75 

.50 

3.50 
6.40 
1.65 
2.05 
1.15 

.90 

.85 

1.40 

1.00 

.50 

.40 

.30 

1.25 

1.15 

.50 


2.00 


2 




3.00 


3 




2.00 


4. 




2.00 


5 


0.10 

.10 
.10 
.10 


1.80 


6.. 


.40 


7 


.50 


8 


.85 


9. 


.60 


10.... 




.50 


11 


.10 
.10 
.05 


.30 


12 


.20 


13 


.20 




.20 


15 


.25 


16 




.75 






.45 


18 




.20 






.75 


20 




2.05 


21 




.90 


22. 




3.7,5 
5.00 


23 








.70 


25 




1.15 


26 


1.10 




.90 


28 




.75 






.70 


30 




.50 








.50 











a Channel dry. 

NoTE.r— Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
near station No. 50. 

Monthly discharge at station No. 59 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 
October 10-31.... 

November 

December 

1912 

January 

February 

March 

April 

May 



discharge 
in second- 
feet. 



0.26 

.77 
1.18 



.05 

.63 

1.16 

2.12 

.83 



Run-off 
(total in 
acre-feet). 



11.20 
45.40 
72.70 



3.07 
36.20 
71.30 
126.00 
51.00 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.15 

.69 

.48 

.70 

1.30 

1.58 

1.13 



.90 



Run-off 

(total in 

acre-feet). 



8.93 
42.40 
29.50 
41.70 
79.90 
94.00 
69.50 



654.00 



318 



WATER RESOURCES OF HAWAII, 1912. 



Discharge measurements at station No. 60 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Feet. 
0.55 
.34 


Sec.-ft. 
0.03 



Nov.7 


Feet. 
0.56 
.54 


Sec.-ft. 
0.04 


Sept. 28 


Dec. 11 


.03 









Note. — Bed of stream sand, gravel, and small cobbles; probably shifting. One channel at all stages. 

Daily gage height, in feet, at station No. 60 at 2,700-foot level ^near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayefi , Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1. 












0.36 


0.51 
.59 












2. . 






0.65 
.68 
.66 
.60 

.55 
.61 






0.48 
.89 
.66 
.63 

""".■59" 
.55 
.50 
.60 

"".*50" 

"".60 

.66 




0.50 






3 






0.66 
.86 
.66 

.69 










4 




(a) 
(a) 

(«) 

(a) 

(a) 

(a) 

0.50 
.45 
.40 

.32 
(») 








"6." 66* 

.63 
.71 
.60 

.58 

.55 
.61 
.68 
.60 
.53 

.61 
.55 
.52 
.50 


.54 
.50 

.50 

.48 
.46 

"""."48" 

.44 

.58 
.47 
.58 

.58 

'""."66" 
.66 
.76 

'"."72" 

"""."68" 
.59 

.60 

"""."78" 






5_. 


0.44 

.44 
.44 
.45 


0.93 


.35 


.62 

.56 
.55 

"".*58" 


0.62 

"".*56" 
.60 

.72 

"*\'70" 

.66 
.60 
.50 

.75 
.84 
.71 
.70 
.65 

.64 
.64 
.68 

"""."eo" 

.59 
.58 
.69 
.67 
.60 


0.49 


6 


.54 


7. 


.58 


8 






.41 


.42 


9 


.64 
.62 

.70 

.70 

.96 

1.03 






.60 


10 




.69 

.68 
.65 
.66 
.61 
.60 


.56 




.59 


11 


(a) 
(a) 
(a) 
(a) 
(a) 

(a) 




.71 


.56 


12. 


.51 




.50 


13. 




.61 
.69 


.48 


14.^.... 




.51 


.50 


15. 


.52 


16 


.41 


.50 




.64 


17. 


.64 

1.05 

.66 

.70 

.62 
.61 
.63 




.64 


.55 


.59 


18. 




.66 
.66 
.68 

.69 
.75 
.73 

.81 


.39 




.52 


19. 


(a) 
(a) 

(a) 

(a) 
(a) 
(a) 
(a) 

(a) 

(a) 
(a) 

(a) 
(a) 






.58 
.56 


.60 


.61 


20. . 




.58 


.75 


21 


.51 


.48 
.48 
.45 
.42 

.40 
.38 
.34 
.34 


.67 


22 


.46 






.85 


23 






.48 
.48 
.44 

.40 
.50 




24.. 


.51 






.80 


25 


.60 
.52 


.64 

.62 
.61 
.56 
.53 

.56 




.61 

.67 
.55 
.51 
.57 
.54 
.50 


.64 


26 


.98 
.89 
.85 


.40 
""*."39* 


.58 
.70 
.58 


.64 


27 




28 


.6i 




.63 


30 

















































a Channel dry. 

Daily discharge, in second-feet, at station No. 60 at 

for 1911. 



,7 00-foot level, near Hilo, Hawaii, 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


j 




0.01 
.01 
.05 
.10 
.10 

.26 
.50 
.68 
.50 
.38 


0.01 
.01 
.01 
.01 
.01 

.01 
.01 
.01 
.05 
.01 


11 


0.14 
.10 
.10 
.03 
.03 

.03 
.03 
.05 
.05 
.03 


0.22 
.10 
.30 
.22 

.18 

.14 
.14 
.14 
.50 
.98 


0.01 

.14 

.74 

1.66 

6.02 

2..50 
2.90 
2.50 
2.90 
2.90 


21 


0.01 
.01 
.01 
.01 
.01 

.01 
.01 
.01 
.01 
.01 
.01 


0.86 
.80 
.74 
.68 
.62 

.14 
.02 
.02 
.01 
.01 


1.66 


2 




12 


22 


1.52 


3 




13 


23 


.62 


4 




14 


24 


1.38 


5 




15 


25 


1.04 


6 




16 


26 


.56 


7 




17 


27 


.42 


8 




18 


28... 


.42 


9 




19 


29 


.62 


10 


0.30 


20 


30 


.56 






31 


.50 









ISLAND OF HAWAII. 



319 



Daily discharge, in second-feet, at station No. 60 at 2,700-foot level, near Eilo, Hawaii, 

for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



(a) 



(a) 
(a) 

(«) 
(a) 
(a) 

(a) 



n 



(a) 
(a) 
(a) 

(a) 
(a) 
(») 
(») 
(a) 



0.1 



0.30 
.30 
.40 
.30 
.10 

.05 
.10 
.20 
.30 
.20 

.50 

.50 

2.20 

2.70 

1.00 

.50 
.30 
2.90 
.30 
.50 

.20 
.10 
.20 
.20 
.30 

.20 
.10 
.10 
.10 
.10 
2.00 



0.80 
.50 
.30 

1.50 



.50 
2.50 
2.00 
1.50 

.50 



.30 
.30 
.10 
.10 

.20 
.40 
.30 
.30 
.40 

.50 

.80 

.70 

1.20 

1.80 

2.40 
1.70 
1.40 



2.00 



,10 



0.10 



.10 
.50 
.10 



0.10 
.10 
.30 
.20 
.20 

.10 
.05 
.10 
.10 
.10 



0.10 
.10 

1.70 
.30 
.20 

.10 
.10 
.05 
.10 
.10 

.10 
.10 
.10 
.10 
.30 

.05 
.05 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 
.10 



0.80 
1.00 
1.50 
2.00 



.20 
.60 
.10 
.10 
.10 

.05 
.10 
.40 
.10 
.10 

.10 
.05 
.05 
.05 
.05 

.05 
.C5 
.05 
.05 
.05 

.05 

.05 
.05 
.05 
.10 



0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.70 
.30 
.30 
.90 

1.10 
.60 

1.50 
.40 
.10 

.10 
3.30 
2.00 
2.00 
1.00 

.70 



1.00 
1.00 
2.00 
1.00 
.20 

.10 
.10 
.10 
.60 
2.50 

2.00 
.50 
.30 
.10 

..10 

.80 
1.40 
.60 
.50 
.30 

.30 
.30 
.40 
.20 
.10 

.10 
.10 
.50 
.40 
.10 



0.70 

1.00 

.50 

.20 

.10 

.10 
.10 
.20 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.30 
.10 
.10 
.10 



.40 
1.40 
3.00 
1.10 



.30 
.20 
.10 
.20 
.10 
.10 



a Channel dry. 



Dis- 
charge for days for which gage heights are missing estimated "from diagram prepared from record of daily 



Note. — Daily discharge determined from rating curve fairly well denned except for flood stages, 
large for days for which gage heigh 
rainfall at the camp near station No. 50. 



Monthly discharge at station No. 60 at 2,700- foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



discharge 
in second- 



Run-off 
(total in 
acre-feet). 



Month. 



discharge 
in second- 
feet. 



Run-off 

(total in 

acre-feet). 



1911 
October 10-31.... 

November 

December 

1912 

January 

February 

March 

April 

May 



0.05 

.31 

1.02 



1.98 
18.70 
62.90 



.01 
.05 
.56 
.83 
.20 



.61 

2.88 
34.40 
49.40 
12.30 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



0.10 
.18 
.16 
.28 
.54 
.59 
.39 



.32 



5.95 
11.10 

9.84 
16.70 
33.20 
35.10 
24.00 



235. 00 



Discharge measurements at station No. 61 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
(E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Feet. 
0.33 
.20 


Sec.-ft 



Nov. 7 


Feet. 
0.21 
.24 


Sec.-ft. 
0.01 


Sept. 21 


Dec. 11 


.01 











Note. — Bed of stream of silt and sand; shifting. One channel at all stages. 



320 



WATER RESOURCES OF HAWAII, 1912 



Daily gage height, in feet, at station JSo. 61 at 2,700-foot level, near Eilo, Hawaii, for 

1912. 

[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.30 


0.35 

.47 












2 






0.42 
.40 
.62 
.35 

.31 
.35 






0.30 
.60 




0.30 






3 






0.44 
.39 

.58 

.60 










4 




(a) 








.43 

.42 

""""38" 
.35 
.37 
.38 

""."36' 

""."37" 

.40 


"6." 42' 

.41 
.30 
.40 
.39 

.34 
.39 
.39 
.40 
.35 

.38 
.35 
.32 
.30 


.32 

.35 

.28 
.28 
.26 

""."36" 

.34 
.34 
.32 
.34 

.34 

""."38" 
.40 
.50 

""."48" 

"""."44" 
.36 

.40 

""."si" 






5 


0.35 

.35 
.35 

.38 


1.25 


.28 


.50 

.39 
.40 

"".'38" 


0.35 

""."2i" 
.22 
.41 

"""."io" 
.45 
.28 
.24 

.44 
.55 
.44 
.39 
.30 

.30 
.29 
.34 

"""."25" 

.25 
.24 
.38 
.34 
.27 


24 


6 


22 


7 


22 


8 






.29 


28 


9. 


.40 
.40 

.48 
.46 
.79 
.79 






28 


10 






50 

.44 
.40 
.48 
.40 
.46 


82 




24 


11 


(a) 






.44 


.22 


12 


.ei 




.21 


13 




0.46 
.40 
.30 

(a) 




.39 

.41 


20 


14 






.40 


.21 


15 




.22 


16 




.35 


.40 




.29 


17 




.43 

.81 
.43 
.46 

.44 
.52 
.44 




.42 


.33 


.22 


18 






.46 
.52 
.53 

.57 
.49 

.47 
.60 


.31 




.20 


19 


(a) 






.34 
.32 


.39 


.30 


20 




.28 


.46 


21 






.31 


.29 
.29 
.28 
.24 

.22 
.22 
.21 
.21 


.40 


22 






.30 






.53 


23 






.30 
.30 
.29 

.28 
.31 




24 






.31 






.61 


25 




.40 
.33 


.41 

.40 
.38 
.30 
.30 

.47 




.39 

.35 
.26 
.31 
.35 
.28 
.21 


.40 


26 




.76 
1.06 
1.03 


.30 
"".'28' 


.31 
.41 
.31 


.50 


27 






28 






.30 


29.... 






.32 


30 














31 











































a Channel dry. 
Monthly discharge at station No. 61 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May , 



discharge 
in second- 
feet. 



a 0.06 
a. 08 
o.l5 



0.000 
.005 
.17 
.32 



Run-off 
(total in 
acre-feet). 



3.69 
4.76 
9.22 



.00 

.30 

10.70 

18.80 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



07 
.10 
.10 
.12 
.16 
.15 
.11 



,12 



Run-off 
(total in 
acre-feet). 



4.00 
6.00 
6.10 
6.90 
9.90 
8.90 
6.90 



83.40 



a Estimated. 

Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rain- 
fall record at camp near station No. 50. 



ISLAND OF HAWAII. 



321 



Discharge measurements at station No. 62 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 



Aug. 20. 
Sept. 28. 



Gage 
height. 



Dis- 
charge. 



Feet. 
1.19 
.84 



Sec.-ft. 



Date. 



Nov. 7.. 
Dec. 11. 



Gage 
height. 



Feet. 
1.25 
1.23 



Dis- 
charge. 



Sec.-ft. 
4.66 
3.64 



Note.— Bed of stream of cobbles and bowlders. Some bedrock exposed. Section rough near gage; 
station probably permanent. One channel at all stages. 

Daily gageheight, in feet, at station No. 62 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.90 


1.28 
1.37 












2. . 






1.55 
1.40 
1.25 
1.08 

1.15 
1.21 






0.92 
2.60 
1.55 
1.35 

*"i.'l8' 
1.14 
1.18 
1.21 

"Tii" 

"i.'30* 
1.57 




1.11 






3. . 






1.51 
1.58 
1.50 

1.47 










4 . 




"W 

(a) 

(a) 
(a) 
1.15 
1.10 
.90 








*"i.'6o' 

1.61 
2.01 
1.41 
1.33 

1.25 
1.46 
1.28 
1.25 
1.23 

1.34 
1.20 
1.18 
1.10 


1.20 
1.10 

1.08 
1.02 
1.00 

"Tii" 

1.10 
1.42 
1.20 
1.36 

1.34 

"L62* 
1.72 
2.32 

"i.*86" 

"i.92* 
1.34 

1.21 
"2." 16* 






5 


1.02 

1.02 
1.02 
1.05 


1.84 


.89 


1.40 

1.28 
1.31 

"i.'20' 


1.54 

"i.'25" 
1.30 

1.82 

"i."78* 
1.80 
1.43 
1.29 

2.14 
2.72 
1.80 

1.87 
1.49 

1.46 
1.50 
1.56 

"T32' 

1.26 
1.21 

1.48 
1.66 
1.30 


1.35 


6 


1.30 


7 .. 


1.40 


8 






.88 


1.60 


9 . 


1.46 
1.40 

1.41 
1.79 

1.87 
1.99 






1.45 


10 




1.85 

1.75 
1.59 
1.52 
. 1.35 
1.29 


1.40 




1.30 


11. 


.94 
.94 
.92 
.92 

.85 

.80 




1.94 


1.16 


12 


1.12 




1.16 


13 




1.33 
1.68 


1.10 


14 




.91 


1.11 


15 


1.30 


16 


.98 


.92 




1.50 


17 




1.76 
1.96 
1.49 
1.86 

1.45 
1.41 
1.47 




1.67 


1.15 


1.40 


18. 






1.39 
1.40 
1.41 

1.42 
1.64 
1.62 
1.71 


.90 




1.20 


19 


.75 

.74 

.74 
.72 
.71 
.71 
.70 

.70 
.71 
.66 

.65 






1.15 
1.14 


1.36 


1.50 


20 




1.01 


2.15 


21 


1.09 


1.01 
1.05 
1.00 

.98 

.91 

.87 
.84 
.81 


1.62 


22 


1.02 






2.42 


23 






1.00 
1.04 
1.02 

.96 
1.35 




24 


1.14 






2.82 


25 


1.50 
1.30 


1.36 

1.30 
1.15 
1.13 

1.19 




1.21 

1.19 

1.25 
1.17 
1.15 

1.08 
1.01 


1.80 


26 


1.70 

1.66 
1.68 


.99 
"""."95' 


1.58 
1.70 
1.58 


2.40 


27 




28 


1.36 




1.32 


30 










31 







































a Channel dry. 

Daily discharge, in second-feet, at station No. 62 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 




1.38 
2.62 
4.60 
7.80 
12.00 

16.80 
26.20 
40.60 
28.00 
18.00 


1.38 
1.38 
1.20 
1.20 
1.20 

1.29 

1.38 
2.23 
3.40 
2.23 


11 


10.20 
7.20 
5.00 
3.40 
3.40 

3.60 
3.60 
3.80 
3.80 
3.01 


10.20 
4.40 
12.80 
11.30 
9.84 

8.40 
11.30 
14.00 
19.60 
26.20 


1.92 

7.80 

19.20 

35.80 

85.00 

34.00 
46.00 
35.80 
47.80 
48.40 


21 


2.36 
2.10 
1.92 
1.74 
1.56 

1.38 

1.20 

1.05 

.90 

.80 

.70 


24.50 
23.00 
22.00 
21.00 
20.00 

12.00 
9.12 
3.40 
2.62 
1.38 


22.50 


2 




12 


22 


3.40 


3 




13... 


23 


3.40 


4 




14 


24 


22.50 


5 




15 


25 


12.80 


6 




16... 


26 


8.40 


7 




17.. 


27 


5.40 


8 




18 


28 


5.00 


9 




19 


29 


12.80 


10 


13.60 


20 


30 


12.40 






31 


12.00 









14694°— wsp 336—14 21 



322 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 62 at 2,700-foot level, near Kilo, Hawaii, 

for 1912. 



Day. 



1 
2 
3 
4 
5 

6 

7. 
8 
9 
10 

11 
12 
13 
14 
15 

16. 
17 

18. 
19 
20. 

21. 
22. 
23. 
24. 
25. 

26. 
27. 
28. 
29. 
30. 
31. 



Jan. 



1.40 
1.40 
1.40 
1.40 
1.40 

1.40 
1.40 
1.60 
1.40 
1.20 



.90 
.80 
.80 
.50 

.35 
.30 
.30 
.25 
.25 

.25 
.20 
.15 
.15 
.15 

.15 

.15 
.10 
.10 
.10 
.10 



Feb. 



(a) 
(a) 
(a) 

(a) 
(a) 

(a) 
(a) 



(a) 

(a) 
(a) 
2.75 
2.10 
.70 

.10 
.10 
.10 
.10 
10.00 

40.00 
80.00 
90.00 
50.00 
12.00 

5.40 
4.00 
4.00 
4.00 



Mar. 



6.00 
12.00 
8.40 
4.40 
1.90 

2.75 
3.60 
7.00 
11.00 
8.40 



24.00 
29.00 
36.00 
30.00 

26.00 
23.00 
35.00 
11.60 
29.00 

10.00 
8.80 

11.00 
9.00 
7.20 

5.40 
2.75 
2.50 
2.20 
3.30 
36.00 



Apr. 



20.00 
15.00 
12.00 
12.00 
12.00 

11.00 
60.00 
50.00 
40.00 
28.00 

22.00 
16.00 
13.00 
6.90 
5.20 

8.00 
12.00 
8.10 
8.40 
8.80 

9.10 

18.00 
17.00 
20.00 
20.00 

20.00 
18.00 
19.00 
15.00 
18.00 



May. 



19.00 
19.00 
19.00 
20.00 
27.00 

22.00 
15.00 
12.00 
10.00 
8.40 

5.40 
2.40 
2.00 
1.60 
1.40 

1.10 
1.00 
.70 
1.00 
1.00 

1.00 
1.40 
4.00 
2.60 
2.00 

1.15 
1.00 
.95 
.90 
.80 
.70 



June. 



0.70 
.70 
.70 
.70 
.70 

.65 
.65 
.65 
.70 
.70 

.70 
.70 
.70 

.75 
.80 

.80 
.90 
1.00 
1.20 
1.30 

1.60 
2.00 
2.00 
3.00 
6.00 

12.00 
20.00 
15.00 
12.00 
9.00 



July. 



3.60 
7.50 
15.00 
11.00 
8.40 

5.00 
5.70 
4.50 
3.40 
3.40 

33.00 
15.00 
6.30 
19.00 
14.00 

12.00 
19.00 
10.00 
2.75 
2.60 

3.00 
3.00 
3.00 
3,00 
3.60 

3.30 
4.40 
3.00 
2.75 
1.90 
1.30 



Aug. 



1.00 

.80 

73.00 

14.00 

6.50 

5.00 
3.15 
2.60 
3.10 
3.60 

3.10 
2.60 
4.50 
5.40 
15.00 

3.00 
2.75 
5.00 
7.20 
3.00 

2.00 
1.60 
1.20 
1.60 
1.40 

1.00 
6.90 
6.00 
5.00 
4.00 
5.00 



Sept. 



25.00 
30.00 
50.00 
85.00 
16.00 

16.00 
38.00 
8.80 
6.30 
5.40 

4.40 
11.00 
5.00 
4.40 
4.00 

6.60 
3.40 
3.10 
2.10 
1.70 

1.30 
1.65 
1.20 
1.10 
.90 

.75 
.60 
.50 
.40 
5.00 



Oct. 



3.00 
2.20 
3.00 
3.40 
2.10 

1.90 
1.40 
1.20 
1.00 
2.60 

2.10 
9.10 
3.40 
'7.20 
7.00 

6.60 
35.00 
17.00 
21.00 
56.00 

60.00 
29.00 
85.00 
32.00 



3.60 
•90.00 
60.00 
50.00 
47.00 
48.00 



Nov. 



50.00 
60.00 
40.00 
70.00 
14.00 

10.00 

4.40 

5.40 

26.00 

60.00 

50.00 
24.00 
25.00 
9.50 
5.20 

45.00 
80.00 
25.00 
29.00 
12.00 

11.00 
12.00 
14.00 
10.00 
6.00 

4.60 
3.60 
11.00 
18.00 
5.40 



Dec. 



25.00 
40.00 
15.00 
18.00 
6.90 

5.40 
8.40 
16.00 
10.00 
5.40 

2.90 
2.90 
2.10 
2.25 
5.40 

12.00 
8.40 
3.40 
12.00 
46.00 

17.00 

62.00 
90.00 
86.00 
25.00 

61.00 
30.00 
7.20 
6.00 
5.00 
5.00 



a Channel dry. 

Note. — Daily discharge determined from rating curve fairly well denned except for flood stag 
charge for days for which gage heights are missing estimated from diagram prepared from recorc 
rainfall at the camp near station No. 50. 



ss. Dis- 
of daily 



Monthly discharge at station No. 62 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 10-31.... 

November 

December 

1912. 

January 

February 

March 

April 



discharge 
in second- 
feet. 



3.46 
14.20 
16.10 



.68 
10.50 
13.40 
18.10 



Run-off 
(total in- 
acre-feet). 



152 

847 



41.80 
604. 00 
824. 00 
,080.00 



Month. 



1912— Continued. 

May 

June 

July 

August , 

September 

October ' 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



6.63 

3.28 

7.53 

6.45 

11.30 

22.50 

17.30 

20.70 



11.50 



Run-off 
(total in 
acre-feet). 



408.00 

195.00 

463.00 

397.00 

672.00 

1,380.00 

1,030.00 

1,270.00 



8,360.00 



Discharge measurements at station No. 63 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Feet. 

0.45 

.40 


Sec.-ft. 

0.05 




Nov. 7 


Feet. 
0.47 

.48 


Sec.-ft. 
0.10 


Sept. 28 . 


Dec. 11 


.03 









Note. — Bed of stream of sand and silt; shifting. One channel at all stages. 



ISLAND OF HAW An. 



323 



Daily gage height, in feet, at station No. 63 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 














0.40 


0.42 
.53 


















0.61 
.52 

.51 
.48 

.45 
.48 






0.45 




0.46 












0.50 
.74 
.54 

.55 














0.40 
.40 

"".40 

.40 
.40 

.40 
.40 
.52 

.42 

.41 
.40 








.53 

.57 

"*."50" 
.58 
.50 
.51 

""'."49" 

""\*50" 
.53 


"b'.'hi' 

.54 
.61 
.50 
.49 

.44 
.50 
.50 
.54 
.51 

.51 
.49 
.48 
.46 


.48 
.46 

.43 

.42 

.44 

------- 

.43 
.48 
.46 
.50 

.49 

"""."52" 
.57 
.60 

'"."58* 

""."54" 

.48 

.47 
""\*59* 






5 


0.51 

.51 
.51 
.52 


1.02 


.30 


.58 

.45 
.50 

'"'."49" 


0.52 

------- 

.50 
.62 

"""."54" 

.55 
.50 
.48 

.62 
.64 
.56 
.55 
.52 

.52 
.52 

.58 


0.50 


6 


.42 


7 


.59 


g 






.37 


.52 


9 


.56 
.55 

.54 

.52 






.51 


10 




.55 

.54 

.57 
.54 

.51 


.55 




.49 


11 


.48 
.48 
.48 

.50 

.50 




.60 


.46 


12 


.50 




.44 


13 




.50 
.55 


.44 






.40 


.44 


15 


.50 


16 


.45 


.32 




.56 




.52 

.91 
.53 
.55 

.51 

.48 
.52 




.54 


.48 


.49 


18 




.51 
.59 
.65 

.64 
.71 
.71 
.80 


.43 




.48 




.50 
.50 

.50 
.48 
.46 
.46 
.45 

.45 

.45 
.42 
.40 
.40 


"""."52" 

.48 




.48 
.46 


.50 


.50 


20 




.40 


.60 


21 


.44 


.44 
.46 
.44 
.42 

.42 
.42 
.41 
.41 


.50 


22 


.45 






.65 


23 






.45 
.47 
.45 

.42 

.48 






.47 








25... 




.52 

.51 

.49 
.44 
.42 
.49 




.50 

.50 
.50 
.49 
.52 
.50 
.48 


.50 

.50 
.48 
.56 
.55 
.50 


.51 


26 


.92 

.88 
.85 


.48 
"".'45' 


.41 
.55 
.41 


.60 


27 




28 


.50 




.52 


30 

















































Monthly discharge at station No. 63 at 2,700-foot level, near Hilo, Hawaii, for 1911-1 



Month. 



October . . . 
November. 
December. 



1911. 



January.. 
February. 
March — 

April 

May 



1912. 



Mean 
discharge 
in second- 
feet. 



o0.04 
a. 10 
o.l2 



.002 

.003 

.01 

.01 

.006 



Run-off 
(total in 
acre-feet). 



2.46 
5.95 
7.38 



.10 
.20 
.90 
.90 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 



The year. 



Mean 
discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



0.005 
.07 
.08 
.09 
.12 
.12 
.10 



0.30 
4.60 
5.00 
5.30 
7.50 
6.90 
6.10 



38.20 



a Estimated. 
Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rain- 
fall record at camp near station No. 50. 

Discharge measurements at station No. 64 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage - 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Fe#. 
0.58 
.40 


Sec.-ft. 
0.01 



Nov. 7.. 


Feet. 
0.08 
.40 


Sec.-ft. 
0.03 


Sept. 28 


Dec. 11 


.03 









Note.— Bed of stream of sand and silt; shifting. One channel at all stages. 



324 WATER RESOURCES OF HAWAII, 1912. 

Daily gage height, in feet, at station No. 64 at 2,700-foot level, near Kilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Deco 


1 


1 








0.29 


0.40 
.51 












2 


1 


0.56 
.52 
.44 
.45 

.45 
.51 






0.41 




0.31 






3 






0.49 
.69 
.55 

.60 










4 




0.00 
.00 

'"'."66" 

.00 
.00 

.00 
.00 
.50 
.45 
.42 

.36 
.34 








.59 

.58 

'""."49* 
.46 
.50 
.51 

'""."49" 

""so" 

.52 


'"6." 49" 

.50 
.54 
.48 
.46 

.43 
.49 
.48 
.53 
.50 

.50 
.46 
.30 
.20 


.42 
.32 

.30 
.28 
.31 

""."42' 

.40 
.48 
.46 
.50 

.49 

""."56" 
.50 
.56 

"""."54" 

"".'45" 
.41 

.42 
""."28" 






5 


0.34 

.34 
.34 
.45 


1.05 


.20 


.55 

.44 
.49 

""".'46' 


0.12 

'"'.ik' 

.16 
.31 

"""."27* 
.30 
.14 
.10 

.57 
.65 
.40 
.48 
.36 

.32 
.36 

.44 


44 


6 


.41 


7 


.46 


8 






.24 


.50 


9 


.51 

.50 

.51 
.53 
.64 

.72 






.50 


10 




-54 

.53 
.52 
.52 
.48 

.48 


.50 




.48 


11 


.40 
.40 
.40 
.40 
.35 

.25 




.52 


.39 


12 


.46 




.31 


13 




.48 
.50 


.30 


14 




.30 


.35 


15 


.40 


16 


.32 


.24 




.54 


17 


.51 
.76 
.51 
.55 

.51 
.48 
.52 




.30 


.48 


.50 


18... 




.50 
.52 
.59 

.61 
.62 
.62 

.74 


.35 




.38 


19 


.05 
.05 

.05 
.04 
.02 
.02 
.00 

.00 
.00 
.00 
.00 
.00 






.20 
.19 


.49 


.45 


20 




.40 


.62 


21 


.44 


.20 
.30 
.18 
.09 

.05 
.03 
.02 
.02 


.50 


22 


.31 






.78 


23 






.42 
.45 

.44 

.32 

.49 




24 .. 


.37 








25 


.50 
.46 


.51 

.50 
.48 
.46 
.43 

.42 




.41 

.41 
.39 
.30 
.32 
.25 
.20 


.29 

.25 
.23 

.47 
.48 
.31 


.52 


26 


.94 
.86 

.86 


.31 
"".'36' 


.41 
.50 
.41 


.70 


27 




28 


.57 


29 


.54 


30... 




31... 







































Monthly discharge at station No. 64 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 

October 

November 

December 

1912 

January 

February 

March 

April 

May 



Mean 



in second- 
feet. 



a 0.06 
a. 16 
a. 40 



.003 
.003 



,20 



Run-off 
(total in 
acre-feet). 



3.69 

9.51 

24.60 



.20 

.20 

12.10 

11.90 

5.10 



Month. 



1912— Continued 

June 

July. 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 



Run-off 
(total in 
acre-feet). 



0.07 
.06 
.09 
.12 
.16 
.15 
.13 



4.00 
4.00 
5.50 
7.10 
9.70 
7.10 
7.90 



74.80 



a Estimated. 

Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
record at camp near station No. 50. 



ISLAND OF HAWAII. 



325 



Discharge measurements at station No. 65 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 




Feet. 
1.56 
1.39 


Sec-ft. 
0.18 



Nov. 7 


Feet. 
1.54 
1.54 


Sec-ft. 
0.19 


Sept 28 


Dec. 11 


.18 









Bed of stream of sand, gravel and silt; shifting. One channel at all stages. 

Daily gage height, in feet, at station No. 65 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












1.40 


1.52 
1.61 












2 






1.58 
1.50 
1.42 
1.48 

1.51 
1.62 






1.47 




1.50 






3 






1.59 
1.70 
1.68 

1.64 










4 




1.75 
1.40 

"1.35* 

1.32 
1.32 

1.32 
1.31 
1.60 
1.58 
1.52 

1.51 
1.50 








1.68 
1.64 

"i."59" 
1.54 
1.60 
1.61 

"*i."59" 

"i'60' 
1.64 


"'i'65' 

1.59 
1.71 
1.60 
1.59 

1.57 
1.61 
1.59 
1.57 
1.55 

1.61 
1.57 
1.54 
1.50 


i.58 
1.54 

1.52 
1.51 
1.51 

"i.*53" 

1.51 
1.60 
1.54 
1.60 

1.60 

"i.66" 

1.68 
1.80 

"l.l2 

"i.*70' 
1.63 

1.60 
"i'76" 






5 


1.50 

1.50 
1.50 
1.55 


i.88 


1.29 


1.68 

1.52 
1.60 

"i.5i" 


1.62 

"i."54" 
1.60 
1.74 

"i."68" 
1.68 
1.60 
1.55 

1.78 
1.90 
1.69 
1.63 
1.62 

1.62 
1.63 
1.66 


1.58 


6 


1.58 


7 


1.58 


8 






1.31 


1.61 


9 


1.62 
1.61 

1.61 
1.67 
1.68 
1.94 






1.60 


10 




1.64 

1.62 
1.68 
1.46 
1.59 
1.58 


1.35 




1.58 


11 


1.50 

1.50 
1.50 
1.50 
1.50 

1.50 




1.70 


1.55 


12 


1.33 




1.54 


13 




1.59 
1.65 


1.54 


14 




1.50 


1.55 


15 


1.58 


16 


1.29 


1.45 




1.62 


17 . 


1.56 
1.98 
1.66 
1.66 

1.62 
1.58 
1.65 




1.59 


1.55 


1.52 


18... 




1.54 
1.70 
1.63 

1.67 
1.63 
1.64 


1.01 




1.54 


19.. 


1.50 
1.50 

1.50 
1.49 
1.49 
1.49 
1.48 

1.48 
1.49 
1.46 

1.45 






1.52 
1.51 


1.61 


1.60 


20 




1.51 


1.72 


21 


1.52 


1.50 
1.52 
1.51 
1.49 

1.44 
1.42 
1.41 
1.41 


1.58 


22 


1.46 






1.86 


23 






1.50 
1.53 
1.51 

1.45 
1.58 




24 


1.60 








25 


1.50 
1.39 


1.56 

1.60 
1.49 
1.44 

1.48 




1.51 

1.68 
1.51 


1.61 

1.59 
1.60 
1.54 
1.54 
1.52 
1.50 


1.58 

1.58 
1.56 
1.67 
1.68 
1.60 


1.64 


26 


1.79 
1.73 

1.68 


1.48 
"i.'49" 


1.90 


27 




28 


1.58 




1.60 


30 

















































Daily discharge, in second-feet, at station No. 65 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 




0.16 
.19 
.25 
.31 
.37 

.47 

.96 

1.38 

1.10 

.82 


0.10 
.10 
.10 
.10 
.10 

.16 
.13 
.37 
.54 
.37 


11 


0.37 
.28 
.22 
.16 
.16 

.19 
.22 
.25 
.25 

.25 


0.54 
.34 
.96 

.68 
.54 

.40 

.47 
.54 
.61 
.75 


0.25 
1.10 
2.12 
3.24 
5.72 

1.80 
2.44 
1.96 
2.44 
2.52 


21.. 


0.25 
.25 
.25 
.25 
.25 

.25 
.25 
.22 
.19 
.16 
.13 


0.68 
.61 
.54 
.47 
.37 

.13 
.13 
.10 
.10 
.13 


0.75 


2 




12.. . 


22.. 


.25 


3 




13 


23.. 


.25 


4 




14.. 


24.. 


.75 


5 




15.. . 


25.. . 


.10 


6 




16.. 


26 


.10 


7..... 




17.. 


27 


.10 


8 




18.. 


28 


.10 


9 




19.. 


29 


.22 


10 


0.54 


20.. 


30 


.16 






31 


.10 









326 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 65 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1 
2 
3 
4 
5 

6 
7 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 

18 
19 
20 

21 

22 
23 
24 
25 

26 
27. 
28. 
29 
30 
31 



0.1 
.1 
.1 

1.4 
.1 

.1 
1 

.1 
.1 
.1 



.1 
.1 

.3 
1.0 



2.0 
2.8 
3.4 
2.0 



0.1 
.3 
.1 
.1 
.1 

.1 
.5 
.5 

.5 
.5 



1.0 
2.9 
1.0 



.5 
.3 

.8 
.4 
.3 

.4 
.1 
.1 
.1 
.1 
2.0 



1.0 

.7 

.4 

1.1 

1.0 

.7 
3.0 
2.5 
2.0 

.7 

.5 

1.0 

.1 

.4 



1.5 

.2 

1.1 



0.1 



1.0 
.1 



0.2 
.5 
1.5 
1.2 
1.0 

.2 
.4 
.2 
.1 
.1 



0.1 

.1 

1.5 

1.0 

.7 

.2 
.4 
.2 
.4 
.5 

.4 
.4 
.4 
.4 

.7 

.2 
.2 
.3 
.5 
.2 

.2 
.2 



0.8 
1.0 
2.0 
3.0 



0.5 
.1 
.2 
.3 
.2 

.2 
.1 
.1 
.1 
.2 

.1 

.4 
.2 
.4 
.4 

.4 
1.5 

.8 
1.0 
1.8 

1.5 
1.2 
3.0 
1.1 



.4 
3.5 
2.5 
2.0 
1.1 
1.0 



1.0 
.5 

2.0 
.5 
.5 

.4 

.2 

.4 

1.4 

3.0 

2.5 

1.0 

1.0 

.4 

.2 

1.7 

2.6 

.10 

.6 

.5 

.5 
.6 



.3 
.3 
.9 

1.0 
.4 



1.0 
2.0 



.2 
.2 
.2 
.2 
.3 

.5 
.2 
.2 
.4 
1.2 

.3 
2.3 
3.5 
2.5 

.7 

2.6 
1.5 
.3 
.4 
.2 
.2 



Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 



charge for days for wh 



eh gage heights are missing estimated from diagram prepared from record of daily 



rainfall at the camp near station No. 50 
Monthly discharge at station No. 65 at 2,700-foot level, near Hilo, Hawaii, for 1911- 



Month. 



1911 
October 10-31.... 

November 

December 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.24 
.50 
.92 



.10 

.54 
.64 

.98 
.48 



Run-off 
(total in 
acre-feet). 



10.60 
29.90 
56.50 



6.15 
31.10 
39.40 
58.30 
29.50 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



0.10 
.45 
.35 
.51 

.87 
.90 
.79 



.56 



Run-off 
(total in 
acre-feet). 



5.95 
27.70 
21.50 
30.30 
53.50 
53.60 
48.60 



406.00 



Discharge measurements at station No. 66 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Feet. 

0.43 
(a) 


Sec.-ft. 
0.05 
(a) 


Nov. 7 


Feet. 
0.45 
.44 


Sec.-ft. 
0.02 


Sept. 28 


Dec. 11 












a Channel dry. 
Note.— Bed of stream of sand, gravel, and silt; shifting. One channel at all stages. 



ISLAND OF HAWAII. 



327 



Daily gageheight, in feet, at station No. 66 at 2, 700-foot level, near Hilo, Hawaii, for 1911-12. 
[Bomin, Bilikov, Goorko, BelayefE, Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.30 


0.50 
.59 












2 






0.60 
.60 
.50 

.48 

.45 

.48 






0.24 




0.44 






3 






0.52 
.55 
.59 

.68 










4 




(a) 

0.00 

"\'66" 

.00 
.00 

.00 
.00 
.42 
.30 
.10 

-.25 
-.50 








.61 
.53 

"".BO 

.48 
.53 
.55 

"".B2 

"\*52* 
.61 


"6.' 59" 

.60 
.72 
.51 
.50 

.47 
.58 
.54 
.58 
.54 

.57 
.49 
.44 
.42 


.50 

.48 

.44 
.40 

.42 

""."48" 

.44 
.56 
.52 
.70 

.60 

""."82* 
.89 
1.04 

""."93' 

'".*86* 
.62 

.60 
"".'96' 






5 


0.45 

.45 
.45 
.50 


0.85 


.28 


.61 

.52 
.55 

"".48" 


0.62 

""."43' 
.54 
1.00 

"\"80" 
.86 
.54 
.46 

1.02 

1.11 

.90 

.82 
.70 

.68 
.81 
.89 


0.50 


6 


.50 


7. 


.64 


8 






.30 


.80 


9 


.61 
.60 

.61 
.66 
.89 
.96 






.68 


10 




.70 

.59 
.65 
.64 
.55 
.56 


.58 




.54 


11 


.45 
.45 
.44 
.44 
.35 

.35 




.65 


.44 


12 


.53 




.40 


13 




.55 

.63 


.40 






.40 


.46 


15 


.52 


16 


.42 


.36 




.88 


17 


.62 
.95 

.62 
.63 

.61 
.59 
.62 




.61 


.46 


.62 


18 




.62 
.60 
.61 

.63 
.61 
.63 
.73 


.42 




.49 


19 


-.10 
-.10 

-.10 

-.09 

(a) 

.00 

.00 

.00 
.00 
.00 
.00 
.00 






.44 
.42 


.55 


.54 


20 




.45 


1.00 


21 


.40 


.46 
.44 
.42 
.40 

.38 
.36 
.35 
.35 


.80 


22 


.46 






1.11 


23 






.15 
.25 

.12 

.11 

.48 




24. 


.49 








25. 


.59 
.32 


.64 

.61 
.59 
.48 
.46 

.47 




.49 

.50 
.50 
.46 
.48 
.46 
.40 


.52 

.50 
.48 
.88 
.87 
.52 


.80 


26 


.81 
.74 
.70 


.44 
...... 


.51 
.60 
.51 


1.15 


27 




28 


.si 


29. 


.65 


30. . 








































1"" 







a Channel dry. 
Monthly discharge at station No. 66 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 

October 

November 

December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



a 0.02 
a. 06 
a. 05 



Run-off 
(total in 
acre-feet). 



1.23 
3.57 
3.08 



5.50 
5.30 
2.40 



Month. 



1912— Continued 

June 

July 

August 

September 

October : 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.03 
.04 
.05 
.05 
.07 
.07 
.06 



.05 



Run-off 
(total in 
acre-feet). 



1.80 
2.60 
2.80 
3.20 
4.40 
4.20 
3.60 



37.20 



a Estimated. 

Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge for 
periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
record at camp near station No. 50. 



328 WATER RESOURCES OF HAWAII, 1912. 

Discharge measurements at station No. 67 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. . 


Gage 
height. 


Dis- 
charge. 


Aug. 20 


Feet. 
0.42 
.24 


Sec.-ft. 
0.09 



Nov. 7 


Feet. 
0.35 
.36 


Sec.-ft. 
0.11 


Sept. 28 


Dec. 11 


.10 









Note.— Bed of stream of sand, gravel, and silt; shifting. One channel at all stages. 

Daily gage height, in feet, at station No. 67 at 2,700^-foot level, near Hilo, Hawaii, for 1912, 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.35 


0.40 
.49 












2 






0.50 
.40 
.34 
.35 

.31 
.35 






0.31 




0.41 






3 „ 






0.36 
.49- 
.46 

.52 










4 




0.20 

(B) 

—(a)" 

(B) 
(B) 

(«) 

.34 

.30 
.22 

.21 
.20 








.51 

.48 

""."42" 
.41 
.48 
.49 

"\*46" 
...... 

.45 


"6." 63" 

.64 
.65 
.49 
.49 

.46 
.51 
.46 
.48 
.46 

.50 
.47 
.41 
.40 


.44 
.40 

.38 
.33 
.35 

"".'46" 

.38 
.48 
.44 
.50 

.50 

**\"52* 

.57 
.68 

""."60" 

""."57" 
.42 

.41 
""."64" 






5 


0.40 

.40 
.40 


0.68 


.30 


.51 

.45 
.45 

"*."40" 


0.52 

"*\*46* 
.42 
.67 

*"\"52* 
.55 
.42 
.36 

.69 
.78 
.56 
.52 

.47 

.46 
.48 
.53 


0.40 


6 


.40 


7 


.40 


8 






.34 


.49 


9.. 




.49 

.48 

.48 
.52 
.69 
.79 






.42 


10 




.60 

.52 
.51 
.56 
.51 
.51 


.43 




.40 


11 


.40 
.40 
.40 
.40 
.35 

.35 




.61 


.34 


12 


.41 




.30 


13 




.45 

.77 


.30 


14 




.40 


.38 


15. . 


.40 


16 


.26 


.30 




.44 


17. . 


.51 
.79 
.51 
.54 

.46 
.46 

.48 




.62 


.40 


.40 


18. . 




.50 
.53 

.58 

.58 
.58 
.61 
.66 


.21 




.36 


19. . 


.34 
.34 

.34 
.34 
.32 
.32 
.31 

.31 
.31 
.25 
.22 
.21 






.35 

.34 


.50 


.42 


20 .. 




.39 


.60 


21 


.39 


.34 
.38 
.32 
.31 

.30 
.27 
.25 
.25 


.45 


22 


.37 






.69 


23.. 






.32 
.34 
.32 

.29 
.41 




24 


.39 








25 


.49 
.31 


.46 

.46 
.44 
.34 
.32 
.39 




.41 

.45 
.45 
.40 
.41 
.38 
.34 


.41 

.40 
.38 
.55 
.54 
.40 


.50 


26 


.72 
.63 
.61 


.39 
""."39" 


.48 
.51 

.48 


.78 


27 






.40 


29 


.41 












31. . 


















i ~ 



















b Channel dry. 

Daily discharge, in second-feet, at station No. 67 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dee. 


Day. 


Oct. 


Nov. 


Dec. 


1 




0.15 
.20 
.20 
.25 
.25 

.30 
.40 
.35 
.30 
.30 


0.15 
.15 
.15 
.15 
.15 

.15 
.15 
.15 
.20 
.15 


11 




0.25 
.25 
.40 
.35 
.30 

.25 
.30 
.30 
.30 
.30 


0.15 
.30 
.50 
.75 

1.50 

.90 
1.00 

.90 
1.05 
1.10 


21 


0.15 
.15 
.15 
.15 
.15 

.15 
.15 
.15 
.15 
.15 
.15 


0.30 
.30 
.30 
.30 
.25 

.20 
.15 
.15 
45 

.15 


0.85 


2 




12 




22 


.70 


3 




13 




23 


.60 


4 




14 




24 


.85 


5... 




15 




25 


.70 


6 




16 




26 


.70 


7... 




17 




27 


.65 


8 




18 , 




28 


.65 


9... 




19 

20 




29 


.70 


10... 




30 


.70 










31 


.70 









ISLAND OF HAWAII. 



329 



Daily discharge, in second-feet, at station No. 67 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.15 
.15 

.15 
.15 
.15 

.15 
.15 
.15 
.15 
.15 

.15 
.15 
.15 
.15 
.10 

.10 
.10 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


(a) 
a) 
(«) 

b) 

(a) 

(a) 
( a ) 
(°) 
(a) 
(o) 

(a) 

(a) 

0.05 
.05 
.05 

.05 
.05 
.05 
.05 
.20 

.35 
.50 
.70 
.40 
.25 

.05 
.05 
.05 
.05 


0.15 
.25 
.15 
.05 
.10 

.05 
.10 
.15 
.25 
.25 

.25 
.30 
.55 
.70 
.40 

.30 
.25 
.70 
.25 
.30 

.20 
.20 
.25 
.20 
.20 

.20 
.20 
.10 
.05 
.15 
.50 


0.20 
.15 
.10 
.25 
.20 

.30 
.60 
.50 
.50 
.40 

.30 
.25 
.35 
.25 
.25 

.30 
.40 
.25 
.30 
.40 

.35 
.35 
.40 
.50 
.50 

.60 
.45 
.40 
.30 
.30 




0.10 


0.15 
.25 
.40 
.30 
.25 

.20 
.20 
.15 
.15 
.10 

.40 
.30 
.20 
.65 
.50 

.45 
.40 
.30 
.10 
.10 

.10 
.10 
.20 
.30 
.15 

.20 
.20 
.15 
.15 
.15 
.10 


0.05 
.05 
.50 
.25 
.20 

.15 
.15 
.15 
.20 
.25 

.20 
.20 
.25 
.25 
.20 

.30 
.15 
.20 
.25 
.20 

.15 
.10 
.05 
.10 
.05 

.05 
.15 
.10 
.10 
.10 
.10 


0.30 
.40 
.60 
.70 
.45 

.45 
.45 
.25 
.25 
.20 

.20 
.25 
.20 
.20 
.20 

.25 
.25 
.15 
.15 
.10 

.10 
.15 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.20 


0.15 
.15 
.20 
.20 
.15 

.15 
.10 
.10 
.10 
.15 

.15 
.20 
.20 
.25 
.25 

.25 
.50 
.30 
.35 
.50 

.40 
.40 
.60 
.35 
.15 

.15 
.70 
.60 
.50 
.45 
.30 


0.30 
.20 
.50 
.30 
.30 

.20 
.20 
.15 
.50 
.70 

.60 
.30 
.35 
.15 
.10 

.55 
.65 
.35 
.30 
.25 

.20 
.20 
.30 
.20 
.15 

.15 
.15 
.35 
.30 
.15 


0.40 


2 


.50 


3 






.30 


4 






.30 


5 


0.55 


.05 


.15 


6 


.15 


7. . 


.15 


8 




.16 


.25 


9... 


.15 


10 


.20 




.15 


11. . . 


.10 


12 


.15 




.05 


13 


.05 


14 




.15 


.15 


15... 


.15 


16 


.05 


.05 


.20 


17 


.15 


18... 






.10 


19... 






.15 


20 




.15 


.40 


21 


.20 


22. 


.10 




.55 


23 


.70 


24 


.15 




.50 


25 


.25 


26 


.15 

""."is" 


.28 
.25 
.25 


.65 


27 


.40 


28 


.15 


29 


.15 


30 






.10 


31. 






.10 













a Channel dry. 

Note.— Daily discharge determined from poorly denned rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp near 
station No. 50. 

Monthly discharge at station No. 67 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 
October 21-31.... 

November 

December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.15 
.26 
.56 



.10 
.10 
.25 
.35 
.20 



Run-off 
(total in 
acre-feet). 



3.28 
15.80 



6.15 

5.75 

15.40 

20.80 

12.30 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.15 

.24 
.17 
.23 
.29 
.30 
.25 



.22 



Run-off 
(total in 
acre-feet). 



8.90 
14.80 
10.50 
13.70 
17.80 
17.90 
15.40 



159.00 



330 

Discharge measurements at station No. 68 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 



Aug. 20 . 
Sept. 28. 



Gage 
height. 



Feet. 

0.96 

.54 



Dis- 
charge. 



Sec.-ft. 

4.28 

.78 



Date. 



Nov. 7 . 
Dec. 11 



height. 



Feet. 
1.23 
1.15 



Dis- 
charge. 



Sec.-ft. 
5.66 
5.13 



Note.— Bed of stream of cobbles and bowlders with some exposed bedrock. Section near gage, rough. 
Station probably permanent. One channel at all stages. 

Daily gage height, in feet, at station No. 68 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.70 


1.32 
1.41 












2 






1.90 
1.60 
1.40 
1.10 

.91 
1.05 






0.70 




1.01 






3 






1.76 
1.69 
1.85 

1.90 










4 




0.20 
.20 

"""."is" 

.14 
.11 

.11 

.10 

1.00 

.96 

.68 

• .41 
.21 








1.77 
1.71 

"Tod" 

1.04 
1.17 
1.15 

"i'.n 
"Tio" 

1.84 


"T*87" 

1.59 
2.41 
1.60 
1.50 

1.39 
1.70 
1.47 
1.40 
1.21 

1.46 
1.20 
1.15 
1.04 


1.18 
.91 

.87 
.78 
.77 

"i.'oi" 

.95 
1.52 
1.26 
1.47 

1.42 

""i.76* 

2.01 
2.48 

"2A8 

"2. 24* 
1.86 

1.71 

"*2.*48" 






5 


0.80 

.80 
.80 
.81 


1.94 


.68 


1.48 

1.32 
1.40 

"i.'iT 


1.89 

*"i.'26* 
1.38 
1.30 

"2."02" 
2.08 
1.58 
1.30 

2.71 
3.00 
2.01 
2.19 
1.79 

1.70 
1.76 

1.88 


1.34 


6 


1.30 


7 


1.62 


8 






.70 


1.90 


9 


1.66 
1.65 

1.64 
2.02 
2.12 
2.26 






1.65 


10 




2.14 

2.01 
1.64 
1.79 
1.39 
1.41 


1.60 




1.36 


11 


.78 

.78 

.. .75 




2.23 


1.15 


12 


1.21 




1.00 


13 




1.41 
1.94 


.90 


14 


.75 
.65 

.55 




.79 


.99 


15... 


1.35 


16 


.90 


.72 




1.80 


17... 


1.86 
2.29 
1.69 
1.84 

1.64 
1.57 
1.66 




1.59 


1.07 


1.61 


18 




1.41 
1.51 
1.56 

1.58 
1.63 
1.64 
1.79 


.84 




1.22 


19 


.44 

.44 

.44 
.42 
.42 
.42 
.41 

.41 
.42 
.40 
.39 






1.00 
.99 


1.61 


1.80 


20 




1.18 


2.52 


21 


.93 


.78 
.81 

.74 
.68 

.60 
.59 
.54 
.53 


1.90 


22 


.82 






2.72 


23... 






.77 
.79 
.79 

.70 
1.51 




24 


.86 








25 


1.75 
1.41 


1.55 

1.41 

1.25 

.94 

.92 




1.14 

1.15 
1.18 
1.12 
1.10 
.96 
.80 


1.39 

1.29 
1.15 

' 1.68 
1.92 
1.34 


1.77 


26 


1.80 
1.79 
1.76 


.80 
"".*7o" 


1.78 
1.91 
1.78 


2.90 


27 




28 


1.50 


29. -. 


1.59 












31. 






























"* 







Daily discharge, in second-feet, at station No. 68 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


Day. 


Oct. 


Nov. 


Dec. 


1 




2.82 
4.46 
6.14 
7.91 
10.00 

11.10 
13.40 
15.20 
12.50 
10.00 


4.46 
4.30 
3.18 
2.26 
2.47 

2.54 

2.54 
2.75 
3.03 
2.75 


11 




8.00 
6.30 
11.40 
10.50 
9.80 

9.00 
10.40 
11.80 
12.90 
14.00 


2.47 

7.82 

14.50 

21.80 

24.90 

13.50 
15^50 
14.50 
15.50 
1G.90 


21 


3.90 
3.58 
3.34 
3.10 
2.89 

2.68 
2.47 
2.19 
1.91 
1.64 
1.40 


13.80 
13.60 
13.40 
13.30 
13.20 

9.20 
5.02 
5.10 
4.70. 
4.62 


11.50 


2. 




12 




22 


5.50 


3. . 




13 




23 


3.90 


4. . 




14 




24 


11.50 


5. . . 




15 




25 


8.20 


6 




16 




26 


7.28 


7 




17 




27 


7.10 


8 




18 




28 


7.10 


9. 




19 




29 


8.20 


10. . 




20 




30 


7.55 










31 


7.10 









ISLAND OF HAWAII. 



331 



Daily discharge, in second-feet, at station No. 68 at 

for 1912. 



', 7 '00-foot level, near Hilo, Hawaii, 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


2.40 
2.40 
2.40 
2.40 
2.40 

2.40 
2.40 
2.50 
2.40 
2.40 

2.30 
2.30 
2.00 
2.00 
1.40 

.80 
.60 
.50 
.40 
.40 

.40 
.40 
.40 
.40 
.30 

.30 
.40 
.30 
.30 
.30 
.30 


0.20 
.20 
.20 
.20 
.20 

.20 
.20 
.20 
.20 
.20 

.20 

.20 

3.90 

3.60 

1.60 

.50 
.30 
.20 
.20 
5.00 

10.00 
15. 00 
20.00 
15.00 
10.00 

7.20 
10.00 
10.00 
10.00 


10.00 

12.00 

9.00 

7.10 

4.70 

3.20 
4.30 
7.00 
9.60 
9.50 

9.40 
13.00 
14.00 
16.00 
15.00 

13.00 
12.00 
16.00 
10.00 
11.00 

9.40 
8.70 
9.60 
9.00 
8.50 

7.20 
5.90 
3.40 
3.30 
3.70 
15.00 


13.00 
12.00 
11.00 
10.00 
12.00 

12.00 
18.00 
16.00 
15.00 
14.00 

13.00 
9.40 

11.00 
7.00 
7.20 

7.20 

7.20 
7.20 
8.10 
8.60 

8.80 
9.30 
9.40 
11.00 
11.00 

11.00 
11.00 
11.00 
11.00 
10.00 


11.00 
11.00 
11.00 
11.00 
12.00 

13.00 
15.00 
14.00 
13.00 
9.00 

8.00 
5.60 
4.00 
4.00 
4.00 

3.10 
5.00 
2.70 
2.70 
2.60 

2.50 
2.50 
2.60 
2.80 
2.60 

2.40 
2.20 
2.00 
2.00 
1.80 
1.80 


1.70 
1.70 
1.70 
1.60 
1.60 

1.60 
1.65 
1.70 
1.80 
1.90 

2.00 
2.10 
2.20 
2.30 
2.00 

1.80 
2.70 
3.60 
4.40 
5.30 

6.30 
7.20 
8.10 
9.00 
10.00 

11.00 
12.00 
11.00 
9.00 
7.50 


6.50 
7.20 
7.40 
7.60 
7.80 

6.50 
7.10 
6.00 
4.80 
5.00 

15.00 
11.00 
7.20 
12.00 
10.50 

9.50 
8.90 
6.40 
3.90 
3.80 

4.00 
4.00 
4.00 
8.00 
5.00 

5.10 

5.30 
4.90 
4.70 
3.50 
2.40 


2.00 
1.70 
15.00 
11.00 
10.00 

5.00 
4.60 
4.20 
5.30 
5.10 

5.00 
4.90 
6.00 
7.10 
11.00 

6.00 
4.50 
6.80 
9.10 
5.00 

3.30 

3.00 
2.20 
2.30 
2.30 

1.70 
8.10 
5.00 
4.00 
3.00 
3.00 


10.00 
14.00 
16.00 
20.00 
12.00 

8.90 
17.00 
9.00 
8.00 
7.50 

7.00 
10.00 
7.70 
7.10 
5.60 

7.60 
5.50 
5.10 
4.20 
3.20 

2.30 
2.50 
2.00 
1.60 
1.30 

1.10 

1.10 

.80 

.70 

4.00 


3.00 
4.00 
4.60 
5.30 
3.20 

2.90 
2.30 
2.20 
3.10 
4.00 

3.50 

8.20 
6.00 
7.70 
7.60 

7.30 
20.00 
11.00 
13.00 
18.00 

18.00 
15.00 
20.00 
15.00 
12.00 

10.00 
20.00 
20.00 
20.00 
18.00 


15.00 
10.00 
18.00 
15.00 
12.00 

5.00 
6.00 
6.90 
6.30 
15.00 

15.00 
13.00 
14.00 
8.80 
6.30 

20.00 
23.00 
13.00 
15.00 
11.00 

10.00 
11.00 
12.00 
10.00 
7.00 

6.20 
5.10 
9.80 
12.00 
6.60 


10.00 


2 


15.00 




10.00 


4 


10.00 


5 


6.60 


6 


6.30 


7 


9.20 


8 


12.00 


9 


9.50 


10 


6.80 


11 


5.10 


12 


3.90 


13 


3.10 


14 


3.80 


15 


6.70 


16 


11.00 


17 „ 


9.10 


18 


5.60 


19 


11.00 


20 


18.00 


21 


12.00 


22 


20.00 


23 


25.00 


24 


18.00 


25 


11.00 


26 


22.00 


27 


15.00 


28 


8.00 


29 


8.90 


20 


5.00 


31 


12.00 .. 


5.00 




1 1 



Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 68 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 
October 21-31.... 

November 

December 

1912, 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



2.65 
9.79 

8.47 



1.31 
3.27 
9.34 
10.70 
5.97 



Run-off 
(total in 
acre-feet). 



57.60 
582 
520 



8.06 
188 
574 
637 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



4.55 
6.61 
5.39 
6.76 
10.20 
11.30 
10.40 



7.67 



Run-off 
(total in 
acre-feet). 



271 
406 
331 
402 
627 
672 
640 



5,120 



Discharge measurements at station No. 69 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 21 


Feet. 
0.71 
.64 


Sec.-ft. 
1.28 
.49 


Nov. 8 . 


Feet. 
0.80 
.75 


Sec.-ft. 
2.84 


Sept. 28 


Dec. 11.. .. 


1.80 









Note.— Bed of stream of cobbles and bowlders with some exposed bedrock. Section near gage, rough, 
but probably permanent. One channel at all stages. 



332 WATEE RESOURCES OF HAWAII, 1912. 

Daily gage height, in feet, at station No. 69 at 2,700-foot level, near Kilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.60 


0.75 

.87 












2 






0.92 

.85. 
.82 

.72 

.70 

,84 






0.69 




0.70 






3 






0.85 
.92 

.88 

.91 










4 




0.55 
.54 

"".*54" 
.54 
.52 

.52 
.51 
.70 

.65 
.60 

.60 
.59 








.84 
.83 

""*."79" 

.74 
.80 

. .81 

""."80* 

'"."•83" 
.87 


"6." 96" 

.87 

1.08 

.84 

.80 

.75 
.84 
.81 
.84 
.80 

.83 
.75 
.72 
.70 


.72 

.69 

.68 
.66 
.66 

""."76" 

.68 
.74 
.70 
.80 

.80 

'"."88" 

.94 

1.08 

"i'62" 

"i.'oo" 

.92 

.88 

"i.'io' 






5 


0.70 

.70 
.70 

.72 


1.22 


.60 


.88 

.78 
.81 

""".'so' 


0.90 

"".n 

.80 
1.16 

""."98" 

1.02 

.84 

.79 

1.22 

1.40 

1.02 

1.00 

.96 

.90 
.89 
.94 


0.80 


6 


.80 


7 


.80 


8 






.66 


.90 


9 


.86 

.86 

.84 
1.02 

.96 
1.01 






.85 


10 




1.00 

.95 
.98 
1.04 
.99 
.91 


.72 




.85 


11 


.68 
.68 
.68 
.68 
.65 

.64 




1.03 


.78 


12 


.71 




.76 


13 




.si 

.91 


.70 


14 






.75 








.78 


16 


.62 






.90 


17 


.94 

1.04 

.94 

.96 

.82 
.80 

.84 






.88 


.70 


.71 






.89 
.93 
.91 

.96 

.93 

.96 

1.10 


.59 






19 


.62 
.62 

.62 
.61 
.60 
.60 
.60 

! .60 
.60 
.56 
.55 
.55 




.70 


.72 
.71 


.81 


.81 


20 


1.00 


21 


""."65" 


.66 


.70 


.68 
.70 
.68 
.66 

.64 
.62 
.63 
.62 


.82 


22 


1.14 


23 






.68 
.72 
.70 

.65 

.81 




24 


.7i 










.81 
.69 


.85 

.84 
.81 
.71 
.68 
.72 


.70 


.81 

.78 
.85 
.72 
.73 
.71 
.70 


.82 

.81 

.81 
.90 
.93 

.83 


.87 


26 


1.10 
1.03 
1.00 


.71 


1.19 


27 






.68 


.7i 

.88 
.71 


.si 


29 


.80 


30 








31 





































Daily discharge, in second-feet, at station No. 69 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




1.8 
1.8 
1.5 
1.5 
1.5 

1.5 
1.5 
2.4 
2.9 

2.4 


11 




1.8 
5.3 
9.2 
14.6 
26.0 

18.2 
20.0 
18.5 
20.0 
21.5 


21 


7.1 
6.7 
6.5 
6.3 
6.1 

3.1 
2.7 
2.9 
2.4 

1.8 


12.5 


2 




12 




22 ... 


6.9 


3 




13 


6.5 

5.5 
4.9 

4.5 
5.3 

6.1 
6.9 

7.5 


23 


6.5 


4 




14 


24 


12.5 


5 




15 


25 


8.5 


6 




16 


26 


7.5 


7 




17 


27 


6.5 


8 




18... 


28 


6.5 


9 




19 


29 


6.5 


10 




20 


30 


7.5 








31 


6.5 











ISLAND OF HAWAII. 



333 



Daily discharge, in second-feet, at station No. 69 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1.... 


1.20 
1.20 
1.20 
1.20 
1.20 

1.20 
1.20 
1.50 
1.40 
1.20 

1.00 
1.00 
1.00 
1.00 
.70 

.70 
.60 
.50 
.40 
.40 

.40 
.30 
.20 
.20 
.20 

.20 
.20 
.10 
.10 
.10 
.10 


0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
1.20 
.70 
.20 

.20 
.20 
.20 
.20 
.1.50 

10.00 
18.00 
20.00 
12.00 
2.90 

1.10 

1.00 
1.00 
1.00 


3.00 
4.90 
3.60 
3.10 
1.50 

1.20 
3.40 
3.60 
3.80 
3.80 

3.40 
6.90 
5.70 
6.70 
6.20 

5.80 
5.30 
7.30 
5.30 
5.70 

3.10 
2.70 
3.40 
3.50 
3.60 

3.40 
2.90 
1.40 
1.00 
1.50 
12.00 


6.00 
4.00 
3.60 
4.90 
4.10 

4.70 
12.00 
11.00 
10.00 

6.50 

5.50 
6.10 
7.30 
6.30 
4.70 

4.50 
4.50 
4.30 
5.10 
4.70 

5.70 
5.10 
5.70 
8.50 
8.50 

8.50 
7.10 
6.50 
5.00 
6.00 


6.00 
7.00 
8.00 
10.00 
12.00 

9.00 
5.00 
3.00 
2.00 
1.50 

1.40 

1.30 

1.00 

.80 

.60 

.40 
.30 
.20 
.40 
.50 

.60 

.70 

2.50 

1.40 

1.40 

1.40 

1.20 

1.00 

.80 

.60 

.40 


0.20 
.20 
.20 
.20 
.20 

.20 
.50 
.80 
.80 
.80 

.80 
.90 
.90 
.90 
1.00 

1.00 
1.00 
1.20 
1.20 
1.00 

.80 

.90 

1.00 

1.10 

1.20 

1.20 
1.30 
1.30 
4.10 
1.40 


2.00 
4.00 
12.00 
7.00 
4.10 

2.40 
2.90 
2.80 
2.70 
2.50 

7.10 
5.00 
2.90 
4.70 
4.50 

4.30 
4.10 
2.80 
1.50 
1.40 

1.50 
1.50 
2.00 
3.00 
2.90 

2.40 
3.60 
1.50 
1.60 
1.40 
1.20 


1.20 
1.10 
5.00 
3.40 
3.20 

2.90 
2.60 
1.80 
2.70 
2.90 

2.80 
2.70 
3.00 
3.20 
4.00 

2.00 
1.20 
2.00 
2.90 
2.00 

1.20 
1.10 
1.00 
1.50 
1.20 

.70 
2.90 
2.00 
1.80 
1.50 
2.00 


4.00 
5.00 
8.00 
10.00 
4.50 

4.00 
8.10 
3.40 
2.70 
2.40 

2.00 
3.40 
2.90 
3.40 
2.70 

3.20 
2.00 
1.50 
1.20 
1.10 

1.00 

1.20 

1.00 

.80 

.70 

.60 
.40 
.50 
.40 
.60 


0.90 
1.20 
1.40 
1.50 
1.10 

1.00 

.80 

.80 

1:00 

1.20 

1.00 
1.80 
1.20 
2.70 
2.70 

2.70 
9.00 
4.10 
5.30 
8.10 

8.00 
6.90 
14.00 
6.50 
4.90 

4.10 

20.00 

16.00 

12.00 

8.50 

5.00 


6.00 
6.00 
12.00 
6.00 
4.50 

3.30 
2.10 
2.70 
10.00 
15.00 

12.00 
6.10 
6.90 
3.40 
2.60 

12.00 
17.00 
6.90 
6.50 
5.70 

4.50 
4.30 
5.30 
4.20 
3.10 

2.90 
2.90 
4.50 
5.10 
3.20 


8.00 


2 


12.00 


3 


10.00 


4 


6.00 


5 


2.70 


6 


2.70 


7. . 


2.70 


8 


4.50 


9 


3.60 


10 


3.60 


11 


2.40 


12 


2.10 


13 


1.20 


14 


1.90 




2.40 


16 


4.50 


17 


1.30 


18 


1.50 


19 


2.90 


20 


6.50 


21 


3.10 


22 


9.50 


23 


17.00 


24 


11.00 




4.00 


26 


11.00 


27 


10.00 


28 


2.90 


29 


2.70 


30 


2.00 


31 


2.00 







Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 69 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 
November 13-30. 
December 

1912, 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



5.15 
8.45 



.71 

2.50 
4.15 
6.21 
2.66 



Run-off 
(total in 
acre-feet). 



184.00 
518.00 



43.70 
144. 00 
256. 00 
370. 00 
164.00 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



0.94 
3.33 
2.24 
2.76 
5.01 
6.22 
5.09 



Run-off 
(total in 
acre-feet). 



55.90 
205.00 
138. 00 
164.00 
308. 00 
370. 00 
313.00 



2,530.00 



334 



WATER RESOURCES OF HAWAII, 1912. 



Discharge measurements at station No. 70 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 21 


Feet. 
0.75 
.73 


Sec.-ft. 
0.49 

.17 


Nov. 8 


Feet. 
0.97 
.90 


Sec.-ft. 
0.93 


Sept. 28 


Dec. 11 


.28 









Note. — Bed of stream of gravel with some small cobbles; probably shifting. One channel at all stages. 

Daily gage height, in feet, at station No. 70 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, BelayefE, Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 -.. 












0.64 


0.80 
.91 












2 






0.95 
.90 

.88 
.80 

.78 
.86 






0.70 




0.80 






3 






0.98 
1.15 

.99 

.79 










4 




0.62 
.61 

"**60 
.60 
.59 

.59 
.56 
.75 
.70 
.65 

.64 
.61 








.95 
.90 

""."88" 

.78 
.87 
.89 

*.8G' 

""."84" 
.85 


"i."66" 
.97 

1.09 
.96 
.91 

.87 
.94 
.89 
.90 
.86 

.90 

.88 
.86 
.85 


.84 
.81 

.80 

.78 
.74 

"".8G" 

.78 
.86 
.82 
.90 

.88 

"".'96' 
1.02 
1.21 

"i.62" 

"i.ii" 
1.02 

.94 
"i."2i" 






5 


0.80 

.80 
.80 
.81 


1.39 


.59 


.95 

.82 
.88 

""."si" 


0.94 

""."94" 

.95 

1.10 

i.'i2" 

1.14 
1.01 

.94 

1.28 
1.41 
1.13 
1.12 
1.10 

1.04 
1.02 
1.06 


0.95 


6 


.95 


7 


.52 


8 






.60 


1 00 


9 


.85 
.84 

.86 
1.08 
1.32 
1.36 






94 


10 




1.06 

1.09 
1.04 
1.08 
.90 
.90 


.95 




91 


11 


.75 
.74 

.74 
.74 
.71 

.71 




1.04 


.92 


12 


.89 




.90 


13 




.89 
1.01 


.88 


14 




.70 


.90 


15 -- -- 


.91 


16 


.68 


.60 




1.00 


17 


.94 
1.34 
.88 
.92 

.86 

.87 
.84 




.85 


.79 


.81 


18 




.95 

.99 

1.04 

1.04 
1.03 
1.04 
1.19 


.78 




.90 


19 


.70 
.70 

.70 
.69 
.68 
.68 
.66 

.66 
.66 
.65 

.64 






.78 
.76 


.86 


1.00 


20 




.78 


1.10 


21 


.74 


.83 
.84 
.81 
.79 

.77 
.74 
.72 

.72 


1.02 


22 


.76 






1.19 


23 






.72 
.75 

.74 

.71 

.84 




24 


.78 








25 


.90 
.71 


.85 

.93 

.87 
.82 

.88 




.82 

.79 
.83 
.78 
.75 
.74 
.70 


.95 

.92 
.92 
1.02 
1.02 
.98 


.80 


26 


1.31 
1.28 
1.26 


.75 
""."70" 


.78 
.90 
.74 


1.18 


27 




28 


1.00 




.97 


30 

















































Daily discharge, in second-feet, at station No. 70 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




0.8 
.8 
.6 
.4 
.4 

.4 
.4 
.6 
.8 
.6 


11 




0.5 
.8 
1.2 
1.5 
5.6 

2.6 
2.8 
2.8 
2.8 
2.8 


21 


1.9 
1.9 
1.8 
1.8 
1.8 

1.0 

. .9 

1.0 

.9 

.8 


0.9 


2... 




12 




22 


.6 


3 




13 


1.4 
1.4 
1.3 

1.2 
1.3 
1.4 
1.6 
1.9 


23 


.6 


4 




14 


24 


.9 


5... 




15 


25 


.6 


6 




16 


26 


.6 


7 




17 


27 


.4 


8 . 




18 


28 


.4 


9 




19 


29 


.6 


10 




20 


30 


.5 








31 


.4 











ISLAND OF HAWAII. 



335 



Daily discharge, in second-feet, at station No. 70 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.40 
.40 
.40 
.40 
.40 

.40 
.40 
.45 
.40 
.30 

.15 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.05 
.05 
.05 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.15 
.10 
.10 

.05 
.05 
.05 
.10 
1.00 

2.00 
3.00 
4.50 
2.00 
.80 

.10 
.10 
.10 
.10 


0.50 
1.05 
.80 
.70 
.40 

.35 
.65 
.65 
.65 
.56 

.65 
1.80 
3.35 
3.60 
2.00 

1.50 
1.00 
1.50 
.70 
.90 

.^5 
.70 
.55 
.60 
.60 

.95 
.70 
.50 
.35 
.70 
3.00 


2.00 
1.50 
1.20 
2.20 
1.25 

.35 
3.50 
3.00 
2.50 
1.65 

1.85 
1.55 
1.80 
.80 
.80 

.90 
1.00 
1.05 
1.25 
1.55 

1.55 
1.50 
1.55 
1.45 
2.30 

3.25 

3.05 
2.90 
2.00 
1.50 


2.00 
2.00 
2.00 
3.00 
3.85 

3.00 

2.00 
1.20 
1.00 
1.05 

.80 
.75 
.60 
.40 
.20 

.10 
.20 
.35 
.30 
.30 

.30 
.30 
.50 
.35 
.30 

.30 
.20 
.10 
.10 
.10 
.10 


0.05 

.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.10 
.10 
.10 
.10 

.05 
.10 
.10 
.20 
.35 

.35 
.35 
.35 
.35 
.35 

.35 
.80 
.20 
.20 
.20 


0.40 
.85 
2.00 
1.50 
1.05 

.50 
.70 
.60 
.45 
.50 

1.55 
1.20 
.75 
1.35 
1.00 

.80 
.60 
.40 
.35 
.25 

.30 
.40 
.50 
.80 
.50 

.35 
.55 
.35 
.25 
.20 
.10 


0.10 
.10 
1.50 
1.05 
.80 

.70 
.70 
.35 
.70 

.75 

.70 
.65 
.60 
.55 
.60 

.40 
.35 
.40 
.65 
.30 

.20 
.20 
.15 
.25 
.20 

.10 
.55 
.40 
.30 
.20 
.20 


1.00 
2.00 
3.00 
4.00 
1.30 

1.15 
1.85 
1.10 

.85 
.80 

.70 
1.00 
.75 
.80 

.65 

.80 
.70 
.65 
.60 
.60 

.55 
.55 
.45 
.35 
.30 

.30 
.20 
.15 
.15 
.40 


0.40 

.40 
.50 
.55 
.45 

.40 
.35 
.35 
.40 
.40 

.35 
.65 
.50 

.80 
.80 

.70 
1.50 

.80 
1.45 
2.55 

1.50 
1.45 
3.00 
1.95 
1.45 

1.00 
4.50 
4.00 
3.00 
2.55 
2.00 


2.00 
2.00 
3.00 
2.00 
1.00 

1.00 
1.00 
1.05 
1.90 
3.50 

3.00 
2.00 
2.15 
1.35 
1.00 

3.05 
3.95 
2.10 
2.00 
1.90 

1.55 

1.40 
1.65 
1.30 
1.05 

.90 
.90 
1.40 
1.40 
1.20 


2.00 


2 


3.50 


3 


2.00 


4 


1.50 


5 


1.05 


6 


1.05 


7 


1.10 


8 


1.30 


9 


1.00 


10 


.85 


11 

12 


.90 
.80 


13 


.70 


14 


.80 


15 


.85 


16 


1.30 


17 


.45 


18 

19 


.80 
.30 


20 


1.90 


21 


1.40 


22 


2.45 


23 


4.00 


24 


3.00 


25 


.40 


26 


2.40 


27 


3.00 


28 


1.30 


29 


1.15 


30 


.60 


31 


.50 







Note.— Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp near 
station No. 50. 

Monthly discharge at station No. 70 at 2,700-foot level, near Hilo, Hawaii, for 1911-1912. 



Month. 



1911 
November 13-30. 
December 

1912 

January 

February. . . : — 

March 

April 

May 



discharge 
in second- 
feet. 



1.40 
1.15 



.19 

.51 

1.05 

1.76 



Run-off 
(total in 
acre-feet). 



50.40 
71.10 



11.70 
29.30 
64.60 
105.00 
55.30 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 



0.18 

.68 

.47 

.92 

1.31 

1.79 

1.43 



,93 



Run-off 
(total in 
acre-feet). 



10.70 
41.80 
28.90 
54.70 
80.60 
107.00 
87.90 



678.00 



Discharge measurements at station No. 71 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 21 


Feet. 
0.61 
.60 


Sec.-ft. 



Nov. 8 


Feet. 
0.65 
.60 


Sec.-ft. 
0.05 


Sept. 28 


Dec. 11 . . 


.07 











Note.— Bed of stream of silt, sand and gravel; shifting. One channel at all stages. 



336 WATER RESOURCES OP HAWAII, 1912. 

Daily gage height, in feet, at station No. 71 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.58 


0.62 
.71 












2 






0.71 
.70 
.60 
.65 

.62 
.76 






0.58 




0.63 






3 






0.77 

.88 
.75 

1.08 








_ 


4 




(a) 

(a) 

W 
a 

(a) 

(a) 
(a) 
0.60 
.60 
.59 

.59 
.59 








.68 
.65 

"".'64* 
.62 
.68 
.71 

""."68' 

""64' 
.67 


"6." 69' 

.69 
.78 
.69 
.65 

.61 
.68 
.62 
.64 
.61 

.64 
.61 
.59 

.58 


.67 
.62 

.62 
.60 
.61 

"".~W 

.57 
.62 
.61 
.63 

.63 

"'"."68" 
.72 

.88 

'.72' 

'"."72" 

.66 

.63 
"".'74' 






5 


0.65 

.65 
.65 

.68 


1.08 


.50 


.78 

.75 
.70 

""".'68' 


0.71 

""".*67" 
.62 

.76 

"*."70" 

.71 
.64 
.64 

.76 

.85 
.72 
.70 
.70 

.67 
.66 
.70 


0.62 


6 

7 


.60 
.60 


8 






.50 


.62 


9 . 


.83 
.81 

.88 

.98 

.94 

1.03 






.62 


10 .. 




.74 

.71 

.74 
.72 
.71 
.75 


.78 




.61 


11 


.65 
.64 
.64 
.64 
.64 

.64 




.72 


.60 


12 


.73 




.60 


13 




.71 
.71 


.54 


14 




.60 


.59 


15 


.60 


16 


.60 


.52 




.62 


17 


1.11 

1.11 

.91 

1.03 

.90 
.85 
.90 




.70 


.53 


.52 


18 




.78 
.79 
.79 

.79 
.80 
.82 
.90 


.58 




.60 


19 


.64 
.64 

.64 
.62 
.61 
.61 
,60 

.60 
.61 
.58 
.55 
.54 






.64 
.65 


.62 


.62 


20 




.60 


.70 


21 


.64 


.58 
.81 
.64 
.64 

.62 
.61 
.61 
.60 


.66 


22 


.65 






.75 


23 






.61 
.65 
.64 

.60 
.65 




24 


.68 








25 


.95 

.78 


.80 

.72 
.67 
.64 
.62 
.68 




.69 

.54 
.65 
.60 
.62 
.61 
.59 


.64 

.64 
.62 
.66 
.65 
.62 


.65 


26 


.91 

.89 
.85 


.62 
'"'.'59* 


.61 
.70 
.61 


.82 


27 




28 


.62 


29 


.62 


30 










31 














































a 


Channt 


ldry. 















Daily discharge, in second-feet, at station No. 71 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




0.05 
.05 
.05 
.05 
.10 

.10 
.10 
.10 
.15 
.10 


11 




0.10 
.15 
.15 
.35 

1.00 

.30 
.40 
.30 
.40 
.45 


21 


0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 


0.30 


2 




12 




22 


.30 


3 




13 


0.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 


23 


.30 


4.. . 




14 


24 


.30 


5... 




15 


25 


.25 


6... . 




16 


26 


.25 


7 ... 




17 


27 


.25 


8 




18 


28 


.25 


9 




19 


29 


.25 


10 




20 


30 


.25 








31 


.25 











ISLAND OF HAWAII. 



387 



Daily discharge, in second-feet, at station No. 71 at 2,700-foot level, near Eilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.05 
.05 
.05 

.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


fa) 

(«). 
(a) 
(a) 
(■) 

(a) 
(a) 
(a) 
(a) 
(a) 

(a) 

(a) 

0.05 
.05 
.05 

.05 
.05 
.05 
.05 
.10 

.30 
.50 
.70 
.60 
.40 

.20 
.20 
.10 
.10 


0.10 
.10 
.10 
.05 
.05 

.05 
.15 
.20 
.25 
.20 

.30 
.40 
.35 
.45 
.50 

.50 
.50 
.50 
.30 

.45 

.30 
.25 
.30 
.20 
.20 

.10 
.10 
.05 
.05 
.10 
.50 


0.30 
.20 
.15 
.30 
.15 

.50 
.60 
.50 
.40 
.15 

.10 
.15 
.10 
.10 
.15 

.15 
.20 
.20 
.20 

.20 

.20 
.20 
.20 
.30 
.30 

.30 
.30 
.25 
.20 
.10 


0.10 
.20 
.30 
.40 
.50 

.40 
.30 
.20 
.20 
.20 

.20 
.15 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.20 
.10 
.10 

.05 
.05 
.05 
.05 
.05 
.05 


0.05 

"'.05' 
'"'.'65' 

.05 
.10 
.05 


0.05 
.10 
.20 
.20 
.20 

.15 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.05 
.05 

.05 
.05 
.05 
.10 
.10 

.10 
.10 
.05 
.05 
.05 
.05 


0.05 
.05 
.20 
.10 
.10 

.10 
.05 
.05 
.10 
.10 

.10 
.10 
.10 
.05 
.10 

.10 
.10 
.10 
.05 
.05 

.05 
.05 
.05 
.10 
.05 

.05 
.10 
.10 
.10 
.10 
.10 


0.30 
.40 
.50 
.60 
.10 

.10 
.20 
.10 
.10 
.10 

.05 
.10 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 


0.10 
.05 
.10 
.10 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.30 
.20 
.10 
.10 

.20 
.30 
.60 
.30 
.10 

.05 
.70 
.50 
.30 
.15 
.10 


0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.05 
.15 
.30 

.20 
.10 
.10 
.05 
.05 

.15 
.30 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.05 

.05 
.05 
.10 
.05 
.05 


0.20 


2 


.50 


3 


.20 


4 


.10 


5 


.05 


6 


.05 


7 


.05 


8 


.05 


9 


.05 


10 


.05 


11 


.05 


12 


.05 


13 


.05 


14 


.05 


15 


.05 
.05 


17 


.05 




.05 


19 


.05 


20 


.10 


21 


.10 


22 


.15 


23 


.30 


24 


.10 


25 


.05 


26 


.20 


27 


.20 


28 


.05 


29 


.05 




.05 


31 


.05 







a Channel dry. 

Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfal 1 record at camp near 
station No. 50. 

Monthly discharge at station No. 71 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 
November 13-30. 
December 

1912 

January 

February 

March 

April 

May 



discharge 
in second- 
feet. 



0.10 
.24 



.07 
.12 
.25 
.24 
.15 



Run-off 
(total in 
acre-feet). 



3.57 
14.70 



4.30 
6.90 
15.40 
14.30 
9.22 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November , 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.05 
.10 
.08 
.12 
.16 
.11 
.10 



Run-off 
(total in 
acre-feet). 



2.98 
6.15 
4.92 
7.14 
9.84 
6.55 
6.15 



93.80 



14694°— wsp 336—14- 



-22 



338 



WATER RESOURCES OF HAWAII, 1912. 



Discharge measurements at station No. 72 at 2,700-foot level, near Kilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 21 


Feet. 
0.91 

.88 


Sec. -ft. 



Nov. 8 


Feet. 
1.00 
.96 


Sec.-ft. 
0.04 


Set)t. 28 


Dec. 11 














Note. — Bed of stream of silt, sand, and gravel; shifting. One channel at all stages. 

Daily gage height; in feet, at station No. 72 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.82 


0.95 
1.07 












2 






1.01 

1.00 

.96 

.95 

.92 
1.08 






0.90 




0.96 






3 






1.02 

.95 

1.05 

1.26 










4 




(a) 
(«) 

-(a)" 

(a) 
(a) 

(«) 

(a) 

0.92 
.90 

.84 

(a) 
(a) 








1.09 
1.05 

"".'99" 

.95 

1.00 

1.06 

'i."66' 
'"."99' 

1.01 


"i.'os" 

1.07 

1.11 

1.02 

.99 

.96 
1.03 

.99 
1.00 

.97 

.99 
.97 
.94 
.91 


1.00 
.94 

.90 

.88 
.89 

""'."98" 

.94 
1.02 
1.00 
1.02 

1.02 

"i."08" 
1.15 
1.28 

"i.'io" 
'i.'io' 

.98 
.94 

"i.'io* 






5 


0.98 

.98 

.98 

1.00 


1.38 


.79 


1.09 

1.05 
1.00 

"".91 


1.00 

""99' 
1.00 
1.15 

"i.'os" 

1.-16 
1.01 
.99 

1.12 
1.25 
1.10 
1.08 
1.08 

1.02 
1.02 
1.09 


1.00 


6 


1.00 


7 


1.00 


8 






.80 


1.00 


9 


.95 
1.02 

1.09 
1.16 
1.35 
1.42 






1.00 


10 




1.00 

1.05 
1.04 
1.03 
1.00 
1.01 


.95 




1.00 


11 


.98 
.98 
.96 
.95 
.95 

.95 




1.07 


.96 


12 


.93 




.95 


13 




1.00 
1.01 


.95 


14 




.90 


.96 


15 


1.00 


16 


.88 


.77 




1.02 


17 


.99 
1.42 
1.12 
1.15 

1.11 
1.07 
1.11 




.79 


.92 


1.00 


18 




1.02 
1.03 
1.03 

1.06 
1.11 
1.14 
1.20 


.si 




1.00 


19 


.94 
.94 

.94 
.92 
.91 
.91 
.90 

.90 
.90 

.88 
.85 
.84 






.72 
.71 


.99 


1.00 


20 




.71 


1.12 


21 


.90 


.89 
.91 
.90 
.90 

.90 
.89 
.89 
.93 


1.02 


22 


.90 






1.20 


23 






.88 
.92 
.90 

.85 
.95 




24 


.95 








25 


1.00 

.88 


1.04 

1.01 
.96 
.93 
.91 
.99 




.92 

.99 
.94 
.92 
.95 
.92 
.90 


1.00 

.98 

.99 

1.03 

1.04 

1.01 


1.05 


26 


1.30 
1.21 
1.21 


.90 

.89 


.68 
.90 

.68 


1.09 


27 




28 


1.00 


29 


1.00 


30 




31 







































Monthly discharge at station No. 



a Channel dry. 
at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



November. 
December. 



January . . 
February. 

March 

April 

May 



1912. 



Mean 
discharge 
in second- 
feet. 



00. 10 
a. 15 



.02 
.02 
.15 
.15 



Run-off 
(total in 
acre-feet). 



5.95 
9.22 



1.00 
1.20 
9.30 
8.90 
4.00 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 



The year. 



Mean 
discharge 
in second- 



0.05 
.07 



.12 
.11 
.10 



Run-off 
(total in 

acre-feet). 



3.00 
4.20 
4.80 
5.40 
7.50 
6.70 
5.90 



61.90 



a Estimated. 

Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
record at camp near station No. 50. 



ISLAND OF HAWAII. 



339 



Discharge measurements at station No. 73 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 



Aug. 21. 
Sept. 20. 



height. 



Feet. 
0.74 
.60 



Dis- 
charge. 



Sec-ft. 

0.39 





Date. 



Nov. 8. 
Dec. 28. 



Gage 
height. 



Feet. 

0.88 

.84 



Dis- 
charge. 



Sec-ft. 
0.40 
1.00 



Note.— Bed of stream of silt, sand, and gravel; shifting. One channel at all stagesr 

Daily gage height, in feet, at station No. 73 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.55 


0.78 

.87 












2 






1.08 

1.01 

.94 

.80 

.75 

.86 






0.68 




0.79 






3 






1.09 
1.42 
1.14 

1.24 










4 




0.55 
.55 

""."52" 

.52 
.51 

.51 
.50 
.75 
.64 
.62 

.61 
.60 








.92 

.88 

""."si" 

.80 
.90 
.91 

""."89" 

"'"."88" 
.97 


"i.'oo" 
1.00 

1.09 
.91 
.89 

.86 
.97 
.94 
.95 
.90 

.94 

.88 
.81 
.76 


.80 

.74 

.72 
.68 
.66 

"".'76' 

.67 
.84 
.80 
.87 

.84 

".85" 

1.01 
1.30 

"i*08" 

""i."06" 

.82 

.76 

"i.'is" 






5 


0.75 

.75 
.75 
.80 


1.15 


.50 


.90 

.88 
.83 

'".'73' 


0.95 

""."si" 

.85 
1.25 

"i.'oi' 

1.16 

.88 
.82 

1.35 
1.51 
1.16 
1.02 
1.01 

.95 
.94 
.99 


0.82 


6 


.82 


7 


.85 


8 






.53 


.94 


9 


.86 
.84 

.86 
1.15 
1.51 

1.56 






.91 


10 




1.40 

1.30 
1.37 
1.28 
.90 
.94 


.81 




.81 


11 


.70 
.70 
.68 
.68 
.65 

.65 




1.11 


.78 


12 


.79 




.75 


13 




.85 
.99 


.70 


14 




.60 


.72 


15 


.75 


16 


.60 


.51 




.90 


17 


.96 
1.56 

.83 
1.02 

.82 
.80 
.82 




.90 


.78 


.80 


18 




.95 
.98 

.98 

.98 

.98 

.98 

1.00 


.56 




.82 


19 


.65 
.64 

.64 
.64 
.62 
.62 
.61 

.61 
.62 
.58 
.56 
.55 






.79 

.78 


.88 


.91 


20 




.73 


1.16 


21 


.72 


.74 
.75 
.69 
.66 

.64 
.64 
.61 
.64 


.92 


22. 


.65 






1.20 


23 






.72 
.75 
.74 

.65 

.85 




24 


.66 








25 


.97 

.84 


.85 

1.00 

.98 
.79 
.76 
.86 




.74 

.80 
.75 
.72 
.75 
.72 
.68 


.84 

.82 

.82 

1.00 

1.00 

.85 


.84 


26 


1.08 
1.03 
1.01 


.62 
"".*60" 


.81 
.91 

.81 


1.00 


27 




28 


.83 


29 


.84 


30 

















































Daily discharge, in second-feet, at station No. 73 at 

for 1911. 



,700-foot level, near Hilo, Hawaii, 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




0.1 
.1 
.1 
.1 
.1 

.1 
.1 

.2 
.2 
.2 


11 




0.1 

.4 

.8 

1.2 

3.6 

1.7 
2.0 
1.7 
2.1 
2.2 


21 


1.2 
1.2 
1.2 
1.1 
1.1 

.5 
.2 
.2 
.2 
.2 


1.0 


2 




12 




22 


.7 


3 




13 


1.2 

.9 
.8 

.7 

.8 

1.0 

1.1 

1.2 


23 


.6 


4 




14 


24 


1.0 


5 




15 


25 


.6 


6 




16 


26 


.5 


7 




17... 


27 


.5 


8 




18 


28 .. 


.5 


9 




19 


29.. 


.6 


10 




20 


30... 


.6 








31 













340 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 73 at 2,700-foot level, near Hilo, Hawaii. 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.4 
.4 
.4 
.4 
.4 

.4 
.4 
.5 
.4 
.3 

.2 
.2 
.2 
.2 
.1 


0.1 
.1 
.1 
.1 
.1 

.1 
.1 
.1 
.1 

.1 
.1 
.4 
.1 
.1 

.1 
.1 
.1 
.1 
.5 

1.0 
2.5 
4.0 
2.5 
1.1 

.6 
.5 
.5 
.5 


1.0 
1.5 
1.2 
1.0 
.5 

.4 
.7 
.7 
.7 
.6 

.7 
1.8 
3.5 
3.7 
2.8 

1.9 
1.0 
3.7 
.6 
1.3 

.6 
.5 
.6 
.6 
.6 

1.2 

1.1 

.5 

.4 

.7 

3.0 


2.0 
1.8 
1.6 
3.0 
1.8 

2.2 
4.0 
3.5 
3.0 
2.9 

2.4 
2.8 
2.3 
.8 
1.0 

1.0 
1.0 
1.0 

1.1 
1.1 

1.1 
1.1 
1.1 

1.2 
1.4 

1.5 
1.3 
1.2 
1.0 
1.5 


1.5 
1.5 
1.5 
1.5 

1.8 

1.5 
1.0 
.5 
.5 

.5 

.5 
.5 
.5 
.5 
.5 

.5 
.4 
.3 
.2 
.1 


'"6.3 

.5 
.8 
.5 


0.4 

.7 

1.2 

1.0 

.8 

.7 
.6 
.4 
.3 
.3 

1.6 
1.0 
.6 
1.2 
1.0 

.9 
.8 
.6 
.5 
.4 

.4 
.4 
.5 
.9 
.3 

.5 
.4 
.3 
.4 
.3 
.2 


0.1 
.2 

1.5 
.9 

.7 

.6 
.6 
.5 

.8 
.8 

.8 
.8 
.8 
.7 
1.1 

.5 
.4 
.5 

.7 
.4 

.3 
.3 
.3 
.4 
.3 

.1 
.6 
.5 
.4 
.3 
.2 


1.5 
2.0 
3.0 
4.0 
1.2 

1.2 

1.6 

.8 
.8 
.8 

.7 
1.1 
1.0 
1.0 

.8 

1.0 

.7 
.5 
.4 
.4 

.3 
.4 
.2 
.1 
.1 

.1 

'.1 
.1 

.5 


0.5 
.5 
.5 
.5 
.3 

.3 
.2 
.1 
.2 

.2 

.1 
.6 
.5 

.7 
.7 

.6 
1.2 

.6 
1.2 
2.4 

2.5 
1.5 
3.5 
1.4 
.6 

.4 
.4 
.3 
.3 
1.9 
1.0 


2.0 
1.5 
3.0 
1.0 
1.0 

...... 

.6 
2.2 
4.0 

3.5. 
1.2 

1.8 
.7 
.6 

2.6 
3.4 
1.8 
1.3 
1.2 

1.0 
1.0 
1.2 
1.0 
.6 

.6 

.6 

1.2 

1.2 

.6 


2.0 
3.5 
2.5 
1 5 


2 


3 


4 '.. 


5 


.6 
6 


6 


7 


.6 


8 


1 


9 


g 


10 


5 


11 


4 


12 


4 


13 


.2 


14 


.3 


15 


.4 


16 


.8 


17 


.5 


18 


.6 


19 


.8 


20 


1.8 


21 


.9 


22 


2.0 


23 


3.5 


24 


2.0 


25 


.6 


26 


1.2 


27 


1.0 


28 


.6 


29 


.6 


30 


.5 


31 


.5 







Note. — Daily discha 
charge for days for wh' 



e determined from rating curve fairly well denned except for flood stages. Dis- 
gage heights are missing estimated from diagram prepared from record of daily 



rainfall at the camp near station No. 50. 

Monthly discharge at station No. 73 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 
November 13-30.. 
December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second 

feet. 



0.82 



.21 
.55 
1.26 
1.76 
.55 



Run-off 
(total in 
acre-feet). 



29.50 
48.50 



12.90 
31.60 
77.50 
105. 00 
33.80 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November. 

December 

The year 



discharge 
in second- 
feet. 



0.10 
.63 
.55 
.88 
.83 
1.43 
1.07 



,82 



Run-off 
(total in 
acre-feet). 



5.95 
38.70 
33.80 
52.40 
51.00 
85.10 
65.80 



594.00 



Discharge measurements at station No. 74 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 21 


Feet. 
1.78 
1.44 


Sec.-ft. 
5.45 
1.48 


Nov. 8 


Feet. 
2.04 
2.12 


Sec.-ft. 
10.7 


Sept. 28 


Dec. 28 


13.6 









Note.— Bed of stream in exposed bed rock. Section near gage fairly smooth. Permanent. Onechannel 
at low stage, two channels at intermediate stages, and one channel at high stages. 



ISLAND OF HAWAII. 



341 



Daily gage height, in feet, at station No. 74 at2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.] 



Day. 


Tan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












1.40 


1.82 
1.93 


















2.28 
2.18 
2.10 

1.88 

1.75 
1.92 






1.56 




1.76 






3 






1.96 
2.00 
2.29 

2.16 










4 




1.20 
1.20 

"i."i8* 

1.18 
1.16 

1.15 
1.14 
1.68 
1.58 
1.44 

1.34 








2.10 
1.90 

"i.'so* 

1.81 
1.80 
1.81 

"i.'so* 

"i.*94* 
2.00 


"*2." 40* 

2.00 
2.64 
2.20 
2.00 

1.79 
2.18 
1.97 
1.90 
1.77 

1.97 
1.89 
1.80 
1.78 


1.82 
1.77 

1.68 
1.62 
1.65 

"i.*72* 

1.70 
2.00 
1.73 
1.94 

2.05 

"2."06* 
2.34 
2.82 

"2*55* 

'*2.*62" 
2.15 

1.88 
"2."60" 






5 


1.60 

1.60 
1.60 
1.65 


2.02 


1.33 


1.98 

1.91 
1.90 

"i.'88" 


2.36 

"2. 62" 
2.02 
2.34 

"2." 44* 
2.50 
2.18 
2.01 

2.67 
3.22 
2.34 
2.64 
2.27 

2.23 
2.23 
2.43 


2.00 


6 


1.95 


7 


2.08 


8 






1.52 


2.30 


9 


1.91 
1.91 

1.96 

2.52 
2.59 
2.69 






2.14 


10 




2.21 

2.40 
2.10 
2.09 
2.08 
2.09 


1.75 




2.00 


11 ... . 


1.50 
1.50 
1.50 

1.48 
1.40 




2.58 


1.88 


12 


1.64 




1.80 


13 




1.90 
2.20 


1.71 


14 




1.60 


1.74 


15 


1.85 






1.40 




2.10 


17 


2.47 
2.66 
1.99 
2.27 

1.98 
1.86 
2.01 




1.81 


1.81 


1.98 






1.60 
1.61 
1.64 

1.62 
1.63 
1.57 
1.70 


1.78 




1.90 


19 


1.35 
1.32 

1.31 
1.30 
1.30 
1.30 
1.30 

1.30 
1.30 
1.28 
1.26 
1.25 






1.68 
1.66 


1.98 


2.10 






1.70 


2.80 


21 


1.78 


1.64 
1.66 
1.59 
1.56 

1.50 
1.45 
1.44 
1.42 


2.05 


22 


1.61 






2.85 








1.62 
1.67 
1.65 

1.61 
1.94 




24 . 


1.72 








25... 


2.20 
1.91 


1.71 

1.99 
1.82 
1.74 
1.71 
1.79 




1.89 

1.81 
1.83 
1.80 
1.75 
1.68 
1.61 


2.01 

1.98 
1.90 
2.01 
2.20 
1.94 


1.85 


26 


1.71 
1.70 
1.74 


1.60 

"i'.m 


2.08 
2.21 
2.08 


1.92 


27 




28 


2.12 


29 


2.19 


30 










31 






































Daily discharge, in second-feet, at station No. 74 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




3.64 
3.36 
3.08 
2.80 
3.08 

3.08 
3.08 
4.06 
4.52 
4.06 


11 




3.08 

9.84 

21.00 

35.20 

66.00 

20.40 
22.50 
20.40 
23.40 
26.00 


21 


23.40 
22.20 
21.00 
20.10 
19.20 

9.60 
9.20 
7.60 
4.20 
4.06 


9.60 


2 




12 




22 


3.50 


3 




13 


14.40 
12.30 
13.50 

14. 40 
16.50 
18.60 
60.00 
24.80 


23 


3.36 


4 




14 


24 


9.60 


5 




15 


25 


5.80 


6 




16 


26 


2.80 


7 




17 


27 


1.80 


8 




18... 


28 


1.80 


9 




19 


29 


5.80 


10 




20 


30 


4.20 








31 


2.80 











342 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 74 at 2,700-foot level, near Eilo, Hawaii 

for 1912. 



Day. 



l 
2 
3 
4 
5 

6 

7 
8 
9 
10 

11 

12 
13 
14, 
15. 

16, 
17 

18, 
19. 
20, 

21. 

22. 
23. 
24. 
25. 

26. 
27. 
28. 
29. 
30. 
31. 



Jan. 



2.80 
2.80 
2.80 
2.80 
2.80 

2.80 
2.80 
3.50 
3.00 
2.40 

1.80 
1.80 
1.80 
1.70 
1.10 

1.00 
.90 
.90 



.60 
.60 



.50 
.50 
.40 
.40 



Feb. 



0.40 
.40 
.30 
.30 
.30 

.30 
.30 
.30 
.30 
.20 

.20 

.20 

3.90 

2.60 

1.40 

1.00 

.80 

.70 

.40 

1.00 

20.00 
40.00 
56.00 
30.00 
15.00 

7.80 
6." 00 
5.00 
5.00 



11.00 
17.00 
14.00 
12.00 
7.20 

5.00 
8.00 
7.90 
7.80 
7.80 



25.00 
28.00 
32.00 
29.00 

26.00 
23.00 
30.00 
9.40 
17.00 

9.20 
6.90 
9.80 
7.10 
4.40 

9.40 
6.20 
4.80 
4.40 
5.60 
30.00 



Apr. 



15.00 
11.00 
8.80 
9.60 
18.00 

14.00 
30.00 
28.00 
25.00 
15.00 

21.00 
12.00 
12.00 
12.00 
12.00 

9.00 
6.00 
2.80 
2.90 
3.40 

3.10 
3.20 
2.50 
4.20 
4.30 

4.40 
4.20 
4.80 
4.50 
5.00 



May. 



5.00 
6.50 
5.00 
8.00 
10.00 

8.00 
7.00 
6.00 
5.00 
5.00 

4.00 
3.40 
4.00 
4.60 
5.30 

6.00 
5.80 
5.50 
5.10 
4.70 

3.80 
2.90 
3.70 
4.50 
3.60 

2.80 
2.30 
1.80 
1.60 
1.40 
1.20 



June. 



1.10 
1.00 



.75 
1.30 
2.00 
2.10 
2.20 

2.40 
2.60 
2.70 
2.80 
2.00 

1.10 
1.90 
2.60 
3.40 
4.20 

5.50 
6.80 
8.10 
9.40 
10.70 

12.00 
15.00 
12.00 
10.00 
8.00 



July. 



6.20 
8.20 
25.00 
18.00 
9.20 

7.80 
7.60 
7.40 
7.20 
7.00 

27.00 
15.00 
7.60 
15.00 
12.00 

9.00 
6.00 
5.00 
3.90 
3.60 

4.40 
5.20 
6.00 
6.70 
7.40 

6.00 
6.30 
5.80 
5.U0 
3.90 
2.90 



Aug. 



2.00 
2.40 
15.00 
12.00 
"7.60 

6.70 
5.80 
6.00 
5.80 
6.00 

5.90 
5.80 
7.10 
8.40 
9.60 

5.00 
6.00 
7.60 
9.20 
6.00 

5.50 
4.30 
3.10 
3.80 
3.50 

2.90 
8.40 
8.00 
7.50 
7.00 
7.00 



Sept. 



18.00 
20.00 
30.00 
35.00 
21.00 

9.60 
30.00 
15.00 
9.60 
7.60 

5.60 
14.00 
9.00 
7.60 
5.30 

9.00 
7.40 
5.80 
5.50 
4.40 

3.40 
3.60 
2.70 
2.40 
2.10 

1.80 
1.40 
1.40 
1.20 
2.00 



Oct. 



5.20 
5.70 
6.20 
5.30 

3.90 
3.10 
3.50 
4.00 
4.50 

4.20 
9.60 
4.70 
8.40 
8.00 

11.00 
15.00 
11.00 
19.00 
37.00 

32.00 
26.00 
38.00 
29.00 
14.00 

7.20 
56.00 
40.00 
30.00 
28.00 
25.00 



Nov. 



25.00 
25.00 
30.00 
25.00 
20.00 

15.00 
10.00 
10.00 
19.00 
40.00 

30.00 
22.00 
24.00 
14.00 
10.00 

31.00 
53.00 
19.00 
30.00 
14.00 

16.00 
16.00 
22.00 
16.00 
10.00 

9.20 
7.60 
10.00 
15.00 
8.40 



Dec. 



12.00 
20.00 
11.00 
10.00 



8.60 
12.00 
18.00 
13.00 



7.20 
5.80 
4.40 
4.80 
6.70 

12.00 
9.20 
7.60 
12.00 
36.00 

11.00 
38.00 
45.00 
28.00 
6.70 

8.00 
10.00 
13.00 
15.00 
10.00 
10.00 



Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. 
Discharge for days for which gage heights are missing estimated from diagram prepared from record of 
daily rainfall at the camp near station No. 50. 

Monthly discharge at station No. 74 at 2,700-foot level, near Hilo, Hawaii, for 1911-1912. 



Month. 



1911 
November 13-30 . 
December 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



17.50 
10.80 



1.52 
6.90 
13.70 
10.30 
4.63 



Run-off 
(total in 
acre-feet). 



628.00 
663.00 



93.50 
397.00 
842.00 
613. 00 
285.00 



Month. 



1912— Continued 

June 

July 

August 

September '.'.. 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



4.54 
8.62 
6.48 
9.71 
16.10 
19.90 
13.70 



Run-off 
(total in 
acre-feet). 



270.00 
530.00 
398.00 
578.00 
990.00 
1,180.00 
842.00 



7,040.00 



Discharge measurements of station No. 75 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 21 


Feet. 
0.92 

.80 


Sec.-ft. 
0.19 


Nov. 8 


Feet. 
0.99 
1.01 


Sec.-ft. 
0.38 


Sept. 28... 


Dec. 28 


.53 











Note.— Bed of stream of gravel and small cobbles; probably shifting. 



ISLAND OF HAWAII. 343 

Daily gage height, in feet, at station No. 75 at 2, 700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 . 












0.81 


0.95 
1.07 












2 






1.10 

1.05 

1.00 

.91 

.90 






0.86 




0.92 






3 






0.89 

.89 

1.06 

1 09 










4 




0.69 
.69 

"'".*7o" 

.69 
.69 

.69 
.68 
.91 

.84 

.72 








1.02 
1.01 

*"i."66' 

.94 
1.00 
1.01 

"".'98' 

"i.'oo' 

1.03 


"i.'03' 

1.03 

1.14 

1.00 

.96 

.92 
1.01 
.99 
.98 
.95 

1.00 

.97 
.94 
.92 


.94 

.91 

.90 

.85 
.86 

"".'90* 

.87 

.98 

.95 

1.00 

.99 






5 


0.90 

.90 
.90 

.92 


1.29 


.79 


1.09 

1.05 
1.00 

*".*95" 


1.04 

'".'95' 

.99 

1.22 

"i.'io" 

1.12 

1.01 

.97 

1.20 


1.00 


6 


1.00 


7 


1.00 


8 






.81 


1.08 


9 


.94 

.92 

.99 
1.06 
1.06 
1.08 






1.00 


10 1 


1.15 

1.10 

1.09 

1.05 

.98 


1.00 




1.00 


11 


.90 
.90 

.88 
.88 
.85 

.84 




1.1.2 


.96 


12 


.91 




.95 


13 




1.01 
1.07 


.94 


14 




.88 


.95 




1.00 




.86 


.76 




1.08 


17 


.96 
1.14 
1.02 
1.08 

1.01 

.98 

1.02 




.92 


1.04 


.98 






.92 

.99 

1.01 

1.05 
1.05 
1.07 
1.10 


.85 




1.02 
1.10 


1.12 
1.10 
1.08 

1.04 
1.03 
1.09 


1.00 


19 


.80 
.80 

.80 
.74 
.78 
.78 
.75 

.75 
.75 
.72 
.70 
.69 






.84 

.82 


1.00 


1.14 






.80 




21 


.90 


.88 
.91 
.90 

.89 

.84 
.82 
.81 
.82 


""•LOS" 

*"i.'i2' 

1.04 
1.00 

"i.'i9 


1.28 


22. . . 


.90 








23 






.89 
.91 
.90 

.82 
.98 




24 


.92 








25 


i.66 

.83 


.91 

1.03 
.96 
.89 
.87 
.96 




.96 

1.01 
.98 
.92 
.89 
.88 
.86 


1.01 

.99 

.98 

1.06 

1.06 

.98 


1,00 


26 


1.20 
1.24 
1.16 


.90 

"'".'87' 


.90 

1.00 

.90 


27 




28 


1.01 


29 


1.00 


30 










31 







































Daily discharge, in second-feet, at station No. 75 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




0.10 
.10 
.10 
.10 
.10 

.14 
.18 
.30 
.50 
.30 


11.... 




0.14 
.85 
2.13 
3.89 
5.32 

1.80 
2.35 
2.02 
2.35 
2.90 


21 


1.00 

1.00 

.95 

.95 

.95 

.42 
.26 
.26 
.10 
.10 


0.10 


2 




12 




22 


.10 


3 




13 




23 


.10 


4 




14 


0.60 
.55 

.50 

.60 

.75 

2.68 

1.00 


24 


.10 


5 




15 


25 


.10 


6 




16 


26 


.10 


7 




17 


27 


.10 


8 




18 


28 


.10 


9 




19 


29 


.10 


10 




20 


30 


.10 








31 


.10 











344 



WATER RESOURCES OF HAWAII, iM2. 



Daily discharge, in second-feet, at station No. 75 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 




(a) 
(a) 
\a\ 

W 

(a) 

(a) 
(a) 
(o) 

(a) 

(a) 

(a) 

0.10 

(a) 

(a) 

(a) 

i 

.20 

1.50 
2.50 
3.00 
2.00 
.50 

.10 
.10 
.10 
.10 


0.50 

1.00 

.50 

.50 

.10 

.10 
.40 
.40 
.30 
.20 

.50 
.80 
.80 
.90 
.70 

.50 
.30 
1.30 
.60 
.90 

.60 
.40 
.60 
.40 
.10 

.60 
.30 
.10 
.10 
.30 
2.00 


0.70 

.40 
.10 
.10 
.80 

1.00 

2.00 
1.80 
1.70 
1.40 

1.00 

1.00 

.80 

.40 

.30 

.30 
.20 
.20 

.50 
.60 

.80 

.80 

.90 

1.00 

1.40 

1.80 
2.20 
1.50 
1.00 
1.20 


1.20 
1.40 
1.60 
2.00 
2.80 

2.00 

1.50 

.90 

.70 

.50 

.30 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.20 
.20 
.20 

.10 
.10 
.10 
.10 
.10 
.10 


o.io' 

.10 
.50 
.10 


0.30 
.90 
2.00 
1.30 
1.00 

.80 
.50 
.40 
.30 
.40 

1.20 
.90 
.60 
.90 
.60 

.40 
.20 
.10 
.10 
.10 

.10 
.10 
.10 
.20 
.30 

.60 
.40 
.20 
.10 
.10 
.10 


0.10 
.10 

.80 
.60 
.60 

.50 
.50 
.30 
.50 
.60 

.50 
.40 
.50 
.50 
.60 

.60 
.70 
.60 
.50 
.30 

.10 
.10 
.10 
.10 
.10 

.10 
.40 
.30 
.20 
.10 
.20 


0.60 

.80 

1.00 

1.40 

.60 

.60 

1.30 

.50 

.30 

.20 
.60 
.50 
.40 
.30 

.50 
.40 
.30 
.20 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.20 


0.20 
.20 
.20 
.30 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.40 
.30 
.50 
. 50 

. 50 
.80 
.60 

1.00 
.90 

.90 

.90 

2.00 

1.20 

.70 

.50 
3.00 
2.00 
2.00 
1.70 
1.50 


1.50 

-1.00 

2.00 

1.00 

.70 

.50 

.30 

.50 

2.00 

3.00 

2.00 

1.00 

1.20 

.60 

.40 

1.80 
2.00 
1.20 
1.00 
.90 

.70 
.60 
1.00 
.80 
.60 

.50 
.40 
.80 
.80 
.40 


1.00 


2 




2.00 


3 




1.00 


4 




.70 


5 


0.10 

.10 
.10 
.20 


.50 


6 


.50 


7 


.50 


8 


.90 


9 


.50 


10 




.50 


11 


.10 
.10 
.10 
.10 


.30 


12 


.30 


13 


.30 


14.... 


.30 


15 


.50 


16 




.90 


17 




.40 


18 




.50 


19 




1.30 


20 




1.50 


21 




2.70 


22 




3.00 


23 




3.00 


24 




2.50 


25 




50 


26 




1.00 


27 




.80 


28 




.60 


29 




.50 


30 




.30 


31 






.20 











a Channel dry. 

Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 75 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 
November 14-30. 
December 

1912. 

January 

February 

March.. 

April 

May 



discharge 
in second- 
feet. 



0.74 

.87 



.35 
.54 
.93 
.56 



Run-off 
(total in 
acre-feet). 



25.10 
53.00 



4.92 
20.10 
33.20 
55.30 
34.40 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.20 
.49 
.37 



.76 
1.04 



56 



Run-off 
(total in 
acre-feet). 



11.90 
30.10 
22.80 
23.20 
46.70 
61.90 
58.40 



403.00 



Discharge measurements at station No. 76 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 21 


Feet. 
0.85 
.75 


Sec.-ft. 
0.42 
.26 


Nov. 8 


Feet. 
0.98 
1.01 


Sec.-ft. 
0.98 


Sept. 28 


Dec. 28 


1.25 









Note.— Bed of stream of small bowlders and cobbles. Section fairly smooth. Channel permanent. 
One channel at all stages. 



ISLAND OF HAWAII. 



345 



Daily gage height, in feet, at station No. 76 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.75 


0.88 
.99 












2 






1.05 

1.02 

.94 

.82 

.81 

.88 






6.86 




0.90 






3 






0.90 
1.20 
1.06 

1.38 










4 




0.55 
.55 

"".*55" 
.54 
.54 

.52 
.52 

.82 

.78 

.64 








.98 
.92 

"".ki' 
.88 
.93 
.95 

"".'92' 

"i.05' 
1.05 


"L09' 

1.11 

1.18 

.99 

.95 

.91 

1.01 

.99 

.98 
.95 

.95 
.89 
.88 

.84 


.91 

.89 

.85 
.83 
.84 

"".'85" 

.82 
.95 
.92 

.98 

.92 






5 


0.80 

.80 
.80 

.84 


1.28 


.68 


1.01 

.98 
.93 

'"".'88' 


1.08 

'"."94' 
.98 
1.40 

"i.19" 

1.28 

1.03 

.96 

1.36 


0.92 


6 


.95 


7 


.99 


8 






.70 


1.01 


9 


.85 
.85 

.85 
1.11 
1.16 
1.22 






1.00 


10 




1.49 

1.43 

1.39 

1.20 

.91 


.98 




.98 


11 


.78 
.78 
.75 
.75 




1.10 


.94 


12 


.93 




.95 


13 




.92 
1.04 


.89 


14 




.79 


.95 




.99 




.82 


.70 




1.11 


17 


1.05 

1.24 

.86 

.98 

.81 
.86 
.86 




.99 


.88 


1.04 






.90 
.91 
.99 

.98 
1.01 
1.03 
1.15 


.81 




.96 
1.08 


1.23 
1.20 
1.16 

1.09 
1.07 
1.10 




19 


.66 

.66 
.65 
.65 
.65 
.64 

.64 
.66 
.62 
.60 






.81 
.80 


.99 


1.22 






.80 






.85 


.82 
.84 
.82 
.81 

.80 
.78 
.75 
.80 


"i."i6" 
"i.'is" 

1.06 
1.02 

"i.li" 


1.32 


22 


.80 








23 






.81 
.85 
.82 

.78 
.94 




24 


.81 










.95 
.81 


.82 

1.01 
.94 

.84 
.82 
.88 




.89 

.91 
.90 
.88 
.89 
.89 
.81 


.99 

.98 

.96 

1.12 

1.12 

1.00 


.95 


26 


1.21 
1.21 
1.15 


.79 

'""."78" 


.90 

1.00 

.90 




27 








29 


1.01 










1.01 


31 







































Daily discharge, in second-feet, at station No. 76 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




0.29 
.28 
.28 
.28 
.33 

.33 
.36 

.48 
.57 

.48 


11 




0.30 
.90 
2.30 
4.18 
9.56 

3.05 
3.80 
3.05 
4.56 
6.12 


21 


3.50 
3.20 
2.90 
2.60 
2.30 

1.14 
.57 
.57 
.36 
.30 


1.20 


2 




12 




22 


.60 


3 




13 




23 


.54 


4 




14 


1.31 

1.42 

1.20 
1.42 
1.75 
12.20 
3.65 


24 


1.20 


5 




15 


25... 


90 


6 




16 


26 


.60 


7 




17 


27 


.60 


8 




18 


28 . 


60 


9 




19... 


29 


90 


10 




20 


30 . 


72 








31 


.60 











346 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No< 76 at 2,700-foot level, near Hilo, Hawaii 

for 1912. 



Day. 



1 
2 
3 
4 
5 

6 
7 
8 
9 
10 

11 

12 
13 
14 
15 

16 
17. 
18. 
19. 
20, 

21. 

22. 
23. 
24. 
25. 

26. 
27. 
28. 
29. 
30. 
31. 



Jan. 



0.30 
.30 
.30 
.30 
.30 

.30 
.30 
.40 
.40 
.30 

.30 
.30 
.25 
.25 
.20 

.20 
.20 
.20 
.20 
.20 

.20 
.15 
.15 
.15 
.15 

.15 
.20 
.10 
.10 
.10 
.10 



Feb. 



0.10 
.10 
.10 
.10 
.10 

.10 
.10 
. .10 
.05 
.05 

.05 
.05 
.35 
.30 
.20 

.20 
.15 
.15 
.50 
2.00 

5.00 
8.00 
10.00 
6.00 
.90 

.35 
.30 
.30 
.30 



Mar. 



1.00 

1.75 

1.40 

.85 

.35 

.35 
.55 
.50 
.45 
.45 

.45 
2.40 
3.20 
4.20 
3.40 

2.60 
1.75 
4.40 
.55 
1.10 

.35 
.55 
.55 
.45 
.35 

1.30 

.85 
.40 
.35 
.55 
8.00 



Apr. 



4.00 
1.00 
.60 
3.80 
1.80 

5.85 
9.00 
9.00 
8.00 
8.00 

7.90 

5.90 

3.80 

.65 

.65 

1.00 

2.00 

.60 

.65 

1.15 

1.10 
1.30 
1.55 
1.75 
2.00 

4.00 
4.00 
3.05 
1.00 
1.00 



May. 



2.50 
2.50 
3.00 
4.00 
4.80 

4.00 
3.00 
2.00 
1.50 
1.10 

1.00 
.80 
.70 
.60 
.50 

.35 
.35 
.35 
.35 
.30 

.30 
.30 
.30 
.35 
.30 

.30 
.30 
.35 
.30 
.30 
.30 



June. 



0.25 
.25 
.25 
.20 
.20 

.20 
.20 
.20 
.20 



.20 
.30 
.30 
.30 



.20 
.20 
.20 
.30 
.30 

.30 
.40 
.40 
.50 
.50 



1.20 
.60 



.50 



July. 



0.55 
1.15 
4.00 
2.50 
1.30 

1.10 
.80 
.70 
.55 
.50 

2.30 
1.50 
.75 
1.65 
1.50 

1.30 

1.15 

.80 

.35 

.30 

.40 
.50 
.50 
.90 
.60 

.65 
.60 
.55 



.35 



Aug. 



0.30 

.50 

3.00 

1.10 

.75 

.70 
.65 
.55 
.80 
.90 



.75 
1.10 
1.75 
1.75 

.60 
.55 
.80 
1.15 
.50 



.45 
.40 
.35 
.45 
.35 

.30 
.85 
.80 
.70 
.60 
.70 



Sept. 



3.00 
4.00 
7.00 
9.00 
2.20 

2.45 

3.20 

1.15 

.90 



.65 
1.30 
1.15 
1.10 

.90 

.90 
.60 
.55 
.40 
.40 

.35 
.40 
.35 
.35 

.30 

.30 
.30 
.25 
.30 
.90 



Oct. 



0.70 
.60 
.70 
.65 



.45 
.40 
.40 
.40 
.45 

.35 

.90 

.75 

1.10 

1.00 

.75 
2.50 

.95 
2.05 
2.10 

2.20 
3.20 
9.00 
3.50 
1.85 

1.40 
10.00 
8.00 
9.00 
8.00 
4.00 



Nov. 



5.00 
3.00 
8.00 
4.00 
2.10 

1.00 

.85 

1.10 

1.80 

10.00 

9.00 
3.65 
5.30 
1.55 
.95 

6.95 
8.50 
4.35 
3.80 
3.20 

2.20 
1.95 
2.30 
1.60 
1.15 

1.10 
.95 
2.60 
2.60 
1.20 



Dec. 



4.00 
7.00 
1.00 
3.00 
.75 

.90 
1.15 
1.30 
1.20 
1.10 



.90 



1.15 

2.45 
1.65 
2.20 
4.20 
5.20 

6.10 
9.00 
10.00 
2.00 



3.00 
2.00 
1.50 
1.30 
1.30 
1.30 



Note. — Daily discharge determined from rating curve fairly well denned except for flood.stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 76 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 
November 14-30. 
December 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



2.37 
1.61 



.23 
1.24 
1.46 
3.20 
1.20 



Run-off 
(total in 
acre-feet). 



79.90 
88.90 



14.10 
71.30 



190. 00 
73.80 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



0.34 
1.00 
.80 
1.52 
2.51 
3.59 
2.58 



1.64 



Run-off 
(total in 
acre-feet). 



20.20 
61.50 
49.20 
90.40 
154.00 
214.00 
159.00 



1,190.00 



Discharge measurements at station No. 77 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 21 


Feet. 
0.65 
.60 


Sec.-ft. 
0.10 
.06 


Nov. 8....'. 


Feet. 
0.68 

.68 


Sec.-ft. 
0.17 


Sept. 28 


Dec. 28 


.17 









Note.— Bed of stream of sand, gravel, and small cobbles; probably slightly shifting. One channel at 
all stages. 



ISLAND OF HAWAII. 



347 



Daily gage height, in feet, at station No.77 at 2,700-foot level, near Hilo, Hawaii, for 1912 . 
fBomin, Bilikov, Goorko Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


-Oct. 


Nov. 


Dec. 


1 












0.78 


1.02 
1.13 












2 






1.15 
1.20 
1.13 
1.02 

1.02 
1.15 






0.98 




0.70 






3 






1.22 
1.46 
1.29 

1.31 










4 




0.50 
.50 

'■"."49" 
.48 

.48 

.46 
.46 
.68 
.60 

.51 
.50 








1.10 
1.04 

""."94" 
.90 

.64 
.65 

"""62* 

""."64* 
.71 


"*i*2T 

1.22 
1.26 
1.11 

.98 

.74 
.80 
.79 
.78 
.74 

.75 

.72 
.70 
.69 


.66 

.65 

.64 
.62 
.64 

""."64" 

.62 
.70 
.66 
.70 

.69 






5 


0.71 

.71 
.71 

.74 


1.70 


.71 


1.18 

1.15 
1.10 

"i.'oo" 


0.75 

""76" 

.70 

.89 

""."80* 
.80 
.74 
.70 

.90 


0.70 


6 


.70 


7 


.69 


8 






.71 


.72 


9 


i.i.9 

1.18 

1.21 
1.30 
1.44 
1.51 






.68 


10 




1.39 

1.34 
1.35 
1.25 
1.23 


1.30 




.62 


11 


.70 
.70 
.68 
.68 

.65 




1.20 


.61 


12 


1.23 




.60 


13 




1.11 
1.19 


.60 


14 




.81 


.61 




.62 




1.01 


.74 




.68 


17 


1.14 
1.42 
1.24 
1.28 

1.22 
1.20 
1.24 




.99 


.62 


.60 






1.20 
1.28 
1.31 

1.34 
1.42 
1.44 
1.50 


1.00 




.86 
.94 


.84 
.79 
.80 

.74 
.72 
.76 


.64 


19 


.64 

.64 

.64 
.64 
.64 
.64 
.62 

.62 
.62 
.60 
.56 
.55 






.98 
.96 


.66 


.72 


20 




.81 






.66 


.62 
.64 
.62 
.62 

.62 
.62 
.61 
.62 


"""."79" 

""."78" 
.72 

.68 
"".'84* 


.84 


22 


.90 








23 






.61 

.65 
.62 

.60 
.65 




24 


.91 








25 


1.15 

.99 


1.16 

1.21 
1.16 
1.12 
1.08 
1.16 




1.01 

1.03 
1.02 
1.01 
1.05 
.96 
.98 


.70 

.70 
.69 
.73 

.72 
.70 


.80 


26 


1.55 
1.53 
1.55 


.89 
'"'."80" 


.98 

1.02 

.98 




27 




28 


.70 


29 


.68 


30 










31 







































Daily discharge, in second-feet, at station No. 77 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




1.6 
1.5 
1.4 
1.0 
1.2 

1.2 
1.3 
1.2 
1.2 
1.2 


11 




1.1 
2.2 
3.3 
4.4 
5.3 

3.4 
3.7 
3.6 
3.9 
4.3 


21 


1.5 
1.8 
2.0 
2.3 
2.4 

2.3 
2.2 
2.3 
2.1 
1.7 


2.4 


2 




12 




22 


1.6 


.3 




13 




23 


1.6 


4 




14 


0.5 

.4 

.4 

.8 

1.3 

3.1 

1.3 


24 


2.2 


5 




15 


25 


1.9 


6 




16 


26 


1.7 


7 




17 


27 


1.6 


8 




18 


28 


1.6 


9 




19 


29 


1.9 


10 




20 


30 


1.7 








31 


1.6 











348 



WATER RESOURCES OP HAWAII, 1912 



Daily discharge, in second-feet, at station No. 77 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.20 
.20 
.20 
.20 
.20 

.20 
.20 
.30 
.30 
.20 

.20 
.20 
.20 
.20 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 
.10 


0.10 

.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.20 
.10 
.10 

.10 
.10 
.10 
.20 
1.00 

2.00 
3.50 
5.00 
3.50 
2.5 

1.5 
1.0 
1.0 
1.0 


2.0 
2.5 
2.8 
2.4 
1.7 

1.7 
2.5 
2.6 

2.7 
2.6 

2.9 
3.4 
4.2 

4.7 
3.0 

2.0 
2.4 
4.1 
3.0 
3.3 

2.9 
2.8 
3.0 
2.8 
2.6 

2.9 
2.6 
2.3 
2.1 
2.6 
4.0 


3.0 
3.0 
2.9 
4.4 
3.3 

3.5 
5.0 
4.5 
4.0 
3.9 

3.6 
3.7 
3.1 
3.0 
2.9 

2.9 
2.8 
2.8 
3.3 
3.5 

3.6 
4.1 
4.2 
4.6 
4.8 

4.9 
4.8 
4.9 
3.0 
3.0 


3.5 
4.0 
4.0 
4.5 
5.8 

5.0 
5.0 
4.5 
4.0 
3.4 

3.2 
3.0 
2.5 
2.0 
2.0 

1.7 
1.6 
1.6 
1.4 
1.3 

1.2 
1.0 
1.5 
1.1 
1.0 

1.0 
.8 
.5 
.4 
.4 
.3 


0.4 
.4 
.3 
.2 
.2 

.2 
.2 
.2 
.2 
.3 

.4 
.5 
.6 
.6 

.4 

.3 
.3 
.4 
.5 
.6 

.7 
.9 
1.0 
1.2 
1.4 

1.5 
1.7 
1.5 
1.6 
1.6 


1.7 
2.4 
4.0 
3.0 
2.7 

2.5 
2.2 
1.9 
1.6 
1.8 

2.8 
2.5 
2.3 
2.7 
2.0 

1.8 
1.5 
1.5 
1.5 
1.4 

1.4 
1.5 
1.6 
1.7 
1.7 

1.8 
1.7 
1.7 
1.9 
1.4 
1.5 


1.5 
1.5 
4.0 
2.2 

1.8 

1.5 
1.2 
1.0 


3.0 
4.0 
5.0 
6.0 
2.9 

2.9 
3.2 
2.3 
1.5 
1.0 

.3 
.5 
.5 
.4 
.3 

.4 
.3 
.2 
.2 
.1 

.1 
.1 
.1 
.1 
.1 

.1 
.1 
.1 
.1 
.5 


0.4 
.2 
'.2 
.1 
.1 

.1 
.1 
.1 
.1 
.1 

.1 
.2 
.1 
.2 
.2 

.2 
1.7 

.8 
1.2 
1.0 

1.0 
.5 

3.0 
.4 
.3 

.2 
6.0 
4.0 

2.0 
.7 
.5 


0.5 

.5 

3.0 

1.0 

.4 

.2 

.2 

.2 

1.0 

5.0 

3.0 
.5 
.5 
.3 
.2 

1.0 
3.0 

.7 
.5 
.5 

.3 
.3 

• 4 
.3 

.2 

.2 
.2 
.3 
.3 
,2 


2.0 


2. 


3 5 


3.... 


.5 


4 


1.0 


5 


.2 


6 


.2 


7 


.2 


8 


.3 


9 


.2 


10 


.1 


11 


.1 


12 


.1 


13 


.1 


14 


.1 


15 


.1 


16 


.2 




.1 


18 


.1 


19 


.3 


20 


2.0 


21 


.7 


22 


3.0 


23 


5.0 


24 


3.0 


25 


.5 


26 


1.0 


27 


.3 


28 


.2 


29 


.2 


30 


.2 


31 


.2 







Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 77 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 
November 14-30. 
December . . . 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
in second 

feet. 



1.67 
2.18 



.15 

.83 

2.81 

3.70 

2.36 



Run-off 
(total in 
acre-feet). 



56.40 
134.00 



9.22 
47.70 
173.00 
220.00 
145.00 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

Year 



Mean. 

discharge 

in second 

feet. 



0.68 

lr99 

.55 
1.21 
.83 
.83 
.83 



2.11 



Run-off 
(total in 
acre-feet). 



40.50 
122.00 
33.80 
72.00 
51.00 
49.40 
51.00 



1,010.00 



ISLAND OF HAWAII. 



349 



Discharge measurements at station No. 78 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug 21 


Feet. 

0.88 

.80 


Sec. ft. 
0.06 
.05 


Nov. 8 


Feet. 

0.90 

.90 


Sec.-ft. 
0.14 


Sept. 28 


Dec. 28 


.14 









Note.— Bed of stream of sand, gravel, and small cobbles; probably slightly shifting. One channel at all 



Daily gage height, in feet, at station No. 78 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and KuznetsofE, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May 


June 


July 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.70 


0.88 
.97 












2 






1.00 

1.00 

.92 

.88 

.85 
.91 






0.82 




0.87 






3 






0.98 
1.01 

.98 

.99 










4 




0.61 
.61 

"".*60" 
.60 

.60 

.60 
.59 
.85 
.80 
.74 

.71 

.70 








.99 
.96 

""*.*9i* 
.86 
.92 
.94 

"*".*92* 
.94 

""."89* 


"6." 99* 

1.01 

1.11 

.94 

.90 

.88 
.94 
'.90 
.89 
.84 

.90 
.89 

.88 
.86 


.90 

.88 

.86 
.82 
.82 

"".'85* 

.82 
.94 
.91 
.94 

.92 






5 


0.85 

.85 
.85 
.89 


1.29 


.68 


1.00 

.98 
.92 

"*."90" 


0.95 

"\*89" 
.90 
1.17 

"i."66" 

1.08 

1.03 

.90 

1.11 


0.91 


7 "-- 


.90 
.91 


8 






.67 


1.05 


9 


.94 
.92 

.96 
1.01 
1.12 
1.19 






.92 


10 




1.00 

.98 

1.02 

1.02 

.90 

.91 


.85 




.91 


11 


.75 
.75 

.74 
.74 
.74 

.74 




1.21 


.90 


12 


.80 




.89 


13 




.95 
.99 


.85 


14 




.69 


.89 


15 


.92 


16 


.76 


.69 


'""."98* 


1.00 


17 


.99 
1.22 

.99 
1.03 

.91 
.91 
.94 




.90 


18 




.90 
.91 
.90 

.94 
-.95 
1.01 
1.12 


.88. 




.96 
1.01 


1.05 
1.01 
1.02 

.95 

.96 

1.02 


.95 


19 


.74 
.74 

.74 
.72 
.71 
.71 
.70 

.70 
.68 
.65 
.64 






.86 

.85 


.92 


1.02 


20 




.80 




21 


.88 


.84 
.86 
.84 

.82 

.81 
.80 
.80 
.80 


""i.'65* 

"i.*04" 

.98 

.88 

""i."io" 


1.18 


22 


.81 








23 






.84 
.84 
.81 

.80 
.89 




24 


.82 








25 


.93 
.80 


.91 

.96 
.91 
.86 

.84 
.90 




.91 

.92 
.92 
.90 
.92 
.88 
.84 


.91 

.91 

.91 

1.00 

1.00 

.92 


.95 


26 


1.21 
1.19 
1.18 


.80 

"".1% 


.98 
1.02 
.98 




27 




28 


.90 


29 


.90 


30 





















































350 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 78 at 2,700-foot level, near Kilo, Hawaii, 

for 1911-12. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1.. 


1911. 




0.10 
.10 
.10 
.10 
.05 

.05 
.10 
.10 
.10 
.10 


11. 

12. 
13. 
14. 
15. 

16. 
17. 
18. 
19. 
20. 


1911. 




0.05 

.38 
1.48 
2.80 
4.70 

.50 
1.75 

.50 
1.75 
2.70 


21. 
22. 
23. 
24. 
25. 

26. 
27. 
28. 
29. 
30. 
31. 


1911. 


0.74 
.82 
.90 
.98 

1.14 

.10 
.10 
.10 
.10 
.10 


0.42 


2... 










10 


3.. 










10 


4. ... 






0.50 
.42 

.30 
.42 
.66 
2.40 
.66 




.26 


5 








10 


6 








.10 


7 








.10 


8 








.10 


9 . 








26 


10. 








18 












.10 











Day. 



1912. 



Jan. 



0.10 

.10 
.10 
.10 



Feb. 



0.10 
.05 



Mar. 



0.30 
.50 
.50 
.20 
.10 

.10 
.10 
.20 
.30 
.20 

.30 

.60 

1.50 

2.10 

1.50 

1.00 
.50 

2.40 
.50 
.75 

.10 
.10 
.30 
.20 
.10 

.30 
.10 
.10 
.10 
.10 
2.50 



Apr. 



0.20 
.30 
.40 
.60 
.40 

.50 
2.00 
1.50 
1.00 

• 50 

.40 
.70 
.70 
.10 
.10 

.10 
.20 
.10 
.10 
.10 

.30 

.30 

.60 

1.50 

2.00 

2.30 
2.10 
2.00 
.50 
1.00 



May. 



1.50 
1.50 
2.00 
2.50 
3.10 

2.50 

1.00 

.50 

.20 

.10 

.10 
.05 
.05 
.05 
.05 

.05 
.10 
.10 
.10 
.10 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 



June. 



0.05 



.40 
.70 
.40 



July. 



0.10 
.40 
.70 
.60 
.50 

.40 
.20 
.10 
.10 
.10 

2.30 

1.50 

.30 

.50 

.40 



Aug. 



0.05 
.05 
.80 
.50 
.30 

.20 
.10 
.10 



Sept. 



0.50 

.60 

1.00 

2.00 

.50 

.60 
1.40 
.30 
.10 
.10 

.10 
.30 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.05 
.05 

.05 
.05 
.05 
.05 
.25 



Oct. 



0.10 
.10 
.10 
.10 
.10 

.10 
.05 
.05 
.10 
.10 

.05 
.30 
.10 
.30 
.20 

.20 
.50 
.30 
.60 
.70 



1.50 
.80 
.40 

.10 
3.00 
2.00 
1.70 
1.30 
1.00 



Nov. 



1.00 
.50 

2.00 
.50 



30 



.10 

.10 

1.90 

3.00 

2.00 
.50 

1.10 
.75 
.10 

1.40 

2.00 

.90 

.60 

.70 

.30 
.30 
.70 
.40 
.10 

.10 
.10 
.50 
.50 
.20 



Dec. 



1.50 

2.50 

1.80 

.70 

.10 

.10 
.10 
.90 
.20 
.20 

.10 
.10 
.10 
.10 
.20 

.50 
.10 
.30 
.70 
1.00 

2.00 
2.50 
3.00 
2.50 



.50 
.30 
.10 
.10 
.10 
.10 



Note. — Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 78 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 
November 14-30 . 
December 

1912 

January 

February 

March 

April 

May 



discharge 
in second 



0.61 
.62 



Run-off 
(total in 
acre-feet). 



20.80 
38.60 



3.07 
11.50 
35.00 
44.60 
32.00 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 

in second 

feet. 



0.10 
.35 
.17 
.27 
.57 
.76 
.74 



42 



Run-off 

(total in 

acre-feet). 



5.95 
21.50 
10.40 
16.10 
35.00 
45.20 
45.50 



306.00 



ISLAND OF HAWAII. 



351 



Discharge measurements at station No. 79 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 21 .'. 


Feet. 
0.78 
.65 


Sec.-ft. 
0.28 
.31 


Nov. 8 


Feet. 
0.87 
.98 


Sec.-ft. 
0.94 


Sept. 29 


Dec. 28 


1.36 









Note. — Bed of stream of sand, gravel, and small cobbles; probably slightly shifting. One channel at 



Daily gage height, in feet, at station No. 79 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.60 


0.82 

.92 












2 






1.12 

1.05 

.95 

.82 

.81 

.85 






0.71 




0.72 






3 






1.12 

.95 

1.15 

1.15 










4 




0.50 
.50 

""."si" 

.51 
.50 

.50 
.50 
.80 
.71 
.64 

.61 
.60 








1.00 
.89 

"""."88" 
.85 
.90 
.91 

"".'89' 

"".'96' 
.98 


'i.09' 

1.10 

1.11 

1.04 

.95 

.84 
.91 
.89 
.88 

.85 

.85 
.81 
.78 
.75 


.79 
.76 

.74 
.70 
.70 

""72" 

.69 
.81 

.78 
.82 

.81 






5 


0.80 

.80 
.80 
.81 


1.35 


.57 


.98 

.95 
.90 

'"."82" 


1.08 

"".'86" 

.86 

1.39 

"i.'26" 

1.30 

1.00 

.90 

1.46 


0.90 


6 


.90 


7 


.99 


8 






.59 


.92 


9 


.84 
.84 

.81 
1.20 
1.21 
1.25 






.92 


10 




1.09 

1.04 

1.29 

1.01 

.90 

.89 


.90 




.90 


11 


.80 
.80 
.78 
.78 
.70 

.65 




1.01 


.84 


12 


.86 




.83 


13 




.95 
1.10 


.79 


14 




.65 


.82 


15 . 


.92 


16 


.69 


.58 




1.01 


17 


1.18 

1.28 

.86 

1.25 

.81 
.80 
.83 




1.00 


.81 


.92 


18 




.90 
.91 
.91 

.94 
1.00 
1.02 
1.10 


.68 




1.01 
1.12 


1.29 
1.28 
1.19 

1.18 
1.06 
1.10 


.95 


19 


.60 
.60 

.60 
.59 
.58 
.58 
.56 

.56 
.56 
.54 
.51 
.50 






.92 
.91 


.92 


1.06 


20 




.72 




21 


.79 


.72 
.75 
.71 
.70 

.64 
.64 
.62 
.65 


"i.'25' 

"i^3o" 

1.10 

.98 

"i.'si" 


1.20 


22 


.77 








23 






.74 
.76 
.75 

.70 

.88 




24 


.80 








25 : 


1.00 

.83 


.85 

1.00 
.96 

.84 
.81 
.88 




.84 

.95 

.85 
.82 
.84 
.78 
.75 


.90 

.86 

.82 

1.05 

1.09 

.95 


1.00 


26 


1.25 
1.25 

1.22 


.79 
----- 


1.01 
1.10 
1.01 




27 




28 


.96 


29 


.95 


30 

















































Daily discharge, in second-feet, at station No. 79 at 

for 1911. 



,700-foot level, near Hilo, Hawaii, 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




0.30 
.30 
.30 
.25 
.30 

.30 
.35 
.40 
.40 
.40 


11 




0.30 
.55 
.80 
1.05 
1.40 

.80 
1.00 

.80 
1.00 
1.40 


21 


1.40 
1.35 
1.35 
1.35 
1.35 

1.10 
.45 
.45 
.40 
.35 


0.65 


2 




12 




22 


.45 


3 




13 




23 


.40 


4 




14 .. 


0.63 
.68 

.70 
.75 
.80 
.75 
1.40 


24 


.60 


5 




15 .. 


25 


.55 


6 




16 


26 


.45 


7 




17 .. 


27 


.45 


8 




18 .. 


28 


.45 


9 




19 


29 


.55 


10 




20 


30 


.50 








31 


.45 











352 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 79 at 2,700-foot 

for 1912. 



, near Hilo, Hawaii, 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.70 
.70 
.70 
.70 
.70 

.70 
.70 
.70 
.70 
.70 

.70 
.70 
.60 
.60 
.40 

.30 
.30 
.20 
.20 
.20 

.20 
.20 
.20 
.20 
.20 

.20 
.20 
.10 
.10 
.10 
.10 


0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.70 
.40 
.30 

.20 
.20 
.20 
.80 
1.00 

2.00 
3.00 
3.50 
2.50 
1.40 

.80 
1.00 
1.00 
2.00 


2.00 
1.90 
1.60 
1.20 
.80 

.80 
.80 
.80 
.80 
.80 

.70 
2.20 
2.20 
2.40 
.100 

1.80 
2.10 
2.50 
.90 
2.40 

.80 
.70 
.80 
.80 
.80 

1.40 

1.20 

.80 

.80 

.90 

2.00 


2.00 
2.00 
1.90 
1.20 
2.00 

2.00 
3.50 
3.00 
2.50 
1.80 

1.60 
2.60 
1.40 
1.00 
1.00 

1.00 
1.50 
1.00 
1.00 
1.00 

1.20 
1.40 
1.50 
1.80 
2.00 

2.40 
2.40 
2.30 
1.50 
2.00 


2.00 
2.00 
2.00 
2.00 
2.80 

1.50 
1.50 
1.50 
1.00 
1.00 

1.00 
.90 
.80 
.70 
.50 

.40 
.40 
.40 
.50 
.40 

.40 
.60 
1.50 
.70 
.70 

- .70 
.60 
.50 
.70 
.50 
.30 


0.20 
.20 
.20 
.20 
.20 

.20 
.20 
.20 
.20 
.20 

.20 
.30 
.30 
.30 
.30 

.20 
.20 
.20 
.35 
.50 

.70 

.90 

1.00 

1.20 

1.30 

1.40 
1.80 
1.40 
1.20 
1.00 


0.80 
1.10 
3.00 
2.00 
1.30 

1.20 

1.00 

.80 

.80 

.80 

1.40 
1.30 
1.20 
1.80 
1.60 

1.50 
1.40 
1.30 
1.10 
1.00 

1.10 
1.10 
1.20 
1.50 
.80 

1.20 
.80 
.80 
.80 
.60 
.50 


0.40 
.40 
2.00 
1.40 
1.00 

.90 

.90 

.80 

1.00 

1.00 

1.00 
1.00 
1.00 
1.00 
1.30 

1.00 

.70 

' .90 

1.10 
.90 

.70 
.60 
.50 
.60 
.50 

.40 
.90 
.80 
.70 
.60 
.70 


1.20 
1.50 
2.00 
2.50 
1.80 

1.80 
1.80 
1.60 
1.20 
1.00 

.80 

1.00 

1.00 

.90 

.80 

.80 
.70 
.60 
.50 
.50 

.50 
.50 
.40 
.40 
.40 

.30 
.30 
.20 
.30 
1.20 


1.00 
.50 
.70 
.70 
.60 

.50 
.40 
.40 
.40 
.50 

.40 
.70 
.60 
.80 
.80 

.70 
2.00 
1.40 
1.90 
2.00 

2.20 
2.40 
3.00 
2.60 
1.80 

1.30 
3.50 
3.50 
3.50 
3.40 
3.00 


3.00 
2.00 
3.00 
2.00 
1.70 

.90 

.90 

.90 

3.00 

3.50 

3.50 
2.40 
2.60 
1.40 
1.00 

3.20 
3.00 
2.60 
2.50 
2.20 

2.10 

1.60 
1.80 
1.50 
1.00 

.90 

.80 

1.60 

1.80 

1.20 


2.50 


2 


3.00 


3 


1.00 


4 


2.00 


5 


1.00 


6 


1.00 


7 


1.40 


8 


1.10 


9 


1.10 


10 


1.00 


11 


.80 


12 : 


.80 


13 


.70 


14 


.80 


15 


1.10 


16 


1.40 


17 


1.10 


18 


1.20 


19 


1.60 


20 


2.80 


21 


2.20 


22 


2.50 


23 


3.50 


24 


3.50 


25 


' 1.40 


26 


2.00 


27 


1.50 


28 


1.20 


29 


1.20 


30 


1.00 


31 


.80 







Note.— Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 79 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 
November 14r-30. 
December 

1912. 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.90 

.58 



.04 

.77 

1.31 

1.78 



Run-off 
(total in 
acre-feet). 



30.10 
35.40 



2.46 
44.30 



106.00 
60.30 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.56 
1.19 
.86 
.92 
1.52 
1.99 
1.55 



1.15 



Run-off 
(total in 
acre-feet). 



33.30 
73.20 
52.90 
54.70 
93.50 
118.00 
95.30 



815.00 



Discharge measurements at station No. 80 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 23 . . 


Feet. 
0.82 
.70 


Sec.-ft. 
0.35 
.02 


Nov. 8...1 


Feet. 
1.16 
1.29 


Sec.-ft. 
1.63 


Sept. 29 . . . 


Dec. 28 ... : 


2.12 









Note.— Bed of stream of gravel, small cobbles; some bed-rock exposed. Station probably only slightly 
shifting. One channel. 



ISLAND OF HAWAII. 



353 



Daily gage height, in feet, at station No. 80 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Biltkov, Goorko, BelayefE, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


l 












0.68 


0.95 
1.06 












2 






1.40 
1.31 
1.25 
1.05 

.82 
.95 






0.80 




0.88 






3 






1.62 
1.52 
1.38 

1.39 










4 




(a) 
(a) 

"(a)" 
(a) 
(a) 

(a) 
(a) 
0.88 
.79 








1.19 
1.10 

"i.'oi' 

.99 

1.02 

1.04 

* Too" 

"".'94' 

1.01 


"T43' 

1.44 
1.50 
1.36 
1.06 

1.02 
1.21 
1.19 
1.18 
1.14 

1.14 
1.08 
1.00 

.98 


.91 
.86 

.81 
.80 
.79 

""."82" 

.80 

.98 
.94 
.96 

.92 






5 


0.90 

.90 
.90 
.94 


1.58 


.60 


1.10 

1.05 
1.01 

"".91 


1.40 

*"i.'i9' 

1.18 
1.52 

*"i."58* 
1.61 
1.36 
1,23 

1.72 


1.25 


6 


1.18 


7 .. 


1.20 


8 






.61 


1.28 


Q 


.98 
.98 

.99 
1.45 
1.52 
1.55 






1.26 


10 .. 




1.48 

1.39 
1.11 
1.12 
1.22 
1.29 


1.10 




1.25 


11 


.85 
.85 
.84 
.84 
.70 

.52 




.14 


1.16 


12 .. 


.99 




1.11 


13 




1.02 
1.27 


1.10 


14 




.71 


1.11 


15 


1.15 


16 






.88 


.64 




1.31 


17 




1.36 
1.59 
1.01 
1.40 

.96 
.91 
.98 




1.18 


.90 


1.16 


18 






1.22 
1.31 
1.36 

1.37 
1.40 
1.45 
1.51 


.78 




1.18 
1.30 


1.59 
1.57 
1.48 

1.40 
1.40 
1.52 


1.05 


19 


.50 
.45 

.45 
.44 
.42 
.42 
.40 

.40 
.41 
.36 
.34 
.34 






.89 
.80 


1.04 


1.20 


20 .. 




.82 




21 




.88 
.89 
.84 
.83 

.71 
.70 
.09 
.70 


"i'.bi 

"1*58 

1.32 

1.16 

"i.'n" 


1.40 


22 


.80 










23 






.82 
.85 
.84 

.71 

.92 




24 


.81 








25 


1.37 
.98 


.98 

1.22 

1.17 

.99 

.97 

1.08 




.92 

.97 
.94 
.91 
.92 

.88 
.82 


1.22 

1.18 
1.11 
1.36 
1.40 
1.21 


1.14 


26 


1.58 
1.53 
1.49 


.78 
"\*70" 


1.01 
1.12 
1.01 




27 




28 


1.29 


29 


1.28 


30 










31 





































a Channel dry. 

Daily discharge, in second-feet, at station No. 80 at 2,700-foot level, near Silo, Hawaii, 

for 1911. 



Day. 


Nov. 


Dec. 


Day. 


Nov 


Dec. 


Day. 


Nov. 


Dec. 


1 




1.16 
.92 
.76 
.60 
.64 

.64 
.68 
.80 
.96 
.80 


11 




0.60 
1.28 
1.96 
2.68 
3.75 

1.88 
2.40 
1.88 
2.52 
2.80 


21 


3.05 
3.00 
3.00 
2.96 
2.96 

1.96 
1.48 
1.48 
1.72 
1.40 


1.48 


2 




12 




22 


1.00 


3 




13 




23 


1.00 


4 




14 , 


1.88 
2.00 

2.00 

2.20 
2.40 
5.00 
3.05 


24 


1.48 


5 




15 


25 


1.20 


6 c 


- 


16 


28 


3.08 


7 




37 


27 


1.00 


8 




18 


28 


1.00 


9 




19 


29 


1.20 


10 




20. 


30 . 


1.08 








31 


1.00 











14694°— wsp 336—14- 



-23 



354 

Daily discharge, in second-feet, at station No. 80 at 2,700-foot level, near Kilo, Hawaii, 

for 1912. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1 
2 
3 
4 
5 

6 

7 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 
18 
19 
20 

21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



0.60 
.60 
.60 



.60 
.60 
.75 
.60 
.50 

.45 
.45 
.40 
.40 

.05 

.05 

.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 



(a) 



(a) 



a) 

(a) 

fa) 

{a) 

0.55 
.30 
.05 

.05 
.05 
.05 
.05 

.20 

2.00 
3.50 
4.50 
3.00 
2.25 

.90 
.80 
.70 
.60 



2.60 
2.00 
2.25 
2.00 
1.20 

.35 

.80 
.80 
.90 



.95 
2.80 
3.10 
3.25 
3.00 

2.70 
2.45 
3.45 
1.04 
2.60 

.85 
.65 
.90 
.90 
.90 

1.90 
1.70 
.95 
.90 
1.30 
2.50 



3.00 
3.00 
3.60 
3.10 
2.50 

2,55 
4.00 
3.80 
3.50 
2.90 

2.55 
1.45 
1.50 
1.90 
1.15 

1.40 

1.65 
1.90 
2.25 
2.45 

2.50 
2.60 
2.80 
3.05 
3.20 

3.40 
3.15 

2.95 
2.80 
2.90 



3.00 
3.00 
2.50 
3.00 
3.40 

3.00 
2.60 
2.20 
1.80 
1.40 

1.20 

.95 
.85 
.75 
.65 

.55 
.40 
.25 
.25 
.30 

.30 
.30 
.30 
.35 



1.05 
1.55 
1.05 
1. 00 



0.80 
1.25 
3.00 
2.30 
1.40 

1.20 

1.05 
.85 
.65 



3.00 
1.50 
1.10 
2.10 
2.00 

1.80 
1.70 
1.20 
.55 
.30 

.30 
.40 
.50 
.60 
.70 

.90 
.75 
.65 
.70 
.55 
.35 



0.30 
.30 
2.00 
1.75 
1.40 

1.20 
1.05 
.95 
1.10 
1.15 

1.10 
1.00 
1.00 
.95 
1.05 

.80 
.60 
.90 
1.15 
.60 

.50 
.40 
.35 
.45 
.40 

.10 
.65 
.50 
.40 
.30 
.50 



2.50 
3.00 
3.50 
4.00 
2.70 

2.75 
3.00 
2.45 
1.25 
1.20 

1.10 
1.85 
1.75 
1.70 
1.55 

1.55 

1.30 

1.00 

.95 

.75 

.55 
.60 



.10 

.05 
.05 
.05 
.20 



.55 
.60 
.65 
.50 

.40 
.30 
.30 
.30 
.35 

.30 
.90 
.75 

.85 
.80 

.70 
2.00 
1.70 
2.20 
2.20 

2.20 
3.05 
4.30 
3.40 
2.60 

1.65 
4.50 
4.40 
4.30 
4.05 
3.00 



2.00 
2.50 
3.00 
2.80 
2.60 

2.20 
1.75 
1.70 
3.10 
4.30 

4.20 
3.40 
3.55 
2.45 
1.95 

4.10 
3.80 
3.45 
3.35 
-2.90 

2.60 
2.60 
3.10 
2.50 
1.90 

1.70 
1.45 
2.45 
2.60 
1.85 



2.00 
3.00 
2.60 
2.30 
2.00 

1.70 

1.80 
2.10 
2.05 
2.00 

1.65 
1.45 
1.40 
1.45 
1.60 

2.25 
1.65 
1.20 
1.80 
3.00 

2.60 
3.00 
4.00 
3.00 
1.55 

2.00 
2.10 
2.15 
2.10 
1.00 
1.00 



a Channel dry. 



Dis- 



Note. — Daily discharge determined from rating curve fairly well denned except for flood stages. 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 



Monthly discharge at station No. 80 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911. 
November 14-30. 
December 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
m second- 
feet. 



2.34 
1.36 



.67 
1.68 
2.65 
1.10 



Run-off 
(total in 
acre-feet). 



82.30 
83.50 



17. 20 
38.50 
103. 00 
158.00 
67.60 



Month. 



1912— Continued 

Tune 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



0.35 
1.12 
.80 
1.42 
1.75 
2.73 
2.05 



1.38 



Run-off 
(total in 
acre-feet). 



20.80 
68.90 
49.20 
84.50 
108.00 
162.00 
126.00 



1,000.00 



ISLAND OF HAWAII. 



355 



Discharge measurements at station No. 81 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 23 


Feet. 
0.70 

.68 


Sec.-ft. 
1.83 
.73 


Nov. 8 


Feet. 
0.91 
.97 


Sec.-ft. 
3.90 


Sept. 29 


Dec. 28 


3.93 









Bed of stream of sand and gravel with some small cobbles; station shifting. One channel at all stages. 

Daily gage height, in feet, at station No. 81 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Biltkov, Goorko, BelayefE, Selitonott, and Kuznetsoff , observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.60 


0.88 
.97 












2 






1.20 

1.10 

1.09 

.81 

.75 
.82 






0.65 


. . . . 


0.81 






3 






1.16 
1.19 
1.19 

1.22 










4 




0.32 
.31 

"'"."31" 
.31 
.32 

.31 
.31 
.70 
.60 
.48 

.44 
.40 








1.08 
.96 

'""."86* 
.85 
.90 
.91 

**"."89' 

""."92* 

.98 


*'i.*24' 

1.25 
1.28 
1.14 
1.00 

.96 
1.08 
1.04 
1.03 

.99 

.99 
.92 

.82 
.80 


.81 
.78 

!66 

.66 

----- 

.69 
.86 

.82 
.90 

.90 






5 


0.70 

.70 
.70 

.72 


1.10 


.58 


1.00 # 

.98 
.92 


1.35 

"""."96' 
.91 

1.88 

"i."32* 

1.42 

1.05 

.92 

1.75 


0.90 


6 


.90 


7. 


.90 


8. . 






.60 


.98 


9. ....... 


.82 
.81 

.87 
1.36 
1.14 
1.08 






.90 


10 




1.20 

1.12 
1.14 
1.30 

.98 
.89 


.88 




.86 


11 


.70 
.70 
.70 
.70 
.60 

.50 




1.11 


.81 


12 


.79 




.80 


13 




.92 
1.19 


.79 


14 




.69 


.81 


15 


.85 


16 


.88 


.61 




1.10 


17 


1.22 

1.14 

.98 

1.30 

.86 
.84 
.88 




1.02 


.81 


1.00 


18 




.88 
.89 
.89 

.88 

.92 

.94 

1.00 


.80 




1.06 
1.22 


1.38 
1.38 
1.33 

1.20 
1.17 
1.22 


1.02 


19 


.44 
.44 

.44 
.44 
.44 
.44 
.42 

.42 
.42 
.38 
.35 
.35 






.98 
.96 


1.01 


1.18 


20 




.90 




21 




.72 
.74 
.71 
.66 

.61 

.58 
.54 

.58 


"i.'42" 

""i.'52" 
1.24 

1.08 
'"i.'78~ 


1.30 


22 


.70 










23 






.70 
.74 
.71 

.65 
.89 




24 , 


.71 








25 


1.10 
.92 


.85 

1.10 
1.03 

.82 
.78 
.86 




.82 

.89 
.84 
.81 
.82 
.76 
.70 


.95 

.91 

.88 

1.11 

1.19 

1.01 


1.05 


26 


1.10 

.99 
.96 


.70 
"'."68" 


1.08 
1.10 

1.08 




27 




28 


.99 


29 


1.00 


30 










31 







































Daily discharge, in secon 



, at station No. 81 at 2,700-foot level, near Hilo, Hawaii, 
for 1912. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




2.3 
2.1 
1.9 
1.0 
1.3 

1.3 
1.3 

1.8 
2.1 
1.8 


11 




1.5 
3.6 
7.2 
11.4 
16.0 

8.2 
10.6 

8.2 
10.6 
12.2 


21 . 


13.4 
13.2 
13.2 
13.0 
13.0 

10.0 
3.4 
3.4 
3.3 
2.4 


3.4 


2 




12 




22 . 


2.8 


3 




13 




23 


2.3 


4 




14 


5.0 
12.6 

5.2 
8.2 
11.2 
32.0 
13.4 


24. . 


3.4 


5... 




15 


25 


3.2 


6 




16 


26 


2 8 


7 




17 


27 


2.7 


8 




18 


28 


2.7 


9 , 




19 


29 


2.5 


10. 




20 


30 


2.5 








31 


2.5 











356 



WATEE KESOTJKCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 81 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


1.40 


0.10 


6.00 


10.00 


5.00 


0.70 


3.20 


. 1.20 


9.00 


3.00 


20.00 


1.40 


.10 


9.00 


9.00 


5.50 


.70 


4.50 


1.10 


10.00 


2.40 


19.00 


1.40 


.10 


7.00 


8.20 


5.00 


.70 


8.00 


8.00 


16.00 


2.40 


18.00 


1.40 


.10 


6.80 


8.80 


6.00 


.60 


6.00 


6.60 


18.00 


2.40 


15.00 


1.40 


.10 


2.40 


8.80 


7.00 


.60 


5.00 


4.40 


9.80 


2.10 


12.00 


1.40 


.10 


1.80 


9.40 


6.00 


.60 


4.70 


3.70 


10.00 


1.30 


8.00 


1.40 


.10 


2.50 


18.00 


5.00 


.70 


3.70 


3.00 


11.00 


1.10 


3.40 


1.60 


.10 


2.50 


17.00 


4.00 


.70 


3.60 


2.80 


7.80 


1.10 


3.60 


1.50 


.10 


2.50 


16.00 


4.00 


.70 


3.60 


3.40 


5.00 


1.30 


25.00 


1.50 


.10 


2.40 


9.00 


3.20 


.80 


5.40 


3.60 


4.70 


1.50 


26.00 


1.40 


.10 


3.10 


7.40 


2.70 


.90 


7.20 


3.40 


4.40 


1.30 


25.00 


1.40 


.10 


12.00 


7.80 


2.20 


1.00 


5.40 


3.30 


6.60 


3.00 


11.00 


1.40 


1.40 


7.80 


11.00 


2.40 


1.20 


3.70 


3.50 


5.80 


2.50 


13.00 


1.40 


.70 


6.60 


4.70 


2.70 


1.30 


8.80 


3.70 


5.60 


3.40 


6.00 


.70 


.30 


7.50 


3.30 


3.00 


1.00 


7.70 


4.70 


4.80 


3.40 


3.70 


.30 


.20 


8.50 


3.30 


3.20 


.80 


6.50 


3.60 


4.80 


3.40 


22.00 


.30 


.10 


9.40 


3.20 


2.80 


1.00 


5.40 


2.40 


3.70 


10.00 


24.00 


.20 


.10 


7.80 


3.20 


2.30 


1.50 


5.00 


3.80 


2.50 


6.20 


13.00 


.20 


.10 


4.70 


3.30 


2.00 


2.50 


4.70 


5.20 


2.30 


9.40 


13.00 


.20 


2.00 


11.00 


3.30 




3.40 


4.40 


2.00 


2.00 


11.00 


12.00 


.20 


14.00 


3.00 


3.20 


1.70 


4.00 


4.00 


1.80 


1.60 


12.00 


9.00 


.20 


20.00 


2.70 


3.70 


1.40 


4.00 


3.60 


1.60 


1.80 


13.00 


8.40 


.20 


26.00 


3.20 


4.00 


1.40 


5.00 


3.20 


1.40 


1.50 


20.00 


9.40 


.20 


18.00 


3.00 


5.00 


1.50 


5.00 


2.80 


1.80 


1.10 


15.00 


7.00 


.10 


7.00 


2.80 


6.00 


1.50 


6.00 


2.50 


1.50 


1.00 


10.00 


4.20 


.10 


3.70 


7.00 


7.00 


1.40 


6.60 


3.30 


1.10 


.80 


6.60 


3.60 


.10 


3.00 


5.60 


4.80 


1.40 


7.00 


2.70 


3.30 


.60 


26.00 


3.20 


.10 


3.00 


2.50 


4.40 


1.30 


6.60 


2.40 


3.00 


.50 


25.00 


7.20 


.10 


3.00 


2.10 


3.00 


1.30 


5.00 


2.50 


2.50 


.60 


25.00 


8.80 


.10 




3.00 


4.00 


1.00 


4.00 


1.90 


2.00 


4.00 


22.00 


5.20 


.10 




15.00 




.80 




1.40 


3.00 




21.00 





Dec. 



1. 

2. 
3. 
4. 
5. 

6. 

7. 
8. 
9. 
10. 

11. 
12. 
13. 
14. 
15. 

16. 
17. 

18. 
19. 
20. 

21. 

22. 
23. 
24. 
25. 

26. 
27. 
28. 
29. 
30. 
31. 



12.00 

18.00 

10.00 

6.00 



3.40 
3.40 
4.70 
3.40 
3.00 

2.40 
2.30 
2.20 
2.40 
2.80 

7.00 
5.00 
5.40 
8.60 
15.00 

11.00 
18.00 
25.00 
16.00 
6.00 

9.00 
6.00 
4.80 
5.00 
4.00 
3.00 



Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 81 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 
November 14-30. 
December 

1912 

January 

February 

March 

April 

May 



discharge 
in second- 
feet. 



10.30 
4.43 



.75 

3.58 
5.52 



Run-off 

(total in 

acre-feet). 



348 
252 



46.10 
206. 00 
339. 00 
416.00 
176.00 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 



2.49 
4.41 
3.11 
5.24 
8.64 
12.00 
7.36 



5.24 



Run-off 

(total in 

acre-feet). 



148. 00 
271.00 
191.00 
312.00 
531.00 
714.00 
453. 00 



5,800.00 



Discharge measurements at station No. 82 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug 23 


Feet. 
0.60 
.53 


Sec.-ft. 



Nov. 15 


Feet. 
0.64 
.60 


Sec.-ft. 
0.08 


Sept. 29 


Dec. 28 














Note,— Bed of stream of silt, sand, and gravel; shifting. One channel, 



ISLAND OF HAWAII. 



357 



Daily gage height, in feet, at station No. 82 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.55 


0.60 
.71 












2 






0.88 

.85 
.92 
.72 

.65 

.72 






0.61 




0.60 






3 






0.71 

.94 

.85 

.89 










4 




"W 

(a) 

(3 

0.62 
.61 
.59 

fa) 
{a) 








.71 
.68 

"""."64* 
.61 
.70 
.71 

'".'69' 

'"."72" 
.75 


" "6." 96" 

.91 
.95 

.88 
.79 

.75 

.85 
.78 
.76 

.72 

.72 
.66 
.60 
.59 


.60 

.59 

.58 
.56 
.56 






5 


0.60 

.60 
.60 
.65 


1.20 


.50 


.75 

.72 
.68 

"".62 


0.85 

"".hi" 

.68 


0.72 


6 


.68 


7 .. 


.68 


8 






.51 


.70 


9 . 


.73 

.74 

.59 
.76 
.69 

.58 






.70 


10 




.73 

.71 

.76 
.84 
.71 
.71 


.78 




.59 

.55 
.68 
.65 
.69 

.70 


"".'80' 

.85 
.70 
.64 

.96 


.65 


11 


.60 
.60 
.60 
.60 

.58 




.85 


.64 


12 


.75 




.61 


13 . 




.70 

.78 


.60 


14 




.60 


.62 




.68 




.88 


.56 




.76 


17... 


.71 
.59 
.46 

.80 

.42 
.41 

.48 




.70 


.62 


.70 






.75 
.75 
.75 

.74 
.80 
.85 
.98 


.73 




" .74 
.82 


.88 
.80 
.76 

.74 

.74 
.82 


.71 


19 


.55 
.55 

.55 
.54 
*52 
.52 
.51 

.51 
.52 
.45 
.42 
.40 






.64 
.65 


.70 


.84 


20 




.60 








.58 
.59 
.55 
.54 

.52 
.51 
.51 

.54 


""".*96" 

"'.'88' 
.81 

.76 
'".'98' 


1.08 


22 


.60 










23 .. 






.60 
.62 
.61 

.58 
.68 




24 


.61 








25 


.80 
.68 


.76 

.82 
.77 
.62 
.59 
.68 




.64 

.71 
.65 
.61 
.62 
.61 
.60 


.65 

.62 
.62 
.79 

.78 
.68 


.75 


26 


1.00 
.95 

.89 


.60 
"""."58' 


.68 
.71 

.68 




27 




28 


.62 


29 


.62 












31 







































Monthly discharge at station No. 



o Channel dry. 
at 2,700-foot level, near Hilo, Hawaii, for 1911- 



Month. 



November. 
December. 



1911. 



January . . 
February. 

March 

April 

ay 



1912. 



Ap; 

Ma- 



Mean 
discharge 
in second- 
feet. 



00.10 
0.10 



.01 
.01 
.09 
.09 
.04 



Run-off 

(total in 

acre-feet). 



5.95 
6.15 



5.60 
5.40 
2.40 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 



The year . 



Mean 
discharge 
in second- 
feet. 



0.03 
.04 
.05 
.05 
.07 
.07 



.05 



Run-off 
(total in 
acre-feet). 



1.80 
2.60 
2.80 
3.20 
4.40 
4.20 



37.40 



a Estimated. 

Note. — Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 
record at camp near station No. 50. 

Discharge measurements at station No. 83 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 23 


Feet. 
0.85 
.80 


Sec. -ft. 





Feet. 
0.80 
.64 


Sec.-ft. 
0.02 


Sept. 29 


Dec. 28. 














Note. — Bed of stream of silt, sand, and gravel; shifting. One channel. 



358 



WATER RESOURCES OF HAWAII, 1912. 



Daily gage height, in feet, at station No. 83 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.70 


0.85 
.93 












2 






0.90 
.96 
.90 

.81 

.80 
.96 






0.82 




0.82 






3 






0.95 

1.08 

.99 

1.10 










4 




(«) 
(«) 

T 

(o) 

(a) 

0.90 

.80 

.71 

.66 
.00 








1.05 
.98 

"".91 
.90 
.90 
.91 

'"".*90' 

"\*92" 
.96 


"6." 88" 

.90 
.98 
.94 
.90 

.78 
.90 
.88 
.86 
.83 

.84 
.83 
.80 
.76 


.84 

.82 

.81 
.80 

.81 






5 


0.90 

.90 
.90 
.91 


1.20 


.65 


1.00 

.95 
.90 

""."si" 


0.81 

""."80" 

.80 


0.70 


6 


.60 


7 


.68 


8 






.70 


.72 


9 


.94 
.92 

.95 

.90 

.96 

1.01 






.69 


10 




1.20 

1.10 

1.06 

.99 

.90 

.90 


.89 




.80 

.78 
.80 
.79 
.80 

.81 


""."si" 

.81 
.80 
.80 

.84 


.62 


11 


.88 
.88 
.88 
.88 
.85 

.84 




1.00 


.65 


12... 


.79 




.64 


13 




.91 

.98 


.54 


14 




.76 


.61 


15 


.65 


16 


.88 


.69 




.70 


17 


-.88 

1.09 

.96 

.98 

.95 
..91 
.97 




.85 


.89 


.61 


18... 




.90 
.91 
.91 

.94 

.9,5 

.94 

1.01 


.87 




.91 
.99 


.88 
.84 
.81 

.81 
.78 
.81 


.65 


19 


.80 
.80 

.80 
.79 

.78 
.78 
.76 

.76 
.76 
.74 
.71 
.70 







.80 
.79 


.93 


.72 


20 




.74 




21 




.75 
.81 
.80 
.80 

.80 
.80 
.80 
.80 


""."89" 

"".'82" 
.81 

.80 
"".'84" 


.81 


22 


.89 










23.. 






.86 
.89 

.88 

.82 
.91 




24 


.90 








25 


.90 
.79 


.94 

.91 
.96 

.82 
.79 

.88 




.82 

..90 

.84 
.81 
.84 
.82 
.81 


.70 

.69 
.69 
.73 

.72 
.70 


.90 


26 


1.10 

1.00 

.99 


.88 
"".*80' 


.81 
.90 

.81 




27 




28 


.68 


29 


.68 


30 










31 







































o Channel dry. 
Monthly discharge at station No. 83 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month.. 



November. 
December . 



1911. 



January.. 
February. 

March 

April 

May 



1912. 



Mean 
discharge 
in second- 
feet. 



a0.03 
a. 05 



.003 

.003 

.02 

.02 

.006 



Run-off 
(total in 
acre-feet). 



1.78 
3.08 



.20 

.20 

1.00 

1.00 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 



The year . 



discharge 

in second 

feet. 



0.007 
.006 
.006 
.010 
.010 
.010 
.010 



.01 



Run-off 
(total in 
acre-feet). 



0.40 
.40 
.40 
.60 
.80 



6.60 



a Estimated. 

Note.— Mean monthly discharge estimated directly from gage heights and measurements. Discharge 
for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rain- 
fall record at camp near station No. 50. 



ISLAND OF HAWAII. 



359 



Discharge measurements at station No. 84 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 23 


Feet. 
0.22 
.23 


Sec.-ft. 



Nov. 15 


Feet. 
0.34 
.30 


Sec.-ft. 
0.08 


Sept. 29 


Dec. 29 


.06 











Note. — Bed of stream of silt, sand, and gravel; shifting. One channel. 

Daily gage height, in feet, at station No. 84 at 2,700-foot level, near Kilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.15 


0.25 
.34 












2 






0.35 
.35 
.32 

.30 

.28 
.35 






0.26 




0.25 






3 






0.50 
.60 

.58 

.61 










4 




"W 

(a) 

(a) 
(a) 
0.30 
.24 

(a) 

(a) 
(a) 








.42 
.39 

"".31 
.30 
.32 
.34 

"""."si" 

"".'34* 

.36 


'"6." 39* 

.40 
.44 
.38 
.34 

.31 
.34 
.31 
.31 
.29 

.32 
.30 
.29 

.28 


.28 

.26 

.24 
.22 

.24 






5 


0.30 

.30 
.30 
.31 


0.90 


.11 


.38 

.38 
.30 

*".*29* 


0.38 

"".31 
.32 


0.31 


6 


.30 


7 


.30 


8 






.20 


.32 


9 


.36 
.35 

.36 
.44 
.46 
.50 






.32 


10 




.70 

.65 
.61 
.51 
.32 
.40 


.60 




.25 

.22 
.30 
.28 
.31 

.32 


""."46" 
.42 
.35 

.34 

.53 


.31 


11 


.25 
.25 
.24 
.24 
.22 

.21 




.45 


.31 


12 


.58 




.30 


13 




.31 

.38 


.30 


14 




.29 


.34 


15 


.39 


16 


.39 


.20 




.46 


17 


.41 
.55 
.40 
.45 

.32 
.33 

.36 




.32 


.29 


.41 


18 




.45 
.51 
.55 

.61 
.58 
.61 
.65 


.28 




.41 

.49 


.44 
.40 
.38 

.38 
.36 
.38 


.44 


19 


.18 

.15 

.15 
.15 
.12 
.12 
.11 

.11 
.11 
.09 
(a) 

(a) 






.32 
.31 


.32 


.55 


20 .... 




.22 




21 




.25 
.26 
.25 
.25 

.24 
.22 
.22 
.23 


"*.*49" 

""."42" 
.35 

.30 
""."55" 


.68 


22 


.28 










23 






.25 
.26 

.25 

.22 
.32 




24 


.30 








25 


.31 
.26 


.36 

.35 
.32 
.30 
.28 
.34 




.30 

.32 
.31 
.29 
.31 
.29 
.28 


.34 

.31 
.31 
.38 
.38 
.34 


.41 


26 


.70 
.61 
.61 


.25 
"".'26' 


.35 
.41 
.35 




27 




28 


.30 


29 


.30 


30 










31 







































a Channel dry. 

Daily discharge, in second-feet, at station No. 84 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 


11 




0.05 
.16 
.34 
.52 
.73 

.60 
.67 
.72 
.73 
.82 


21 


, 0.37 
.36 
.34 
.33 
.32 

.28 
.05 
.05 
.05 
.05 


0.72 


2 




12 . 




22 


.60 


3 




13 




23 


.45 


4 




14 


0.30 
.22 

.22 
.27 
.33 
.45 
.37 


24 


.63 


5 




15.... 


25 


,60 


6 




16 


26 


.60 


7 




17 


27 . 


.52 


8 




18 


28 . 


.52 


9 




19 


29 


.60 


10 




20 


30 .. 


.57 








31 


.52 











360 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 84 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 






0.10 
.10 
.10 
.05 
.05 

.05 
.10 
.10 
.10 
.10 

.10 
.20 
.25 
.30 
.20 

.20 
.15 
.40 
.15 
.20 

.05 
.10 
.10 
.10 
.10 

.10 
.05 
.05 
.05 
.10 
.70 


0.50 
.40 
.30 
.45 
.40 

.45 
.70 
.65 
.65 
.60 

.50 
.45 
.30 
.05 
.15 

.20 
.20 
.20 
.30 
.40 

.45 
.40 
.45 
.50 
.50 

.60 
.45 
.45 
.30 
.30 


0.30 
.30 
.50 
.70 
.90 

.80 
.60 
.50 
.50 
.45 

.40 
.40 
.30 
.20 
.20 

.15 
.10 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


" "6." 05' 

.10 
.15 
.10 


0.05 
.10 
.30 
.20 
.15 

.15 
.05 
.05 
.05 
.10 

.20 
.10 
.05 
.15 
.10 

.10 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


0.05 
.05 
.05 
.20 
.15 

.10 
.05 
.05 
.05 
.10 

.10 
.05 
.10 
.10 
.10 

.10 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 
.05 


0.20 
.30 
.40 
.60 
.15 

.15 
.20 
.15 
.10 
.10 

.05 
.10 
.05 
.05 
.05 

..05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.20 


0.10 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.50 
.15 
.30 
.30 

.30 
.30 
.60 
.20 
.10 

.05 
.90 
.80 
.60 
.40 
.20 


0.30 
.40 
.50 
.20 
.15 

.10 
.05 
.05 
.05 
.10 

.15 
.15 
.20 
.10 
.10 

.35 
.30 
.20 
.15 
.15 

.15 
.10 
.15 
.10 
.10 

.05 
.05 
.15 
.15 
.10 


0.30 


2 






.60 


3 






.40 


4 






.10 


5 


0.05 

.05 
.05 
.05 




.05 


6 . 


.05 


7 


.05 


8 


.05 


9 


.05 


10 






.05 


11 


.05 
.05 


"6." 05" 


.05 


12 


.05 


13 


.05 


14.. 




.10 








.15 


16 






.25 


17 






.15 


18 






.25 


19 






.40 


20.. 






.50 


21 






.70 


22 






.80 


23 






.90 


24 






.60 


25 






.15 


26 






.20 


27 






.10 


28 






.05 


29.... 






.05 


30 






.05 


31 






.05 











Note. — Daily discharge determined from poorly defined rating curve. Discharge for days for which 
gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 
near station No. 50. 



Monthly 



at station No. 84 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 
November 14-30. 
December 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



0.28 



Run-off 
(total in 
acre-feet). 



9.32 
24.20 



1.23 

2.88 



24.40 
16.00 



Month. 



1912. —Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second 

feet. 



Run-off 
(total in 
acre-feet). 



0.05 
.09 
.07 
.12 
.21 
.16 
.24 



.15 



2.98 
5.53 
4.30 
7.14 

12.90 
9.52 

14.80 



111.00 



ISLAND OF HAWAII. 



361 



Discharge measurements at station No. 85 at 2,700-foot level, near Kilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 23 


Feet. 
0.75 

.72 


Sec.-ft. 
1.47 
.38 


Nov.15 : 


Feet. 
0.85 
.80 


Sec.-ft. 
2.96 


Sept. 29 


Dec. 29 


2.04 









Note. — Bed of stream of sand and small cobbles; probably slightly shifting. One channel. 

Daily gage height, in feet, at station No. 85 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff , Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.70 


0.88 

.87 












2. . 






1.00 
.95 
.96 
.80 

.78 
.85 






0.72 




0.80 






3 






1.00 
1.00 
1.02 

1.16 










4. 




0.61 
.61 

"".'65' 
.65 
.61 

.61 
.60 
.72 
.71 
.69 

.69 
.69 








.98 
.94 

'".'si' 

.80 
.88 
.89 

""."85" 

"".'88' 
.94 


"6.96' 

.98 

1.01 

.94 

.91 

.88 
.90 
.88 
.86 
.82 

.84 
.82 
.80 
.78 


.81 
.79 

.76 
.75 
.75 






5 

6 


0.75 

.75 
.75 
.80 


1.38 


.70 


.90 

.88 
.83 

""."80' 


0.96 

"".82' 

.84 


0.85 
.80 


7... 


.85 


8... 






.71 


.98 


9 


.89 
.88 

.87 

.98 

1.12 

1.18 






.90 


10 




1.18 

1.18 

1.09 

.98 

.83 

.81 


.98 




.74 

.71 

.82 
.81 
.85 

.84 


"i.'oi' 

1.08 
.91 

.84 

1.18 


.88 


11 


.71 
.71 

.70 
.70 
.70 

.70 




1.07 


.75 


12 


.88 




.80 


13 




.85 
1.02 


.79 


14 




.80 


.81 


15 


.92 


16 


.69 


.78 




.95 


17 


.82 
1.20 

.85 
.85 

.82 
.80 
.86 




.91 


.80 


.84 


18 




.90 
.91 
.91 

.94 

.98 

.99 

1.10 


.87 




.98 
1.04 


1.11 

1.02 
.96 

.95 
.91 
.96 


.90 


19 


.70 
.70 

.70 
.69 

.68 
.68 
.66 

.66 
.66 
.64 
.62 






.84 
.86 


.90 


1.01 


20 




.80 




21 




.75 

.78 
.75 

.74 

.72 
.72 
.71 
.72 


"i.'09" 

"i'.bh' 

.95 

.84 

"i.'2i* 


1.11 


22 


.75 










23 






.75 
.76 
.74 

.71 
.80 




24 


.81 








25 


.90 

.81 


.88 

.91 

.88 
.80 
.78 




.81 

.82 
.82 
.79 
.81 
.79 
.78 


.88 

.84 
.82 
.95 
.96 
.85 


.95 


26 

27 


1.25 
1.18 
1.12 


.79 

""."78' 


.80 
.90 
.80 




28 


.88 


29 


.80 












31 







































Daily discharge, in second-feet, at station No. 85 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




1.04 
1.04 
1.04 
1.04 
1.38 

1.38 
1.20 
1.74 
2.28 
1.74 


11:.. .. 




1.20 
2.46 
3.72 
5.60 
13^,60 

4.26 
6.20 
4.26 
6.20 
9.22 


21 


14.90 
14.70 
14.50 
14.30 
14.30 

10.10 
2.10 
2.10 
1.92 
1.04 


3.54 


2 




12 




22 . 


2.10 


3 




13 




23 .. 


1.74 


4 




14 


3.90 
5.40 

5.40 

5.80 
6.20 
18.90 
14.90 


24... 


3.00 


5 




15 


25... 


2.28 


6 




16 


26... . 


2.10 


7 




17 

18 . 


27 


2.10 


8 




28 


2.10 


9 




19... 


29 


2.46 


10 




20 


30 


2.10 








31 


2.10 











362 



WATER RESOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 85 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.20 
1.20 
1.20 
1.20 
1.20 

1.20 
1.20 
2.10 
1.20 
1.20 

.55 
.55 
.40 
.40 
.40 

.40 
.40 
.40 
.40 
.40 

.40 
.30 
.25 
.25 
.10 

.10 
.10 
.10 
.10 
.10 
.10 


0.05 
.05 
.05 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
.70 
.55 
.30 

.30 

.30 

.30 

1.00 

3.50 

8.00 
12.00 
14.50 
9.00 
3.90 

2.25 
4.00 
4.50 
5.00 


5.00 
5.80 
4.80 
5.00 
2.10 

1.70 
3.00 
3.50 
3.70 
3.50 

3.35 

5.00 
8.30 
9.65 
7.00 

4.00 
2.50 
10.10 
3.00 
3.00 

2.50 
2.10 
3.20 
2.50 
3.50 

4.10 
3.50 
2.10 
1.70 
3.20 
10.00 


7.00 
6.00 
5.80 
5.80 
6.20 

9.20 
14.50 
13.00 
12.00 

9.65 

9.65 
7.70 
5.00 
2.60 
2.30 

2.50 
5.00 
3.90 
4.10 
4.10 

4.60 
5.00 
5.50 
7.90 
10.00 

11.20 
9.65 
8.30 
6.00 
6.00 


7.00 
8.00 
6.00 
9.00 
14.10 

11.00 
5.00 
5.60 
5.00 
5.00 

4.00 
3.50 
3.00 
2.00 
1.00 

.30 

.50 

3.35 

2.00 

1.00 

1.00 
1.20 
3.00 
2.38 
2.00 

1.90 
1.80 
1.70 
1.80 
1.40 
1.00 


0.40 
.40 
.40 
.40 
.40 

.40 
.50 
.55 
.60 
.60" 

.60 

.60 

.60 

2.10 

1.90 

1.70 
1.80 
1.90 
2.00 
2.10 

2.10 
2.10 
2.10 
2.10 
2.10 

2.10 
3.90 
2.10 
2.50 
2.50 


3.50 
3.35 
6.00 
4.00 
3.90 

3.50 

2.60 
2.20 
2.10 
2.10 

7.20 
5.00 
3.00 
6.20 
5.00 

4.00 
4.10 
3.50 
2.80 
3.20 

2.00 
3.00 
4.00 
3.00 
2.30 

2.50 
2.50 
1.90 
2.30 
1.90 
1.70 


1.50 
.70 
7.00 
5.00 
4.60 

3.00 
2.30 
2.10 
3.50 
3.70 

3.30 
3.00 
3.30 
3.50 
4.60 

2.00 
2.10 
2.50 
3.90 
2.80 

2.00 
1.20 
1.20 
1.40 
1.00 

.60 
2.10 
4.00 
3.00 
2.50 
3.00 


5.00 
6.00 
9.00 
13.00 
5.00 

5.40 
6.00 
4.60 
4.10 
3.80 

3.50 

3.90 
3.50 
3.20 
2.50 

2.80 
2.50 
2.10 
1.70 
1.40 

1.20 
1.70 
1.20 
1.00 
.80 

.70 
.70 
.55 
.70 
. 4.00 


3.00 
2.10 
2.50 
2.30 
1.90 

1.40 
1.20 
1.20 
1.00 
1.00 

.55 
2.50 
2.30 
3.00 
2.90 

2.80 
4.00 
5.00 
6.50 
6.00 

6.50 

7.65 
9.00 
6.80 
4.80 

2.80 
14.50 
18.00 
11.00 
10.30 

8.00 


8.00 
5.00 
10.00 
6.00 
5.00 

2.00 
2.50 
2.80 
5.00 
14.00 

12.00 
6.00 
7.45 
4.10 
2.80 

9.65 
12.00 
8.10 
6.20 
5.00 

4.80 
4.10 
5.00 
4.20 
3.50 

2.80 
2.56 
4.80 
5.00 
3.00 


7.00 


2 

3 


12.00 
3.00 


4 


6.00 


5 


3.00 


6 


2.10 


7 


3.00 


8 


5.00 


9 


3.90 


10 


3.50 


11 


1.20 


12 


2.10 


13... . 


1.90 


14 


2.30 




4.25 


16 


4.80 


17 


2.80 


18 


3.90 


19 


6.00 


20 


9.00 


21 


8.10 


22 


10.00 


23 


14.50 


24 


12.00 


25 


4.80 


26 


7.00 


27 


5.00 


28 


3.50 


29 


2.10 


30 


2.00 


31 


1.00 







Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 85 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 
November 14-30. 
December 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



8.85 
3.10 



.62 
2.44 
4.27 
7.00 
3.70 



Run-off 
(total in 
acre-feet). 



299 
192 



38.10 
140 
263 
417 

228 



Month. 



1912— Continued. 

June 

July 

August 

September 

October 

November 

December 

The year 



Mean 
discharge 
in second- 
feet. 



1.45 
3.37 
2.79 
3.38 
4.76 
5.78 
5.12 



3.72 



Run-off 
(total in 
acre-feet). 



86.30 
207 
172 
201 
293 
344 
315 



2,700 



Discharge measurements at station No. 86 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 23 


Feet. 
1.54 
1.46 


Sec.-ft. 
2.29 
.68 


Nov. 15.. 
Dec. 29.. 




Feet. 
1.69 
1.68 


Sec.-ft. 
6.31 


Sept. 29 




5.90 









Note.— Bed of stream of sand and small cobbles; probably slightly shifting. One channel. 



ISLAND OF HAWAII. 



363 



Daily gage height, in feet, at station No. 86 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












1.38 


1.59 
1.69 












2 






1.82 
1.75 
1.70 

1.58 
1.75 






1.60 




1.60 






3 






1.70 
1.70 
1.80 

1.90 










4 : 




1.28 
1.28 

"i.'25" 
1.25 
1.24 

1.24 
1.22 
1.50 

1.48 

1.36 
1.32 








1.74 
1.68 

"i."59* 
1.54 
1.60 
1.65 

i.eo 

"i.'68* 
1.78 


**i.*84" 

1.75 

1.95 
1.72 
1.69 

1.66 
1.70 
1.64 
1.62 
1.61 

1.68 
1.64 
1.60 
1.58 


1.59 
1.55 

1.54 
1.51 
1.50 






5 


1.52 

1.52 
1.52 
1.52 


2.29 


1.30 


1.71 

1.68 
1.65 

"i.'6o" 


1.78 

' *£.*68* 
1.69 


1.70 


6 


1.68 


7 


1.70 


8 






1.50 


1.88 


9 


1.71 
1.71 

1.77 
1.85 






1.70 


10 




2.30 

2.78 
1.89 
1.80 
1.70 


1.80 




1.54 

1.52 

1.64 
1.59 
1.61 

1.62 


*"i.*9o" 
1.91 
1.74 
1.70 

2.08 


1.65 


11 


1.45 
1.45 
1.44 
1.44 

1.41 




1.90 


1.59 


12 


1.79 




1.53 


13 




1.C1 
1.80 


1.48 


14 




1.60 


1.48 




1.53 


16 


1.71 


1.45 




1.72 


17 


1.78 




1.68 


1.59 


1.59 


18 




1.83 
1.96 
1.95 

1.96 
2.04 
2.05 
2.15 


1.87 




1.72 
1.82 


1.89 
1.92 
1.78 

1.76 
1.76 
1.75 


1.61 


19 


1.40 
1.40 

1.40 

1.38 
1.38 
1.38 
1.36 

1.36 
1.36 
1.35 
1.34 
1.34 




1.85 
1.90 

1.84 
1.78 
1.86 




1.56 
1.52 


1.72 




20 




1.50 




21 




1.55 
1.56 
1.52 
1.51 

1.50 
1.49 
1.48 
1.46 


"i.'95" 

"1.98 

1.72 

1.68 

ioi 


1.85 


22 


1.52 










23 






1.54 
1.55 
1.54 

1.50 
1.71 




24 


1.60 








25 


1.65 
1.51 


1.66 

1.71 
1.66 
1.59 
1.56 
2.01 




1.61 

1.60 
1.62 
1.59 
1.51 
1.51 
1.50 


1.70 

1.68 
1.65 
1.78 
1.80 
1.70 


1.69 


26 


2.15 

2.08 
1.90 


1.50 
1.40 


1.58 
1.71 
1.58 




27 




28 


1.72 


29 


1.69 


30 










31 







































Daily discharge, in second-feet, at station No. 86 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




3.22 
2.50 
2.28 
1.84 
1.84 

1.84 
1.62 
3.46 
4.26 
3.46 


11 




2.28 
14.80 
31. 60 
48.00 
81.20 

32.40 
38.00 
36.00 
40.00 
45.20 


21.. 


10.80 
11.20 
11.60 
12.00 
12.00 

7.88 
5.10 
5.10 
5.25 
4.26 


6.00 


2 




12 




22 


2.50 


3 




13 




23 


2.50 


4 




14 


6.60 
14.60 

12.00 
11.60 
10.80 
30.00 
10.80 


24. 


.10 


5 




15 


25 


.10 


6 




16 


26 


.10 


7 




17 


27 


.10 


8 




18 


28 


.10 


9 




19 


29 


.10 


10 




20 


30 


.10 








31 


.10 











Daily discharge, in second-feet, at station No. 86 at 2,700-foot level, near Hilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


1.60 
1.60 
1.60 
1.60 
1.60 

1.60 
1.60 
1.60 
1.25 
1.95 

.60 
.60 
.30 
.30 
.20 


(a) 

(«) 
(a) 
(a) 
(a) 

u 

n 
$ 

1.40 
1.20 
.10 


6.00 
10.00 
8.20 
6.60 
5.00 

3.50 
8.20 
7.50 
6.80 
6.80 

7.70 
12.00 
20.00 
15.00 
10.00 


15.00 
10.00 
6.60 
6.60 
10.00 

14.00 
35.00 
35.00 
30.00 
30.00 

49.00 
14.00 
10.00 
6.60 
6.80 


20.00 
20.00 
25.00 
25.00 
30.00 

30.00 
15.00 
13.00 
11.00 
10.00 

10.00 

10.00 

9.00 

8.00 

7.00 


0.10 

' "i.'46" 

"3." 70 


3.60 
5.00 
10.00 
8.50 
6.80 

5.40 
5.10 
4.00 
3.70 
4.00 

14.00 
8.00 
3.80 

10.00 
8.00 


1.00 
1.40 
15.00 
7.20 
5.60 

4.50 
3.00 
1.80 
3.70 
5.10 

4.40 
3.70 
4.60 
5.60 
8.70 


15.00 
20.00 
30.00 
40.00 
11.00 

8.20 
15.00 
6.90 
5.70 
5.00 

4.50 
6.60 
4.30 
4.00 
3.80 


4.40 
3.70 
3.40 
3.00 
2.50 

1.80 
1.50 
1.40 
1.60 
1.80 

1.60 
4.30 
3.00 
3.80 
3.90 


20.00 
25.00 
30.00 
12.00 
7.90 

6.00 
5.60 
5.70 
8.00 
40.00 

30.00 
14.00 
14.00 
7.20 
6.60 


15.00 


2 


25.00 


3 


10.00 


4 


15.00 


5 


6.60 


6 


5 40 


7 


6.60 


8 


13.00 


9 


6 60 


10 


5.10 


11 


3.00 


12 


1.70 


13 


.80 


14 


.80 


15 


1.70 



364 



WATER RE SOURCES OF HAWAII, 1912. 



Daily discharge, in second-feet, at station No. 86 at 2,700-foot level, near Hilo, Hawaii 

for 1912— Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


16 


0.10 
.10 
.10 
.10 
.10 

.10 
.10 
.10 
.10 
.10 

.10 
.10 
.05 
.05 
.05 
.05 


0.10 
.10 
.10 
.10 

2.00 

20.00 
40.00 
50.00 
30.00 
5.10 

1.50 

2.00 
3.00 
3.00 


9.00 
7.90 
15.00 
12.00 
14.00 

11.00 
7.90 

12.00 
9.00 
5.20 

6.80 
5.20 
3.60 
2.10 
17.00 
25.00 


8.00 
9.00 
11.00 
15.00 
15.00 

15.00 
18.00 
19.00 
23.00 
23.00 

23.00 
20.00 
14.00 
12.00 
15.00 


6.80 
8.50 
12.00 
15.00 
10.00 

5.00 
1.60 
10.00 
3.70 
2.50 

1.40 
1.00 
.10 
.10 
.10 
.10 


0.60 

""i."46 

2.90 
6.80 
2.90 


6.50 
5.40 
4.00 
2.60 
1.60 

2.00 
2.00 
2.00 
4.00 
3.80 

3.70 
4.00 
2.40 
1.50 
1.50 
1.40 


3.00 
3.00 
4.80 
6.90 
2.00 

2.00 
2.00 
1.80 
2.50 
1.80 

1.40 
6.80 
6.00 
5.00 
4.00 
3.00 


5.60 
4.30 
3.70 
2.90 
2.70 

2.50 
2.60 
1.60 
1.50 
1.40 

1.40 
.90 
.80 
.70 

5.00 


4.00 
15.00 

6.90 
10.00 
10.00 

12.00 
15.00 
30.00 
16.00 
7.00 

5.40 
50,00 
40.00 
30.00 
17.00 
15.00 


20.00 
30.00 
13.00 
14.00 
8.70 

8.40 
8.40 
8.20 
7.40 
6.60 

5.40 
5.10 

8.70 
10.00 
6.60 


6.90 


17 


3.00 


18 


3.80 


19 


7.00 


20 


15.00 


21 


12.00 


22 


20.00 


23 


35.00 


24 


20.00 


25 


5.70 


26 


8.00 


27 

28 

29 


7.50 
7.00 
5.70 


30 


3.00 




3.00 







Monthly discharge at station No. 86 at 2,700-foot level, near Hilo, Hawaii, for 1911-12. 



Month. 



1911 
November 14-30. 
December 

1912 

January 

February 

March 

April 

May 



Mean 
discharge 
in second- 
feet. 



10.70 
13.10 



.63 
5.51 
9.55 
17.30 
10.40 



Run-off 
(total in 
acre-feet). 



359 



38.7 
317.0 
587.0 
1,030.0 
640.0 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December. 

The year 



discharge 
in second- 
feet. 



Run-off 
(total in 
acre-feet). 



1.00 

4.78 
4.24 
7.25 
10.50 
13.10 
9.00 



7.76 



59.5 
294.0 
261.0 
4B1.0 
646.0 
780.0 
553.0 



5,640 



a Channel dry. 

Note.— Daily discharge determined from rating curve fairly well denned except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Discharge measurements at station No. 86 A at 2,700-foot level, near Hilo, Hawaii, in 1912. 



Date. 


Hydrographer. 


Gage 
height. 


Dis- 
charge. 


Aug. 23 
Dec. 29 


E. O. Christiansen 


Feet, 


Sec-ft. 


do 


0.31 












Note.— Bed of stream of sand and silt; shifting. One channel. 

Daily gage height, in feet, at station No. 86 A at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Fataeff and Crevotapoff, observers.] 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


j 






11 




0.30 
.30 
.30 
.30 

'.30 

.30 
.30 
.30 
.31 


21 . 


0.36 
.34 
.38 


0.35 


2 






12 




22 




3 






13 




23 




4 






14... 




24 




5 




0.35 

.32 
.30 
.31 
.31 
.30 


15... 




25 


.34 

.32 
.32 
.38 
.38 
.35 


.40 


6 




16.... 




26 




7 




17... 




27... 




8 




18... 


0.40 
.41 
.38 


28... 


.32 


9 




19 


29 


.31 


10 




20 


30 










31 













ISLAND OF HAWAII. 



365 



Discharge measurements at station No. 87 at 2,700-foot level, near Hilo, Hawaii, in 1912. 
[E. O. Christiansen, hydrographer.] 



Date. 


Gage 
height. 


Dis- 
charge. 


Date. 


Gage 
height. 


Dis- 
charge. 


Aug. 23 


Feet. 
1.05 
.83 


Sec.-ft. 
1.08 
.44 


Nov. 15 


Feet. 
1.18 
1.21 


Sec.-ft. 
1.74 


Sept. 29 


Dec. 29.... 


1.96 









Note. — Bed of stream of gravel and cobbles, with some small bowlders; probably permanent. One 
channel. 

Daily gage height, in feet, at station No. 87 at 2,700-foot level, near Hilo, Hawaii, for 1912. 
[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.] 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 












0.90 


1.15 
1.13 












2 






1.60 
1.50 
1.46 
1.12 

1.10 
1.28 






0.98 




1.15 






3 






1.50 
1.55 
1.55 

1.58 










4 




0.55 
.54 

'"'.hi' 
.52 
.52 

.52 

.51 

1.10 

.98 

.82 

.76 
.71 








1.54 
1.41 

"Lis" 

1.10 
1.15 
1.16 

"Lis" 

"i.'30" 
1.41 


"i.'52 

1.44 
1.74 
1.55 
1.38 

1.32 
1.41 
1.35 
1.32 
1.21 

1.26 
1.18 
1.15 
1.12 


1.12 
1.05 

1.02 
.98 
.96 






5 


1.00 

1.00 
1.00 
1.02 


1.68 


.88 


1.28 

1.22 
1.20 

"i.'i2" 


1.36 

"i.ii" 

1.20 


1.18 


6 


1.12 


7 


1.18 


8 






.90 


1.32 


9... 


1.25 

1.25 

1.29 
1.55 
1.61 
1.68 






1.30 


10 




1.50 

1.45 
1.21 
1.18 
1.24 
1.25 


1.10 




1.01 

.98 
1.20 
1.14 
1.21 

1.24 


V i."59" 
1.60 
1.40 
1.19 

1.71 


1.15 


11 


.90 
.90 

.88 
.88 
.82 

.81 




1.71 


1.10 


12 


i.09 




1.08 


13 




1.43 
1.60 


.99 


14 




1.10 


1.11 


15 


1.24 


16 


1.00 


1.05 




1.38 


]7 


1.50 
1.76 
1.35 
1.60 

1.32 
1.30 
1.35 




1.42 


1.10 


1.22 


18 




1.19 
1.20 
1.20 

1.19 
1.33 
1.39 

1.58 


1.09 




1.51 
1.61 


1.69 
1.61 
1.45 

1.44 
1.21 
1.42 


1.12 


19 


.80 
.80 

.80 
.79 

.78 
.78 
.76 

.76 
.78 
.74 
.75 
.74 






1.30 
1.29 


1.36 


1.34 


20 




1.20 




21 




.96 
.99 
.95 
.92 

.89 
.86 

.85 
.84 


"1.72" 

"i'76' 

1.35 
1.21 

""i."78" 


1.41 


22 


1.00 










23 






.95 
.96 
.94 

.93 
1.34 




24 


1.11 








25 


1.21 
.99 


1.18 

1.41 
1.40 
1.37 
1.36 

1.87 




1.24 

1.22 
1.25 
1.11 
1.09 
1.05 
1.02 


1.20 

1.15 
1.11 
1.44 
1.48 
1.21 


1.50 


26 


1.55 
1.49 
1.38 


1.00 
"'"."98' 


1.31 
1.41 
1.31 




27 




28 


1.22 


29 


1.20 


30 

















































Daily discharge, in second-feet, at station No. 87 at 2,700-foot level, near Hilo, Hawaii, 

for 1911. 



Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


Day. 


Nov. 


Dec. 


1 




0.81 
.75 

.75 
.75 

.87 

.87 
.84 
.90 
1.10 
.90 


11 




0.84 
2.04 
4.10 
7.00 
14.70 

4.50 
5.96 
4.74 
6.48 
10.80 


21 


5.96 

5.83 
5.70 
5.58 
5.58 

2.78 
1.42 
1.42 
.90 

.87 


1.10 


2 




12 




22 


.84 


3 




13 




23 


.75 


4 




14 


3.05 
4.98 

4.30 
4.50 
4.74 
16.60 
5.96 


24 


5.46 


5 




15 


25 


5.10 


6 




16 


26 


4.50 


7 




17 


27 


4.50 


8 




18 


28 


4.50 


9 




19... 


29 


5.10 


10 




20... 


30 . 


4.74 








31 


4.50 











366 

Daily discharge, in second-feet, at station No. 87 at 2,700-foot level, near Eilo, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.90 
.90 
.90 
.90 
.90 

.90 
.90 
1.00 
.80 
.80 

.60 
.60 
.55 
.55 
.45 

.40 
.40 
.40 
.40 
.40 

.40 
.40 
.35 
.35 
.30 

.30 
.35 
.30 
.30 
.30 
.30 


0.20 
.10 
.10 
.05 
.05 

.05 
.05 
.05 
.05 
.05 

.05 
.05 
1.30 
.85 
.45 

.30 
.20 
.10 
.10 
1.00 

5.00 
7.00 
8.00 
6.00 
2.00 

1.85 
1.80 
1.70 
1.60 


3.00 
5.70 
4.50 
4.10 
1.40 

1.30 
2.45 
2.35 
2.25 
2.25 

2.55 
5.10 

5.85 
6.70 
4.00 

4.00 
4.50 
7.85 
3.05 
5.70 

2.80 
2.60 
3.05 
2.40 
1.80 

3.60 
3.50 
3.25 
3.15 
9.50 
10.00 


8.00 
6.00 
4.50 
4.50 
4.50 

5.50 
8.00 
7.00 
6.00 
4.50 

4.00 
1.95 
1.80 
2.20 
2.25 

2.10 

2.00 
1.85 
1.90 
1.90 

1.85 
2.85 
3.40 
5.50 
5.00 

4.50 
4.40 
3.30 
3.00 
3.00 


3.00 
2.00 
4.00 
5.00 
6.75 

5.00 
4.00 
3.00 
2.00 
1.30 

1.30 
1.25 
1.10 
1.00 
1.00 

.90 
1.10 
1.25 
1.10 
1.00 

.90 

.90 

1.20 

1.35 

1.10 

.90 
.90 
.85 
.80 
.80 
.70 


0.60 
.60 
.60 
.60 
.60 

.55 
.60 

.60 
.70 
.80 

.90 
1.00 
1.20 
1.30 
i.20 

1.10 
1.30 
1.50 
1.70 
1.90 

2.00 
2.20 
2.30 
2.40 
2.50 

2.70 
3.60 
2.70 
2.40 
2.00 


1.60 
1.50 
5.00 
4.00 
2.45 

2.05 
1.90 
1.60 
1.40 
1.20 

7.15 
5.40 
3.80 
5.70 
5.00 

4.30 
3.70 
3.10 
2.60 
2.55 

2.40 
2.40 
2.30 
2.30 
2.20 

2.05 
2.25 
1.35 
1.25 
1.10 
1.00 


0.80 
.85 
8.00 
5.00 
3.60 

2.60 
1.60 
1.30 
1.60 
1.65 

1.60 
1.60 
2.10 
2.60 
3.60 

2.40 
1.30 
2.20 
3.15 
2.50 

2.00 

1.50 

.75 

.80 

.70 

.70 
2.95 
2.00 
1.80 
1.50 
2.00 


3.50 
4.00 
6.00 
7.00 
4.75 

3.90 
7.55 
5.10 
3.30 
3.00 

2.80 
3.60 
3.05 
2.80 
1.95 

2.30 
1.75 
1.60 
1.40 
1.10 

.80 
.85 
.75 
.65 
.60 

.60 
.50 
.50 
.50 

.80 


1.20 
1.60 
1.50 
1.40 
1.10 

1.00 
.85 
.80 
.90 
.95 

.85 
1.90 
1.55 
1.95 
2.10 

2.20 
3.40 
4.60 
5.85 
6.00 

6.00 
7.30 
10.00 
7.00 
3.05 

1.95 
10 00 
10.00 
10.00 
8.10 
6.00 


6.00 
7.00 
8.00 
6.00 
3.15 

2.20 
1.35 
1.90 
3.00 
9.00 

8.00 
5.60 
5.70 
3.50 
1.85 

7.15 
8.00 
6.85 
7.00 
4.00 

3.90 
1.95 
3.70 
2.80 
1.90 

1.60 
1.40 
3.90 
4.30 
1.95 


4.00 


2 


7.00 


3 


5.00 


4 


3.00 


5 


1.80 


6 


1.40 


7 


1.80 


8 


2.80 


9 


2.60 


10 


1.60 


11 


1.30 


12 


1.20 


13 


.85 


14 


1.35 


15 


2.20 


16 


3.30 


17 


2.05 


18 


1.40 


19 


2u95 


20 


4.00 


21 


3.60 


22 


4.00 


23 


7.00 


24 


6.00 


25 


4.50 


26 


5.00 


27.. ,. 


3.00 


28 *... 


2.05 


29 


1.90 


30 


1.00 


31 


1.00 







Note. — Daily discharge determined from rating curve fairly well defined except for flood stages. Dis- 
charge for days for which gage heights are missing estimated from diagram prepared from record of daily 
rainfall at the camp near station No. 50. 

Monthly discharge at station No. 87 at 2,700-foot level, near Kilo, Hawaii, for 1911-12. 



Month. 



1911. 
November 14-30. . 
December. 

1912. 

January 

February 

March 

April 

May — 



discharge 
in second- 
feet. 



4.72 
3.56 



.56 
1.38 
4.01 
3.91 
1.85 



Run-off 
(total in 
acre-feet). 



159 
220 



34.40 
79.40 

247 

233 

114 



Month. 



1912— Continued 

June 

July 

August 

September 

October 

November 

December 

The year 



discharge 
in second- 
feet. 



1.47 
2.79 
2.15 
2.57 
3.91 
4.42 
2.97 



2.66 



Run-off 
(total in 
acre-feet). 



87.5 
172 
132 
153 
240 
263 
180 



1,940.0 



ISLAND OF HAWAII. 



367 



Monthly discharge at stations Nos. 1-18 and 25-87 at 2,700-foot level, near Hilo, 

Hawaii, for 1912. 

[Drainage area, about 75 square miles.] 



Month 



Discharge in 
second-feet. 



Mean. 



Per 

square 
mile. 



Run-off. 



Depth in 

inches 
on drain- 



Total in 
acre-feet. 



January 

February 

March 

April 

May 

June 

July 

August 

September 

October 

November 

December 

The year 



30.25 
248.95 
258. 81 
435. 17 
182. 20 

61.72 
146. 54 

97.19 
254.05 
401. 44 
474.07 
385. 17 



0.403 
3.320 
3.450 
5.800 
2.430 
.823 
1.950 
1.300 
3.390 
5.350 
6.320 
5.140 



0.46 
3.58 
3.98 
6.47 
2.80 
.92 
2.25 
1.50 
3.78 
6.17 
7.05 
5.93 



1,790 
14,300 
15,900 
25,900 
11,200 
3,640 
9,020 
6,970 
15,100 
24,100 
28,300 
23,700 



247. 15 



3.300 



44.89 



179,000 



Note.— The above table gives the combined discharge in second-feet and run-off in acre-feet for 
the 81 stations at the 2,700-foot level above Hilo, Hawaii. 



HAMAKUA GROUP OF STREAMS. 
KAWAINUI RIVER, NEAR WAIPIO, HAWAII. 

Location. — One hundred feet above intake of New Hamakua ditch and 6£ miles 

southwest of Kukuihaele. 
Records available.— July 20, 1911, to December 31, 1912. 

Gage. — Vertical staff; read twice daily, at 6 a. m. and 5 p. m.; datum unchanged. 
Channel. — Practically permanent. 
Discharge measurements. — Made by wading at low water and from footbridge 10 

feet below gage during high water. 
Accuracy. — No discharge rating has yet been obtained. 
Cooperation. — Station maintained in cooperation with Hawaiian Irrigation Co. 

Daily gage height, in feet, of Kawainui River near Waipio, Hawaii, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


j 


1.30 
1.25 
1.20 
1.20 
1.20 

1.20 
1.68 
2.30 
1.70 
1.35 

1.20 
1.20 
1.20 
1.10 
1.00 

1.00 

i.eo 

1.00 
1.00 
1.00 


0.80 
.80 
1.40 
1.95 
1.00 

.85 
.80 
.80 
.80 
.80 

.82 
.80 
1.45 
.90 
.80 

.80 

.80 

.80 

2.05 

2.95 


2.30 
2.60 
2.40 
2.20 
2.15 

2.05 
2.20 
1.95 
2.00 
2.25 

2.55 
2.45 
2.15 
1.90 
1.85 

1.70 
2.15 
2.30 
2.15 
2.20 


2.60 
2.30 
3.30 
2.90 
2.40 

2.35 

2.80 
2.90 
2.50 
2.50 

2.10 
2.20 
2.15 
2.10 
2.25 

2.05 
2.15 
1.95 
1.90 
2.22 


2.10 

2.20 
2.20 
2.35 
2.20 

2.20 
1.90 
1.85 
1.80 
1.80 

1.70 
1.70 
1.70 
1.70 
1.60 

1.80 
1.90 
1.90 
1.85 
1.80 


1.45 
1.40 
1.30 
1.15 
1.00 

1.00 
1.25 
1.55 
2.25 
2.35 

2.15 
2.20 
2.10 
2.05 
1.95 

2.35 

2.20 
1.95 
2.15 
2.10 


2.00 
1.90 
1.85 
2.05 
2.00 

2.05 
2.45 
2.05 
2.00 
1.95 

2.00 
1.95 
2.20 
2.15 
1.95 

1.95 
2.00 
2.00 
1.90 
1.90 


1.60 
1.65 
1.65 
1.40 
1.25 

1.20 
2.05 
1.75 
2.15 
2.25 

1.95 
2.50 
2.15 
2.30 
2.45 

2.15 
1.80 
2.20 
1.95 
1.60 


0.90 
2.10 
2.55 
2.70 
2.05 

2.05 
2.00 
2.05 
1.80 
1.30 

1.05 
.90 
.92 
.90 

1.90 

.95 
.85 
.80 
.80 
.80 


2.30 
2.20 
1.95 
1.15 
.95 

.80 
.80 
.80 
.80 
.80 

.80 
.80 
.80 
.80 
.80 

.80 
.80 
.80 
.80 
.80 


2.00 

1.40 

1.05 

.95 

.80 

.80 

.80 

.80 

2.40 

3.60 

2,10 
2.40 
2.40 
1.95 
1.80 

3.20 
3.15 
2.90 
2.55 
2.00 


3.65 


2 


2.05 


3 


1.90 


4 


1.70 


5 


1.50 


6 


1.40 


7 


1.35 


8 


1.95 


9 


2.00 


10 


2.05 


11 


1.60 


12 


1.30 


13 


1.20 


14 


1.00 


15 


1.00 


16 


1.00 


17 


.90 


18 


.95 


19 


1.20 


20 


1.45 



368 WATER RESOURCES OF HAWAII, 1912. 

Daily gage height, in feet, of Kawainui River near Waipio, Hawaii, for 1912 — Continued. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


21 


1.00 
.95 
.95 
.95 
.95 

.90 

.90 

.90 

.80 

.80. 

.80 


4.05 
2.30 
1.70 
1.80 
1.85 

1.70 
1.40 
2.80 
2.35 


2.15 
1.95 
2.25 
2.00 
2.25 

2.35 
2.10 
1.85 
1.80 
3.85 
3.70 


2.00 
2.05 
1.95 
2.45 
2.15 

2.30 
2.35 
2.00 
1.95 
1.90 


1.80 
1.70 
1.65 
1.90 
1.65 

2.00 
2.15 
2.00 
2.10 
1.85 
1.75 


2.00 
1.90 
2.20 
2.15 
1.95 

2.15 
2.00 
1.85 
2.00 
2.05 


1.90 
1.95 
2.05 
2.25 
2.00 

1.95 
1.90 
1.80 
1.75 
1.70 
1.70 


1.40 

1.15 

1.00 

.90 

.90 

1.45 

1.95 

1.20 

.95 

.90 

.90 


0.80 

.80 
.80 
.80 
.80 

.80 
.80 
.80 
.80 
1.70 


0.80 

.95 

2.30 

2.35 

.95 

1.70 
2.50 
2.25 
2.05 
1.95 
2.25 


1.90 
1.95 
2.20 
1.90 
1.70 

1.70 
1.80 
1.70 
2.05 
2.20 


1.85 


22. 


1 70 


23 


2 10 


24 


2 00 


25 


1.90 


26. 


2 05 


27 


1.60 


28 


1.65 


29 


1.80 


30 


1.45 


31 


1.35 







WAIPIO RIVER BELOW KOIAWE STREAM, NEAR WAIPIO, HAWAII. 

Location. — About 50 feet below junction of Koiawe and Waipio Rivers, and about 

5 miles southwest of Kukuihaele. 
Records available. — July 20, 1911, to December 31, 1912. 
Gage. — Vertical staff; datum unchanged. 
Channel. — Probably slightly shifting. 
Discharge measurements. — Made by wading at low water and from footbridge at 

gage during high water. 
Accuracy. — No discharge rating has yet been obtained. 
Cooperation. — Station maintained in cooperation with the Hawaiian Irrigation Co. 

Daily gage height, in feet, of Waipio River below Koiawe Stream, near Waipio, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.95 
.90 
.90 
.90 
.90 

.90 
1.40 
2.60 
1.05 

.95 

.90 
.90 
.90 
.90 
.85 

.85 
.85 
.85 
.85 
.85 

.85 
.85 
.85 
.90 

.85 

.85 
.85 
.85 
.85 
.85 
.85 


0.85 

.85 
.90 
.90 

.85 

.85 
.85 
.85 
.85 

.85 

.85 

.85 

2.50 

1.00 

.95 

.90 

.90 

.90 

2.10 

4.10 

5.50 

1.70 

.95 

.90 

.90 

.90 
2.80 
3.60 
2.40 


1.70 
3.00 
2.60 
1.70 
1.40 

1.50 
1.80 
1.10 
.90 
1.70 

2.50 
3.50 
2.80 
1.50 
1.10 

.95 
2.40 
2.90 
1.15 
2.50 

1.80 
1.10 
2.40 
1.40 
2.30 

2.90 
1.05 
1.00 
.95 
4.50 
4.00 


2.25 

2.30 
4.20 
5.10 
2.30 

2.80 
4.10 
4.20 
3.40 
3.90 

2.40 
2.40 
2.50 
1.90 
2.50 

1.30 
2.30 
1.25 
1.05 
2.40 

1.90 
1.35 
1.25 
2.70 
1.40 

3.60 
2.40 
1.35 
1.25 
1.20 


1.10 
2.30 
1.60 
3.20 
1.90 

2.00 
1.20 
2.40 
1.50 
1.20 

1.00 
.95 
.95 
.90 
.90 

.90 
1.00 

.95 
1.25 
1.35 

2.10 
1.00 
.95 
1.60 
1.25 

1.40 
1.60 
1.80 
1.35 
1.25 
1.00 


0.95 
.95 
.90 
.90 
.90 

.88 

.88 

1.05 

2.20 

4 30 

3.50 
2.50 
1.90 
1.50 
1.30 

3.00 
2.20 
1.40 
1.30 
1.15 

1.20 
1.05 
.95 
1.90 
1.05 

2.60 
1.60 
1.20 
1.00 
1.30 


0.90 

.90 

.88 

1.60 

2.20 

2.60 

3.80 

1.40 

1.80 

.90 

2.10 

1.05 
4.50 
1.50 
1.05 

1.60 
1.40 
1.05 
.95 
.90 

.90 

.90 

.90 

2.80 

1.10 

1.00 
.90 
.90 

.-90 
.90 
.90 


0.90 
.90 
.90 
.90 
.90 

.90 

.90 

1.45 

2.70 

5.00 

1.30 
1.00 
1.05 
.95 
1.50 

.92 

.92 

3.70 

1.20 

.95 

.92 
.90 

.85 
.82 
.82 

3.80 

3.00 

.95 

.42 
.90 
.85 


0.85 
1.50 
3.00 
4.10 
.95 

.90 
.95 
.85 
.90 
.85 

.85 
.90 
.90 
.92 
.90 

1.20 
.92 
.90 

.85 
.90 

.90 
.85 
.85 
.85 

.82 

.85 
.82 
.82 
.82 
1.50 


1.10 

1.40 

1.20 

.95 

.90 

.90 

.85 
.82 
.82 

.82 

.82 
.82 
.85 
.82 
.82 

.82 
.82 
.82 
.85 
.82 

.82 

.82 

2.20 

2.70 

1.20 

1.60 
2.70 
1.30 
1.40 
1.20 
3.50 


1.10 

1.00 

.95 

.92 

.90 

.90 

.90 

.90 

5.50 

4.50 

1.60 
6.00 
2.50 
1.30 
.90 

4.30 
3.50 
4.50 
2.00 
3.00 

1.50 
1.00 
1.00 
1.00 
.95 

.95 
.92 
.90 
.90 
1.10 


3.60 


2 


1.40 


3 


1.00 


4. 


.95 


5 


.92 


6 ". 


.90 


7 


.90 


8. . 


1.20 


9. . 


1.15 


10 


1.05 


11 


1.00 


12 


.95 


13... 


.90 


14 


.90 


15 


.90 


16 


.90 


17... 


.90 


18 


.90 


19 


.90 


20 


.90 


21 


.90 


22 


.90 


23 


1.10 


24 


1.05 


25 


1.10 


26 


1.25 


27 


1.05 


28 


1.00 


29 


.95 


30 


.92 


31 


.92 







ISLAND OF HAWAII. 



369 



WAIPIO RIVER BELOW WAIMA STREAM, NEAR WAIPIO, HAWAII. 

Location. — About 400 feet below junction of Waima Stream and Waipio River, and 

about 4 miles southwest of Kukuihaele. 
Records available. — July 20, 1911, to December 31, 1912. 
Gage. — Vertical staff; read once daily, at 7 a. m.; datum unchanged. 
Channel. — Probably slightly shifting. 
Discharge measurements. — Made by wading at low water and from footbridge 100 

feet above gage at high water. 
Accuracy. — No discharge rating has yet been obtained. 
Cooperation. — Station maintained in cooperation with the Hawaiian Irrigation Co. 

Daily gage height, in feet, of Waipio River below Waima Stream, near Waipio, Hawaii, 

for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


0.50 
.50 
.50 
.50 
.50 

.50 
.75 
1.25 
.60 
.50 

.50 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.50 
.50 
.50 


0.50 
.50 
.50 
.50 
.50 

.50 
.50 
.50 
.45 
.45 

.45 
.45 
1.30 
.55 
.45 

.45 

.45 

.45 

1.10 

3.25 

4.45 
.90 
.50 
.50 
.50 

.50 
1.55 
2.55 
1.60 


0.85 

1.60 

1.30 

.80 

.70 

.75 
1.00 

.70 
.50 
.85 

1.30 

1.90 

1.25 

."80 

.55 

.50 
1.25 
1.50 

.60 
1.30 

.95 
.55 

1.10 
.75 

1.15 

1.55 

.60 

.50 

.50 

3.70 

3.25 


1.15 
1.10 
3.30 
4.30 
1.20 

1.55 
3.15 
3.30 
1.85 
2.50 

1.25 
1.00 
1.20 
.70 
1.20 

.65 
.90 
.65 
.60 
1.25 

.95 
.70 
.70 
1.45 
.70 

2.30 

1.30 

.80 

.60 

.60 


0.55 
1.20 
1.00 
1.70 
.90 

1.00 

.60 

1.25 

1.00 

.62 

.52 

.50 
.52 
.50 
.50 

.50 
.55 
.50 
.60 
.70 

1.15 
.52 
.50 

.85 
.60 

.75 
.92 
.95 
.70 
.60 
.50 


0.50 
.50 
.50 
.50 
.50 

.50 

.50 

.62 

1.10 

3.40 

2.20 

1.30 

.80 

.75 

.60 

1.60 

1.20 

.60 

.95 

.60 

.65 
.50 
.50 
.90 
.50 

1.35 

.65 
.50 
.50 
.60 


0.50 
.50 
.50 
.78 

1.25 

1.35 

2.40 

.72 

.85 

.50 

1.25 
.85 

3.55 
.85 
.52 

.85 
.75 
.55 
.50 
.50 

.50 
.50 
.50 
1.30 
.50 

.50 
.50 
.50 
.50 

.48 
.48 


0.48 
.50 
.50 
.50 
.50 

.50 

.50 

.50 

1.35 

1.05 

.52 
.80 
.62 
.55 
.80 

.50 
.50 
2.00 
.70 
.52 

.50 
.50 

.48 
.48 
.48 

2.00 

1.75 

.55 

.50 

.50 


0.48 

.70 

1.60 

2.90 

.60 

.50 

1.00 

.50 

.50 

.48 

.48 
.48 
.48 
.48 
.48 

.60 
.50 
.50 

.48 
.48 

.48 
.48 
.48 
.48 
.48 

.48 
.48 
.48 
.48 
.80 


0.55 
.80 
.65 
.50 
.50 

.48 
.48 
.48 
.48 
.48 

.48 
.48 
.48 
.50 
.50 

.50 
.50 
.48 
.60 
.50 

.48 

.48 

1.10 

1.45 

.50 

.85 
1.45 
.65 
.75 
.52 
1.80 


0.65 
.50 
.50 
.50 
.50 

.48 

.48 

.48 

4.10 

3.00 

1.20 

4.70 

1.40 

.60 

.50 

2.80 
2.00 
2.90 
1.35 
.80 

.75 
.62 
.70 
.52 
.50 

.50 
.50 
.48 
.58 
.70 


1.90 


2... 


1.20 


3 


.55 


4. 


.50 


5 


.50 


6.. . 


.50 


7 


.50 


8 


.70 


9 


.55 


10 


.70 


11 


.50 


12 


.50 


13 


.48 


14 


.48 


15 


.48 


16 


.48 


17 


.48 


18 


.48 


19 


.48 


20 


.48 


21 


.48 


22 


.50 


23 


1.10 


24 


.60 


25 


.55 


26 


.62 


27 


.50 


28 


.48 


29 


.50 


30 


.48 


31 


.48 











NEW HAMAKUA DITCH AT WAIMA STREAM, NEAR WAIPIO, HAWAII. 

Location. — In the Waima Branch of Waipio Gulch, and about 8 miles west of Kukui- 
haele, Hawaii. Gage set in flume crossing Waima Stream. 
Records available. — May 1 to December 31, 1912. 
Gage. — Vertical staff; read twice daily, at 6 a. m. and 5 p. m. 
Channel. — Smooth and regular (in ditch flume). 

The following discharge measurement was made by C. H. Pierce: 
February 6, 1912: Gage height, 35.5 inches; discharge, 56.2 second-feet. 
14694°— wsp 336—14 24 



370 

Daily gage height, in feet, of New Hamahua ditch at Waima Stream, near Waipio, Hawaii, 

for 1912. 



Day. 



May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


4.30 


4.11 


4.19 


3.78 


3.70 


4.52 


4.14 


4.30 


4.02 


4.16 


3.94 


4.28 


4.55 


3.81 


4.30 


3.96 


4.10 


4.20 


5.30 


4.30 


3.71 


4.30 


3.91 


4.16 


3.90 


5.20 


3.94 


3.69 


4.30 


3.86 


4.30 


3.80 


4.81 


3.75 


3.80 


4.30 


3.85 


4.30 


3.78 


4.38 


3.65 


3.75 


4.30 


3.95 


4.41 


4.16 


4.68 


3.61 


3.65 


4.30 


4.30 


4.58 


4.10 


4.30 


3.60 


3.86 


4.30 


4.30 


4.70 


4.75 


4.34 


3.59 


4.15 


4.30 


4.20 


4.39 


4.85 


4.00 


3.58 


4.20 


4.28 


4.20 


4.45 


4.28 


3.88 


3.58 


4.20 


4.25 


4.20 


4.65 


4.71 


3.82 


3.59 


4.20 


4.30 


4.20 


4.55 


5.00 


3.80 


3.66 


4.20 


4.25 


4.20 


4.70 


4.72 


3.95 


4.76 


4.20 


4.19 


4.20 


4.40 


5.06 


3.94 


3.89 


4.10 


4.21 


4.20 


4.45 


4.32 


4.59 


3.69 


4.20 


4.28 


4.20 


4.50 


4.20 


4.15 


3.69 


4.20 


4.26 


4.20 


4.48 


4.60 


3.85 


3.75 


4.20 


4.30 


4.20 


4.15 


4.65 


3.79 


4.61 


4.20 


4.30 


4.20 


4.02 


4.05 


4.06 


3.72 


4.20 


4.30 


4.20 


3.98 


3.92 


4.48 


3.62 


4.20 


4.24 


4.16 


4.28 


2.82 


3.94 


3.75 


4.20 


4.12 


4.10 


4.30 


3.78 


3.78 


5.20 


4.20 


4.24 


4.20 


4.50 


3.72 


3.71 


5.30 


4.16 


4.28 


4.21 


4.16 


3.70 


3.66 


4.10 


4.12 


4.22 


4.20 


4.10 


4.40 


3.65 


4.60 


4.06 


4.30 


4.30 


4.05 


4.48 


3.68 


5.30 


4.14 


4.30 


4.21 


3.94 


4.58 


3.62 


4.20 


4.01 


4.26 


4.15 


3.91 


3.96 


3.60 


4.20 


4.18 


4.30 


4.26 


3.82 


3.80 


4.25 


4.20 


4.10 


4.22 




3.79 






4.20 


3.95 







Dec. 



1 
2 
3 
4 
5 

6 
7 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 
18 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



4.20 
3.65 
4.09 
4.00 
3.92 

3.85 
4.18 
4.20 
4.15 
4.18 



3.79 
3.75 

3.72 



3.66 
3.72 
3.69 
4.08 

3.78 
4.00 
4.20 
4.20 
4.04 

4.20 
3.98 
3.88 
4.10 
3.99 
3.95 



NEW HAMAKTJA DITCH AT MAIN WEIR, NEAR KTJKTTIHAELE, HAWAII. 

Location. — Near head of ditch about 500 feet south of office of Hawaiian Irrigation 

Co. (Ltd.), at Kukuihaele. This ditch diverts all run-off from the headwaters of 

the Wapio Basin below the upper Hamakua ditch. 
Records available.— July 18, 1910, to December 31, 1912. , 

Gage. — Automatic clock register; datum unchanged. 
Discharge. — Measured by weir consisting of six 5-foot panels, sharp crested, and 

with a good stilling basin above. Discharge measurements made in ditch below 

weir have checked weir discharge to within 2 per cent. 
Cooperation. — The records for this weir have been furnished the Geological Survey 

by the Hawaiian Irrigation Co. (Ltd.). 

Daily discharge, in million gallons, of New Hamahua ditch at main weir, near Kukuihaele , 

Hawaii, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


35.6 
34.6 
33.9 
33.3 
32.9 

32.4 
34.3 
37.6 
37.6 
35.0 


29.6 
29.3 
30.0 
35.3 
32.1 

30.9 
30.5 
30.0 
29.9 
29.6 


38.6 
38.8 
38.7 
38.6 
38.6 

38.8 
38.6 
38.6 
38.8 
38.8 


38.8 
38.7 
38.9 
39.0 
38.9 

39.1 
39.0 
39.0 
38.9 
38.3 


38.7 
38.7 
38.9 
39.0 
38.7 

38.8 
36.2 
36.6 
36.3 
36.3 


36.2 
36.2 
35.7 
35.0 
34.5 

34.2 
34.8 
35.4 
35.2 
35.2 


37.0 
36.8 
35.7 
35.3 
37.8 

' 37.8 
37.7 
42.2 
42.9 
40.8 


31.0 
32.5 
34.9 
31.7 
30.4 

30.0 
33.6 
39.3 
42.0 
44.5 


81.1 

39.3 
47.3 
48.9 
45.8 

41.8 
44.5 
41.6 
41.1 
36.1 


41.6 
40.4 
39.2 
34.4 
31.5 

30.1 
29.5 
29.1 
29.0 
29.0 


34.5 
33.0 
31.3 
31.3 
32.1 

31.7 
30.7 
32.3 
35.1 
34.8 


33.9 


2 


35.4 


3 


34.2 


4 


34.0 


5 


34.2 


6 


34.2 


7 


34.6 


8 


34.2 


9 


34.6 


10 


34.5 



ISLAND OF HAWAII. 



371 



Daily discharge, in million gallons, of New Hamakua ditch at main weir, near Kukuihaele, 
Hawaii, for 1912 — Continued . 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


11 


33.3 
32.6 
32.2 
32.0 
31.8 

31.4 
31.1 
31.0 
30.8 
30.6 

30.5 
30.5 
30.3 
31.0 
30.7 

30.2 
30.0 
29.9 
29.8 
29.6 
29.7 


29.8 
30.1 
36.5 
35.5 
31.6 

30.5 

30.2 
29. a 
35.4 
38.3 

37.9 
37.8 
38.3 
38.6 
38.9 

38.6 
38.8 
38.4 
38.4 


38.9 

38.7 
38.8 
38.7 
38.7 

37.8 
37.8 
37.9 
37.9 
37.9 

38.2 
38.0 
38.2 
38.4 
38.6 

38.5 
38.7 
38.6 
37.4 
39.1 
39.3 


38.8 
38.5 
38.5 
38.8 
38.8 

38.7 
38.9 
41.9 
38.6 
38.8 

38.7 
38.5 
38.7 
38.9 
39.0 

38.9 

38.9 
38.6 
38.8 
38.8 


36.4 
36.4 
36.2 
36.3 
36.2 

36.5 
36.5 
36.3 
36.2 
36.1 

36.2 
36.1 
36.1 
36.3 
36.1 

36.4 
36.6 
36.6 
36.3 
36.2 
36.4 


35.3 
35.5 
34:0 
34.8 
35.1 

34.8 
35.8 
34.8 
35.0 
35.2 

34.8 
34.8 
34.8 
35.4 
36.4 

36.1 
36.9 
36.7 
36.0 
37.5 


39.9 

42.2 
41.6 
41.9 
40.8 

38.4 
38.4 
39.0 
36.5 
34.8 

34.1 
36.8 
37.8 
41.2 
37.2 

36.1 
35.4 
33.8 
33.2 
32.0 
31.1 


38.5 
43.0 
45.6 
43.8 
46.6 

39.0 
36.8 
39.4 
43.4 
35.9 

34.0 
32.2 
31.1 
30.2 
30.5 

36.5 

40.9 
43.6 
34.3 
33.2 
32.5 


35.1 
34.0 
33.0 
33.8 
34.6 

32.5 
37.2 
33.4 
32.3 
34.8 

36.9 
34.2 
31.7 
31.1 
29.9 

29.9 
29.9 
29.5 
29.3 
34.6 


28.8 
29.5 
29.5 
36.3 
33.0 

30.1 
29.5 
30.1 
38.7 
31.1 

29.5 
32.0 
49.1 
50.7 
37.4 

39.8 
50.6 
34.9 
35.3 
35.1 
34.9 


34.8 
34.8 
34.8 
34.8 
34.4 

34.2 
34.2 
33.8 
33.8 
33.6 

34.2 
34.0 
33.8 
34.2 
34.2 

34.2 
33.6 
33.8 
34.2 
34.2 


33.8 


12 


32.5 


13 


32.3 


14 


32.3 


15 


32.3 


16 


31.7 


17 


30.1 


18 


31.7 


19 


31.7 


20 


34.0 


21 


31.7 


22 


34.2 


23 


34.5 


24 


34.9 


25 


34.9 


26 


34.9 


27 


34.2 


28-. 


33.0 


29 


34.5 


30 


34.2 


31 


34.2 







Note. — The weir record includes the total flow of the ditch exclusive of water sent over the wasteway 
a few hundred feet above when it is not needed. 

Monthly discharge of New Hamakua ditch at main weir, near Kukuihaele, Hawaii, for 1912. 



Month. 



January. 
February 
March... 

April 

May 

June 

July 



Mean 


Run-off 


discharge 


(total in 


in million 


million 


gallons. 


gallons). 


32.1 


996 


33.8 


981 


38.5 


1,190 


38.9 


1,170 


36.8 


1,140 


35.4 


1,060 


37.6 


1,170 



Month. 



August 

September 

October 

November 

December 

The year 



Mean 

discharge 

in million 

gallons. 



36.8 
35.8 
34.8 
33.7 
33.6 



35.7 



Run-off 
(total in 
million 
gallons). 



1,140 
1,080 
1,080 
1,010 
1,040 



13, 100 



KOHALA GROUP OF STREAMS. 
KOHALA DITCH NEAR KOHALA, HAWAII. 

Location. — The Kohala Ditch Co. maintains three weirs, which measure the dis- 
charge carried by Kohala ditch. This ditch picks up and delivers to the planta- 
tions on the north coast of Hawaii all the run-off at low and medium stages between 
the Honokane Gulch and the northwest point of the island below the 2,000-foot 
contour. The Kehena ditch collects most of the water above the 2,000-foot contour. 

The Awini weir is in the east branch of Honokanenui Gulch at an elevation of 
1,880 feet, and is on the southeast side of the gulch. 

The Niulii weir is about 3£ miles south of Niulii, Kohala District, at an eleva- 
tion of 1,000 feet, and is about 5 miles below the Awini weir. 

The Hawi weir is about 1| miles south of the Hawi Mill near the lower end of 
the ditch. 
Records available. — Daily records of the flow of the Kohala ditch at the Awini and 
Niulii weirs have been kept by the Kohala Ditch Co. since July 1, 1907. No 
daily record has been kept of the flow at the Hawi weir, which is used mainly as 
a check on deliveries of water between Niulii and Hawi. The Niulii weir meas- 
ures the amount of water shown by the Awini weir, and also the inflow from the 
Honokanenui. The record for the Honokanenui is arrived at by subtracting the 
flow at the Awini weir from the flow at the Niulii weir. 



372 



WATER RESOURCES OF HAWAII, 1912. 



Gages. — Vertical staffs graduated to hundredths and set in at the weirs. 
Discharge measurements. — Each weir consists of three 5-foot panels with end 
contractions, sharp-beveled steel crest, and very slight velocity of approach. 

Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii, 

for 1907. 



Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 

2 


7.90 
4.77 
15.70 
4.39 
4.03 

4.03 

9.29 

2.99 

.89 

.17 


10.50 
6.59 
4.03 
20.70 
19.50 

12.50 
19.50 
18.30 
20.70 
20.70 

20.70 
18.90 
14.60 
20.70 
20.70 


5.16 
4.77 
3.32 
5.16 
2.99 

4.39 
10.50 
4.03 
2.99 
7.02 

5.76 
9.76 
10.50 
3.32 
7.46 


16.90 
15.70 
12.50 
12.00 
21.90 

21.90 
21.90 
20.70 
16.90 
20.10 

18.90 
14.10 
9.76 
11.50 
18.30 


19.50 
16.30 
21.90 
21.90 
19.50 

16.90 
12.50 
10.50 
21.90 
16.90 

11.50 
11.50 
10.50 
9.29 
13.00 


10.50 
9.29 
8.36 
8.36 
7.90 

12.50 
10.50 
9.29 
8.36 
6.59 

6.59 
5.16 
11.50 
16.90 
12.50 


16 

17 


0.89 


21.90 
15.20 
10.50 
12.50 
12.50 

16.30 
14.60 
9.29 
4.39 
7.46 

21.90 
20.70 
20.70 
18.90 
11.50 
7.46 


8.82 
4.77 
5.76 
3.67 
12.00 

10.50 
21.90 
21.90 
20.70 
16.90 

13.00 
20.70 
20.70 
17.40 
13.60 


11.50 
21.90 
21.90 
21.90 
21.90 

21.90 
21.90 
20.70 
16.90 
11.00 

9.76 
16.30 
21.90 
17.40 
15.70 
18.90 


11.50 
10.50 
9.29 
8.82 
12.50 

12.00 
14.60 
20.10 
20.70 
15.20 

14.60 
16.90 
21.90 
15.20 
12.00 




3 

4 

5 

6 

7 

8 

9 

10 

11 


18 

19..... 
20..... 

21 

22 

23 

24 

25 

26 

27 

28 

29 

30 

31 


2.66 
20.70 
11.00 

20.70 
20.70 
18.90 
16.90 
10.50 

6.59 
8.36 
19.50 
15.70 
11.00 
4.77 




12 




12.50 


13 

14 

15 


13.60 
14.10 
4.77 


16.90 
21.90 
21.90 
21.90 



Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii, 

for 1908. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


20.70 
20.70 
20.70 
15.70 
13.00 

11.50 

10.50 
8.82 
7.90 
7.02 

6.59 
6.17 
5.76 
5.76 
21.90 

20.70 
15.70 
12.50 
12.50 
15.70 

12.50 
9.76 
7.46 
6.59 
6.17 

5.76 
7.46 
7.02 
12.50 
20.70 
21.90 


16.90 
16.90 
20.70 
18.30 
20.70 

20.70 
20.70 
20.70 
20.70 
15.70 

12.50 
9.29 
8.82 
8.36 

11.50 

10.50 
11.50 
10.50 
9.29 
8.82 

8.82 
7.46 
6.59 
5.16 

4.77 

4.03 
4.03 
3.67 
3.67 


2.99 
4.77 
4.03 
4.03 
3.67 

7.46 
16.90 
12.50 
7.46 
5.76 

4.77 
4.03 
3.32 
3.32 
3.32 

7.46 
11.00 
6.59 
6.59 
5.76 

4.77 
4.77 
3.67 
3.67 
3.32 

3.32 

2.66 
2.66 
2.05 
2.05 
2.05 


5.76 
12.50 
18.30 
18.30 
14.60 

11.50 
7.46 
10.50 
15.20 
15.70 

16.90 
18.30 
20.70 
20.70 
20.70 

20.70 
20.70 
20.70 
20.70 
20.70 

20.70 
18.30 
16.90 
14.60 
11.50 

10.50 
7.46 
6.59 
6.59 
5.76 


5.76 
8.36 
9.29 
19.50 
18.30 

20.70 
20.70 
20.70 
20.70 
20.70 

20.70 
18.30 
14.60 
13.60 
12.50 

11.50 
15.70 
15.70 
16.90 
15.70 

14.60 
13.60 
16.90 
15.70 
18.30 

18.30 
18.30 
16.90 
16.90 
15.70 
14.60 


12.50 
10.50 
9.29 
11.50 
13.60 

15.70 
14.60 
13.60 
16.90 
15.70 

15.70 
18.30 
18.30 
20.70 
20. 70 

20.70 
19.50 
18.30 
20.70 
20.70 

20.70 
20.70 
20.70 
20.70 
20.70 

19.50 
18.30 
16.90 
14.60 
15.70 


18.30 
20.70 
20.70 
20.70 
20.70 

19.50 
19.50 
15.70 
16.90 
20.70 

19.50 
18.30 
16.90 
20.70 
19.50 

18.30 
16.90 
18.30 
20.70 
19.50 

18.30 
18.30 
15.70 
15.70 
20.70 

20.70 
20. 70 
20.70 
20.70 
20.70 
20.70 


20.70 
20.70 
19.50 
18.30 
18.30 

20.70 
20.70 
20.70 
19.50 
18.30 

18. 30 
16.90 
18.30 
20.70 
20.70 

20.70 
19.50 
18.30 
16.90 
15.70 

13.60 
12.50 
13.60 
18.30 
20.70 

20.70 
20.70 
19.50 
18.30 
20.70 
20.70 


20.70 
20.70 
19.50 
18.30 
16.90 

15.70 
14.10 
13.60 
13.00 
15.70 

20.70 
20.70 
19.50 
18.30 
18.30 

19.50 
18.30 
20.70 
20.70 
20.70 

20.70 
19.50 
18.30 
16.90 
15.70 

15.70 
14.60 
16.10 
15.70 
14.60 


13.60 
12.50 
11.50 
9.29 
8.36 

13.60 
15.70 
14.60 
13.60 
12.50 

11.00 
9.29 
7.46 
7.46 

20.70 

20.70 
19.50 
20.70 
18.30 
15.70 

20. 70 
19.50 
18.30 
16.90 
15.70 

14.60 
13.60 
12.00 
11.50 
10.50 
7.46 


6.59 
6.17 
5.76 
4.77 
5.16 

20.70 
19.50 
19.50 
15.70 
13.60 

10.50 
9.76 
8.82 
7.46 
5.16 

5.16 

4.77 
5.76 
9.29 
19.50 

13.60 
11.00 
8.82 
8.36 
15.20 

16.90 
20.70 
20.70 
20.70 
20.70 


20.70 


2 


20.70 


3 


20.70 


4 


19.50 


5 


18.30 


6 


20.70 


7 


20.70 


8 


20.70 


9 


20.70 


10 


20.70 


11 


19.50 


12 


18.30 


13 


15.70 


14 


14.60 


15 


14.10 


16. 


13.60 


17 


20.70 


is. . : 


20.70 


19 


20.70 


20 


20.70 


21 


20.70 


22 


19.50 


23 


18.30 


24 


16.90 


25 


20.70 


26 


20.70 


27 


19.50 


28 


18.30 


29 


16.90 


30 


15.70 


31 


14.60 







ISLAND OF HAWAII. 



373 



Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii, 

for 1909. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


14.10 
14.10 
13.60 
13.60 
13.60 

12.50 
11.50 
10.50 
9.29 
8.36 

7.46 
6.59 
5.76 
4.77 
4.03 

3.67 
3.32 
2.99 
2.99 
2.99 

2.99 

2.99 

20.70 

20.70 

20.70 

20.70 
20.70 
20.70 
19.50 
19.50 
20.70 


20.70 
19.50 
18.30 
16.90 
15.70 

20.70 
19.50 
18.30 
15.70 
14.60 

13.60 

20.70 
19.50 
18.30 
16.90 

15.70 
20.70 
20.70 
19.50 
18.30 

18.30 
20.70 
20.70 
20.70 
20.70 

20.70 
20.70 
20.70 


20.7 
28.7 
20.7 
20.7 
20.7 

20.7 
20.7 
19.5 
18.3 
18.3 

20.7 
20.7 
19.5 
18.3 
18.3 

20.7 
20.7 
20.7 
20.7 
20.7 

20.7 
20.7 
20.7 
20.7 
20.7 

20.7 
20.7 
20.7 
19.5 
18.3 
16.9 


16.30 
15.70 
20.70 
20.70 
20.70 

20.70 
20.70 
19.50 
18.90 
18.30 

16.90 
16.30 
16.30 
15.70 
15.20 

14.60 
14.10 
13.60 
13.10 
12.00 

11.00 
9.76 

8.82 
8.36 
7.90 

7.46 
6.59 
6.17 
5.76 
5.76 


4.77 
4.39 
4.03 
16.90 
20.70 

20.70 
19.50 
18.30 
16.90 
16.90 

15.70 
14.60 
14.10 
20.70 
19.50 

18.30 
16.90 
15.70 
14.60 
14.60 

14.10 

13.60 
12.50 
10.50 
8.36 

20.70 
20.70 
20.70 
20.70 
19.50 
18.30 


13.60 
11.50 
9.29 
8.36 
7.46 

6.59 

15.70 
14.60 
13.60 
11.50 

9.29 

8-36 

7.46 

20.70 

18.30 

16.90 
15.70 
14.60 
12.50 
10.50 

8.36 
6.59 
5.76 
14.10 
12.50 

10.50 
9.76 
8.82 
7.02 
8.36 


16.30 
13.60 
12.00 
8.82 
5.76 

4.77 

9.29 

20.70 

19.50 

16.90 

15.70 
20.70 
20.70 
20.70 
20.70 

20.70 
20.70 
20.70 
20.70 
20.70 

20.70 
20.70 
20.70 
18.30 
20.70 

20.70 
20.70 
20.70 
20.70 
20.70 
20.70 


19.50 
18.30 
15.70 
14.60 
13.60 

12.50 
11.50 
12.50 
11.50 
10.40 

9.76 
9.29 
8.82 
8.36 
8.36 

7.90 
7.90 
7.46 
7.02 
6.59 

5.76 
5.16 
4.39 
5.76 
7.02 

6.59 
5.16 
8.36 
12.50 
11.00 
7.46 


5.16 
5.16 
4.03 
3.66 
2.99 

2.99 
2.35 
2.35 
2.35 
2.05 

2.05 
4.39 
8.82 
19.50 
13.60 

8.82 

6.17 

14.60 

20.70 

14.10 

10.50 
6.17 
8.82 
15.70 
15.70 

14.60 
21.90 
14.60 
13.60 
12.00 


8.82 
10.90 
13.60 
11.50 
11.00 

10.50 
9.29 
7.46 
6.59 
4.03 

3.32 

6.59 
10.50 
9.29 
6.17 

5.16 
4.77 
3.32 
3.32 
3.32 

2.66 
7.46 
14.60 
14.10 
11.00 

7.46 
4.77 
4.03 
4.03 
3.67 
5.76 


7.02 
4.77 
8.36 
8.36 
8.36 

7.46 
5.16 
7.46 
9.76 
9.76 

9.29 

8.36 

12 00 

12.00 

9,76 

8.36 

7.02 
5.16 
5.16 

4.77 

4.03 
3.32 
3.32 
2.66 
2.66 

9.26 

7.46 
4.77 
3.32 
2.66 


3.32 


2 


2.99 


3.... 


2.66 


4 


2.66 




2.05 


6 


2.05 


7 


1.77 


8 


1.50 


9 


1.50 


10 


1.50 


11 


1.50 


12 


1.50 


13 


1.50 




1.50 


15 


1.24 


16 


1.24 


17 


3.32 


18 


20.70 




20.70 


20 


20.70 


21 


20.70 


22 


20.70 


23 


20.70 




15.20 


25 


11.50 


26 


20.70 


27 


15.20 


28 : 


12.50 




12.00 


30 


9.76 




8.36 







Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii, 

for 1910. 



Day. 



1 
2 
3 
4 
5 

6 
7 
8 
9 
10 

11 
12 
13 
14 

15 

16 
17 
18 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. 



6.59 
6.17 
6.17 
6.17 
7.90 

15.70 
11.50 
9.29 
8.82 
11.50 

12.50 
13.60 
19.50 
19.50 
18.30 

17.40 
18.30 
20.70 
19.50 
18.30 

18.30 
18.30 
18.30 
18.30 
18.30 

18.30 
18.30 
18.30 
18.30 
18.30 
18.30 



18.30 
19.50 
18.30 
16.90 
15.20 

14.60 
13.60 
13.60 
12.50 
12.00 

11.50 
12.50 
15.70 
13.60 
12.50 

11.50 
11.50 
11.00 
10.50 
9.29 

10.50 
15.70 
15.70 
13.00 
11.50 

9.76 
8.36 
7.90 



8.36 
15.20 
16.90 
16.30 
16.30 

13.60 
12.50 
12.50 
11.50 
9.29 

7.46 
6.59 
6.17 
5.76 

4.77 

4.03 
3.67 
3.32 
3.32 
16.90 

18.30 
18.30 
16.90 
15.70 
16.90 

18.30 
16.90 
14.60 
14.60 
16.90 
20.70 



19.50 
17.40 
16.90 
13.60 
12.50 

16.30 
14.60 
16.90 
16.30 
14.60 

13.60 
12.50 
10.50 
9.29 
9.29 

14.60 
20.70 
20.70 
20.70 
19.50 

16.30 
13.60 
10.50 
12.50 
10.50 

8.36 

7.02 
7.46 
8.36 
8.36 



20.70 
19.50 
18.90 
18.30 
19.50 

18.90 
20.70 
20.70 
19.50 
19.50 

18.90 
18.30 
16.90 
15.70 
14.60 

19.50 
18.90 
16.90 
18.30 
16.90 

14.60 
11.50 
8.36 
6.59 
5.52 

4.77 
4.39 
4.03 
4.03 
4.03 
9.76 



18.30 
17.40 
16.30 
14.60 
18.90 

18.30 
17.40 
19.50 
19.50 
18.30 

16.30 
15.70 
20.70 
19.50 
20.70 

20.70 
20.70 
20.70 
20.70 
18.30 

16.90 
18.30 
19.50 
18.30 
16.30 

15.20 

14.60 
14.60 
14.60 
14.10 



14.10 
14.60 
14.60 
20.70 
20.70 

20.70 
20.70 
20.70 
20.70 
20.70 

20.70 
20.70 
19.50 
19.50 
20.70 

20.70 
19.50 
16.90 
15.70 
15.20 

14.60 
14.10 
12.50 
12.50 
20.70 

20.70 
19.50 
16.90 
15.70 
15.70 
15.20 



15.70 
15.70 
20.70 
19.50 
19.50 

17.40 
20.70 
20.70 
19.50 
19.50 

18.90 
18.90 
20.70 
20.70 
19.50 

16.30 

12.50 

8.36 

7.90 

20.70 

20.70 
20.70 
20.70 
19.50 
17.40 

16.30 
15.20 
13.60 
12.50 
11.50 
10.50 



8.36 
7.46 
6.17 
5.76 
4.39 

3.67 
2.99 
2.66 
2.35 
2.05 

2.05 

2.05 
2.05 
2.05 
2.05 

5.76 
5.76 
5.16 
4.39 
3.32 

2.66 
2.66 
2.05 
2.05 
2.05 

2.05 
2.05 
2.05 
1.50 
4.03 



19.50 
19.50 
11.50 
10.50 
7.90 

11.00 
11.00 
20.70 
20.70 
19.50 

18.30 
11.50 
11.00 
7.90 



6.59 
6.17 
4.39 
4.39 

4.03 
10.50 
11.00 



5.16 
4.39 
4.77 
20.10 
10.50 
7.46 



5.16 

4.77 
4.77 
4.02 
3.67 

4.03 
2.66 
2.66 
2.66 
2.05 

2.99 
2.99 
2.05 
2.05 
2.05 

1.77 

5.16 

20.70 

20.70 

15.20 

15.20 
15.20 
21.90 
20.70 
15.70 

11.00 
9.76 
9.29 
20.70 
20.70 



21.90 
21.90 
20.70 
20.70 
20.70 

20.70 
20.70 
20.10 
18.30 
16.90 

12.50 
12.50 
12.00 
10.50 
10.50 

9.76 
8.82 
8.82 
7.90 
6.59 

6.17 
6.17 
6.17 
6.17 



7.46 
7.46 
7.46 
7.46 
6.17 
6.17 



374 



Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii, 

for 1911. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


15.70 


21.90 


15.70 


18.30 


19.50 


7.5 


20.70 


4.77 


18.3 


18.30 


5.16 


20.70 


21.90 


12.50 


17.40 


18.30 


16.9 


20.70 


4.77 


18.3 


18.30 


4.77 


18.90 


21.90 


12.50 


18.30 


16.90 


18.3 


20.70 


4.03 


18.3 


18.30 


4.77 


20.70 


21.90 


12.00 


16.90 


16.90 


18.3 


20.70 


3.67 


20.7 


20.70 


7.46 


20.70 


21.90 


12.00 


14.60 


16.90 


18.3 


20.70 


3.67 


19.5 


19.50 


8.82 


19.50 


21.90 


11.50 


14.60 


16.90 


19.5 


20.70 


3.21 


18.3 


18.90 


9.29 


16.90 


21.90 


11.50 


14.10 


19.50 


20.7 


20.70 


3.21 


20.7 


18.30 


10.50 


13.00 


21.90 


10.50 


14.10 


16.90 


20.7 


20.70 


3.21 


20.7 


16.90 


12.50 


13.00 


21.90 


9.76 


13.60 


20.70 


20.7 


20.70 


5.76 


19.5 


16.90 


10.50 


13.00 


21.90 


11.50 


12.50 


20.70 


20.7 


20.70 


4.77 


19.5 


15.70 


9.29 


13.00 


21.90 


11.50 


12.50 


20.70 


20.7 


20.70 


4.77 


20.7 


15.70 


10.50 


13.00 


20.70 


10.50 


12.00 


18.30 


20.7 


20.70 


4.77 


20.7 


15.70 


10.50 


12.50 


20.70 


10.50 


11.50 


16.90 


20.7 


20.70 


9.76 


19.5 


14.60 


9.29 


12.50 


19.50 


9.29 


10.50 


18.30 


20.7 


20.70 


9.76 


18.3 


13.60 


10.50 


12.50 


18.90 


8.36 


9.29 


20.70 


20.7 


20.70 


9.76 


20.7 


13.60 


12.50 


13.60 


18.30 


8.36 


9.29 


20.70 


20.7 


20.70 


9.76 


20.7 


13.60 


10.50 


14.60 


18.30 


7.90 


20.70 


20.70 


20.7 


19.50 


10.50 


20.7 


12.50 


20.70 


14.60 


16.90 


20.70 


20.70 


20.70 


20.7 


19.50 


10.50 


20.7 


11.50 


20.70 


12.50 


16.30 


19.50 


20.70 


19.50 


20.7 


16.90 


10.50 


20.7 


9.76 


20.70 


10.50 


16.30 


16.90 


20.70 


19.50 


20.7 


16.90 


12.50 


20.7 


9.76 


20.70 


10.50 


15.70 


16.90 


20.70 


19.50 


20.7 


15.70 


12.50 


20.7 


9.29 


20.70 


9.76 


14.60 


15.20 


20.70 


18.30 


20.7 


14.60 


12.50 


20.7 


9.29 


19.50 


9.76 


13.00 


13.60 


20.70 


15.70 


20.7 


11.50 


13.00 


20.7 


7.90 


18.30 


12.50 


12.50 


13.60 


20.70 


12.50 


20.7 


11.50 


13. 50 • 


20.7 


7.90 


18.30 


14.60 


11.00 


12.00 


20.70 


10.50 


20.7 


10.50 


13.50 


20.7 


7.46 


18.30 


19.50 


9.76 


12.00 


20.70 


9.29 


20.7 


8.36 


13.50 


20.7 


6.59 


16.90 


19.50 


12.50 


10.50 


20.70 


8.36 


20.7 


7.46 


13.50 


20.7 


6.17 


15.20 


20.70 


20.70 


9.76 


19.50 


8.36 


20.7 


6.59 


13.50 


20.7 


5.76 


15.20 


19.50 




8.36 


18.30 


7.46 


20.7 


5.76 


14.10 


20.7 


5.76 


15.70 


19.50 




7.02 


16.90 


7.46 


20.7 


5.76 


14.10 


20.7 


6.59 


15.70 


19.50 




20.70 




7.46 




5.76 


14.10 




6.59 





Dec. 



1 
2 
3 
4 
5 

6 

7 
8 
9 
10 

11 
12 
13 
14 
15 

16. 
17. 
18. 
19. 
20. 

21. 

22. 
23. 
24. 
25. 

26. 
27. 
28. 
29. 
30. 
31. 



10.50 
9.29 
8.26 
7.46 
7.46 

7.46 

7.90 
8.36 
8.36 
7.46 

7.46 

5.76 
13.60 
20.70 
20.70 

20.70 
20.70 
20.70 
20.70 
20.70 

20.70 
20.70 
19.50 
12.50 
11.00 

9.29 

8.82 
8.82 
8.82 
8.82 
9.76 



Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii, 

for 1912. 



Day. 



Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


7.46 


1.50 


20.70 


20.70 


15.70 


9.29 


12.50 


2.99 


5.16 


11.00 


12.00 


6.59 


1.50 


20.70 


20.70 


20.70 


9.29 


13.00 


2.99 


15.70 


9.76 


12.00 


5.76 


2.66 


20.70 


20.70 


20.70 


7.90 


14.10 


3.32 


20.70 


9.29 


9.76 


4.77 


5.16 


20.70 


20.70 


20.70 


7.02 


13.00 


3.32 


20.70 


9.76 


8.36 


4.39 


3.32 


19.50 


20.70 


19.50 


6.17 


13.00 


2.99 


1'6.90 


7.90 


9.29 


4.03 


2.05 


19.50 


20.70 


19.50 


5.16 


18.90 


2.99 


15.70 


5.76 


8.36 


4.03 


1.77 


19.50 


20.70 


16.60 


5.16 


20.70 


2.99 


15.70 


4.03 


8.36- 


12.00 


1.50 


18.30 


20.70 


16.90 


7.90 


20.70 


2.99 


15.70 


2.99 


7.46 


11.50 


1.50 


18.30 


20.70 


16.80 


12.50 


18.30 


16.90 


15.70 


2.99 


10.50 


10.50 


1.48 


18.30 


20.70 


16.90 


20.70 


16.30 


16.90 


12.50 


2.99 


20.70 


8.36 


2.99 


18.30 


20.70 


14.60 


20.70 


14.10 


15.70 


11.50 


2.99 


20.70 


6.59 


3.32 


20.70 


20.70 


13.60 


20.70 


11.50 


15.70 


12.50 


2.99 


20.70 


6.17 


9.29 


20.70 


20.70 


13.60 


18.30 


11.50 


16.90 


10.50 


2.66 


20.70 


4.77. 


10.50 


20.70 


19.50 


12.50 


16.90 


13.60 


16.80 


8.36 


7.90 


20.70 


4.77 


7.46 


19.50 


19.50 


10.50 


16.90 


11.50 


15.70 


9.29 


7.90 


20.70 


4.03 


5.16 


19.50 


19.50 


9.76 


20.70 


9.76 


13.00 


12.00 


6.59 


20.70 


4.03 


3.G7 


18.30 


19.50 


10.50 


20.70 


8.82 


10.50 


9.29 


5.16 


20.70 


4.03 


3.32 


20.70 


19.50 


10.50 


16.90 


8.82 


9.29 


9.29 


4.77 


20.70 


3.32 


4.03 


20.70 


19.50 


10.50 


19.50 


7.80 


11.50 


9.29 


7.46 


20.70 


2.66 


10.50 


20.70 


19.50 


9.76 


16.90 


7.90 


7.90 


10.50 


7.46 


20.70 


2.66 


20.70 


20.70 


18.30 


12.50 


15.20 


7.90 


7.02 


10.50 


7.46 


20.70 


2.05 


20.70 


20.70 


18.30 


10.50 


14.10 


7.90 


5.16 


10.50 


5.76 


19.50 


2.05 


18.30 


19.50 


18.30 


8.82 


14.10 


8.82 


5.16 


8.36 


16.90 


18.30 


2.05 


17.40 


19.50 


18.30 


8.82 


15.70 


11.00 


3.32 


5.76 


16.90 


13.00 


3.32 


17.40 


19.50 


18.30 


9.29 


14.10 


9.29 


3.32 


5.76 


19.50 


12.50 


2.66 


17.40 


20.70 


18.30 


10.50 


14.10 


8.36 


2.66 


5.76 


20.70 


11.50 


2.05 


20.70 


20.70 


18.30 


15.70 


12.50 


8.36 


4.39 


3.32 


20.70 


11.00 


1.77 


20.70 


20.70 


18.30 


15.70 


11.50 


7.90 


9.29 


2.66 


20.70 


11.00 


1.77 


20.70 


19.50 


18.30 


12.50 


12.50 


7.90 


7.02 


2.66 


16.90 


11.50 


1.77 




20.70 


18.30 


10.50 


14.10 


7.02 


6.59 


7.02 


12.50 


11.50 


1.50 




20.70 




10.50 




6.17 


5.16 




12.00 





Dec. 



1 
2 
2 
4 
5 

6 

7 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 

18 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



20.70 
18.30 
15.20 
11.00 
10.50 
8.82 
12.50 
16.90 
15.70 
12.50 

10.50 
8.36 
8.82 



8.36 
7.90 
8.82 
8.36 
11.00 

9.29 

9.29 

9.29 

20.70 

20.70 

20.70 
18.90 
12.50 
15.70 
12.00 
12.50 



Note.— This weir measures discharge in flowing streams when oombined flow is less than 20 million 
gallons (except for seepage gains or losses). 



ISLAND OF HAWAII. 375 

Monthly discharge of Kohala ditch at Awini weir, near Kohala, Hawaii, for 1907-1912. 



Month. 


Discharge in million 


gallons. 


Run-off 
(total in 


Maximum. 


Minimum. 


Mean. 


million 
gallons). 


1907. 
July... 


20.70 
21.90 
21.90 
21.90 
21.90 
21.90 


0.17 
4.03 
2.99 
9.76 
8.82 
5.16 


9.84 
15.30 

9.98 
17.60 
15.00 
13.00 


276 




474 


September 


299 


October 


545 


November 


449 


December 


239 






The period 






13.40 


2,280 










1908. 
January 


21.90 
20.70 
16.90 
20.70 
20.70 
20.70 
20.70 
20.70 
20.70 
20.70 
20.70 
20.70 


5.76 

3.67 

2.05 

5.76 

5.76 

9.29 

15.70 

12.50 

13.00 

7.46 

4.77 

13.60 


12.20 
11.80 
5.18 
14.90 
16.10 
17.20 
19.20 
18.80 
17.80 
14.10 
12.00 
18.80 


378 


February 


341 


March 


161 


April 


450 


May 


500 


June 


516 


July 


595 


August 


583 




533 


October 


437 




360 


December* 


584 






The year '„ 


21.90 


2.05 


15.00 


5,390 




1909. 


20.70 
20.70 
20.70 
20.70 
20.70 
20.70 
20.70 
19.50 
21.90 
14.60 
12.00 
20.70 


2.99 
13.60 
16.90 
5.76 
4.03 
5.76 
4.77 
4.39 
2.05 
2.66 
2.66 
1.24 


11.50 

18.80 

20. 1Q 

13.90 

15.70 

11.30 

17.90 

9.70 

9.31 

7.39 

6.73 

8.49 


356 


February 


527 




622 


April 


418 


May 


487 


June ." 


338 


July 


555 


August 


301 


September 


279 


October 


229 


November 


202 


December 


263 






The year 


21.90 


1.24 


12.50 


4,620 




1910. 


20.70 
19.50 
20.70 
20.70 
20.70 
20.70 
20.70 
20.70 
8.36 
20.70 
21.90 
21.90 


6.17 
7.90 
3.32 
7.02 
4.03 
14.10 
12.50 
7.90 
1.50 
4.03 
1.77 
6.17 


15.10 
13.10 
12.30 
10.40 
14.50 
17.80 
17.90 
17.20 

3.43 
10.60 

9.08 
12.20 


469 


February 


367 




383 


April 


413 




449 


June 


535 




555 


August 


532 




104 


October 


329 


November 


272 


December 


378 






The year 


21.90 


1.50 


13.10 


4,790 




1911. 


20.70 
21.90 
20.70 
20.70 
20.70 
20.70 
20.70 
14.10 
20.70 
20.70 
20.70 
20.70 


9.76 
9.76 
7.02 
9.29 
7.46 
7.50 
5.76 
8.21 
18.30 
5.76 
4.77 
5.76 


15.30 

18.40 
12.30 
16.70 
16.30 
19.80 
16.40 
9.08 
20.10 
12.60 
13.40 
12.70 


475 


February 


515 




383 


April 


502 


May 


504 


June 


596 


July 


507 
281 


August 


September 


604 


October 


391 

403 


November 


December 


393 




The year 


21.90 


3.21 


15.20 


5,550 





376 

Monthly discharge of Kohala ditch at Awini weir, near Kohala, Hawaii, for 1907-1912 — 

Continued. 



Month. 


Discharge in million gallons. 


Run-off 
(total in 


Maximum. 


Minimum. 


Mean. 


million 
gallons). 


1912. 
January 


12.00 
20.70 
20.70 
20.70 
20.70 
20.70 
20.70 
16.90 
20.70 
20.70 
^20.70 
20.70 


1.50 
1.48 
18.30 
18.30 
8.82 
5.16 
6.17 
2.66 
2.66 
2.66 
7.46 
7.90 


4.63 

8.85 
20.00 
19.60 
13.70 
13.90 
11.50 

8.08 
10.60 

9.43 
15.10 
12.70 


143 


February 


257 


March 


619 


April 


589 


May 


426 


June 


417 


July . 


357 


August 


251 


September 


319 


October 


292 


November 


454 


December 


393 






The year 


20.70 


1.48 


12. 30 


4,520 





Daily discharge, in million gallons, of Kohala ditch at Honohane weir, near Kohala, 

Hawaii, for 1907. 



Day. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


13.20 
12.50 
5.41 
16.70 
15.50 

17.10 
11.90 
16.60 
13. 00 
12.40 

11.90 

21.10 

7.58 

7.05 

11.70 

11.60 
11.90 
13.10 

.48 
10.20 

.48 

.48 

2.26 

4.28 

10.60 

14.50 
12.80 
1.67 
5.41 
10.20 
16.40 


10.60 

14.50 

17.10 

.48 

1.67 

8.63 
1.67 

2.85 
.48 
.48 

.48 
2.26 
6.50 

.48 
.48 

'"5*96* 
10.60 
8.63 
8.63 

4.85 
6.50 
11.90 
16.70 
13.70 

'"*"." 48* 

.48 

2.26 

9.65 

13.70 


18.40 
18.80 
20.30 
18.40 
20.60 

19.20 
13.10 
19.60 
20.60 
16.60 

17.80 
13.80 
13.10 
20.30 
16.10 

14.80 
14.80 
13.00 
15.10 
11.60 

13.10 
1.68 
1.68 
2.94 
6.74 

10.60 
2.94 
2.94 
6.17 

10.00 


6.74 
7.87 
11.10 
11.60 
1.68 

1.68 
1.68 
2.94 
6.74 
3.54 

4.72 
9.51 
13.80 
12.10 
5.31 

12.10 
1.68 
1.68 
1.68 
1.68 

1.68 
1.68 
2.94 
6.74 
12.60 

13. 80 
7.31 

1.68 
6.17 
7.87 
4.72 


4.13 
7.31 
1.68 
1.68 
4.13 

6.74 
11.10 
13.10 
1.68 
6.74 

12.10 
12.10 
13.10 
14.30 
10.60 

12.10 
13.10 
11.90 
12.30 
11.10 

11.60 
8.97 
3.54 
2.94 
8.42 

8.97 
6.74 
1.68 
8.42 
11.60 


13.10 


2 


14.30 


3 


15.00 


4 


13.60 


5 


14.00 


6 


11.10 


7. 


11.50 


8 


12.70 


9 


12.80 


10 


11.40 


11 


10.60 


12 


11.30 


13 


12.10 


14 .... 


6.74 


15. 


11.10 


16 


15.70 


17 


13.20 


18 


11.90 


19 


11.90 


20 


11.20 


21 . ... 


11.20 


22 


11.20 


23 


11.20 


24 


11.20 


25 


13.90 


26 


12.50 


27 


11.10 


28 


6.74 


29 


1.68 


29 


1.68 


31 


1.68 







ISLAND OF HAWAII. 



377 



Daily discharge, in million gallons, of Kohala ditch at Honokane weir, near Kohala, 

Hawaii, for 1908. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


2.94 
2.94 
2.94 

7.87 
10.60 

12.10 
13.10 
14.80 
15.70 
16.60 

11.40 
10.30 
10.70 
10.70 
1.68 

2.94 

7.87 
11.10 
11.10 

7.87 

11.10 
13.80 
13.70 
12.20 
11.80 

12.20 
10.50 
10.20 
4.72 
2.94 
1.68 


6.74 
6.74 
2.94 
5.31 
2.94 

2.94 
2.94 
2.94 
2.94 

7.87 

11.10 
14.30 
14.80 
12.00 
12.10 

13.10 
12.10 
13.10 
11.90 
12.30 

10.70 
11.30 
11.40 
10.60 
9.87 

9.90 
9.20 
9.56 
9.56 


9.55 
9.16 
9.90 
9.90 
10.30 

13.70 
6.74 
8.63 

11.20 
9.98 

9.87 
9.90 
9.21 
9.21 
9.90 

12.10 
11.00 
9.89 
9.14 

8.88 

9.16 
9.16 
8.86 
8.86 
9.21 

9.21 

8.52 
8.52 
8.48 
8.48 
8.48 


17.00 

11.10 

5.31 

5.31 

8.97 

12.10 
15.30 
13.10 

8.42 
7.87 

6.74 
5.31 
2.94 
2.94 
2.94 

2.94 
2.94 
2.94 
2.94 
2.94 

2.94 
5.31 
6.74 
8.97 
12.10 

12.30 
11.30 
10.60 
9.14 
10.70 


10.70 
10.40 
12.70 
4.13 
5.31 

2.94 
2.94 
2.94 
2.94 
2.94 

2.94 
5.31 
8.97 
10.00 
11.10 

12.10 

7.87 
7.87 
6.74 

7.87 

8.97 
10.00 
6.74 
7.87 
5.31 

5^31 
5.31 
6.74 
6.74 

7.87 
8.97 


11.10 
13.10 
13.50 
12.10 
10.00 

7.87 
8.97 
10.00 
6.74 

7.87 

7.87 
5.31 
5.31 
2.94 
2.94 

2.94 
4.13 
5.31 
2.94 
2.94 

2.94 
2.94 
2.94 
2.94 
2.94 

4.13 
5.31 
6.74 
8.97 

7.87 


6.99 
4.62 
4.62 
4.62 
4.62 

5.82 
5.82 
9.55 
8.43 
4.62 

5.82 
6.99 
8.43 
4.62 
5.82 

6.99 
8.43 
6.99 
4.62 
5.82 

6.99 
6.99 
9.55 
9.55 
4.62 

4.62 
4.62 
4.62 
4.62 
4.62 
4.62 


4,62 
4.26 
5.82 
6.99 
6.99 

4.62 
4.62 
4.62 
5.82 
6.99 

6.99 
8.43 
6.99 
4. 62 
4.62 

4.62 
5.82 
6.99 
8.43 
9.55 

11.70 

12.80 

11.70 

6.99 

4.62 

4.62 
4.62 
5.82 
6.99 
4.62 
4.62 


4.62 
4.62 
5.82 
6.99 
8.43 

9.55 
11.20 
11.70 
12.30 

9.55 

4.62 
4.62 
5.82 
6.99 
6.99 

5.82 
6.99 
4.62 
4.62 
4.62 

4.62 
5.82 
6.99 
8.43 
9.55 

9.55 
10.60 
8.43 
9.55 
10.60 


11.70 
12.80 
13.80 
16.00 
16.90 

11.70 
9.55 
10.60 
11.70 
11.90 

10.20 
10.30 
10.50 
10.50 
4.62 

4.62 
5.82 
4.62 
6.99 
9.55 

4.62 
5.82 
6.99 
8.43 
9.55 

10.60 
11.70 
11.60 
9.65 
9.85 
9.77 


12.20 
10.30 
9.98 
9.87 
10. 60 

.4.62 
5.82 
5.82 
9.55 

11.70 

9.85 
9.78 
7.66 
9.02 
9.48 

9.48 
9.87 
10.70 
11.90 
5.82 

10.00 
9.35 
9.18 
9.64 

10.10 

8.43 
4.62 
4.62 
4.62 
4.62 


4.62 


2 


4.62 


3 


4.62 


4 


5.82 


5 


6.99 


6 


4.62 


7 


4.62 


8 


4.62 


9 


4.62 


10 


4.62 


11 


5.82 


12 


6.99 


13 


9.55 


14 


10.60 


15... 


11.20 


16 


11.70 


17 


4.62 


18 


4.62 


19 


4.62 


20 


4.62 


21 


4.62 


22 


5.82 


23 


6.99 


24 


8.43 


25 


4.62 


26 


4.62 


27 


5.'82 


28 


6.99 


29 


8.43 


30 


9.55 


31 


10. 60 







Daily discharge, in million gallons, of Kohala ditch at Honolcane weir, near Kohala, 

Hawaii, for 1909. 



Day. 



Jan. 



Feb. 



Mar. 



Apr. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1. 
2. 
3. 
4. 
5. 

6. 

7. 
8. 
9. 
10. 

11. 
12. 
13. 
14. 
15, 

16. 
17. 
18, 
19 
20 

21 
22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



11.20 
11.20 
11.70 
11.70 
11.70 

12.80 
13.80 
13.10 
11.90 
12.80 

12.90 
13.00 
13.80 
14.00 
13.20 

13.60 
12.40 
12.70 
12.70 
12.70 

12.70 

12.70 

4.62 

4.62 

4.62 

4.62 
4.62 
4.62 
5.82 
5.82 
4.62 



4.62 
5.82 
6.99 
8.43 
9.55 

4.62 
5.82 
6.99 
9.55 
10.60 

11.70 
4.62 
5.82 



4.62 
4.62 
4.62 
4.62 

4.62 
4.62 
4.62 



4.62 
4.62 
4.62 
4.62 
4.62 

4.62 
4.62 
5.82 
6.99 
6.99 

4.62 
4.62 
5.82 
6.99 



4.62 
4.62 
4.62 
4.62 
4.62 

4.62 
4.62 
4.62 
4.62 
4.62 

4.62 
4.62 
4.62 
5.82 
6.99 
8.43 



8.99 
9.55 
4.62 
4.62 
4.62 

4.62 
4.62 
5.82 
6.41 
6.99 

8.43 
8.99 
8.99 
9.55 
10.10 

10.60 
11.20 
11.70 
12.30 
13.30 

14.30 
15.50 
16.50 
16.90 
16.50 

14.50 
13.70 
11.10 
10.70 
10.70 



13.20 
12.10 
12.50 
6.74 
4.62 



5.82 
6.99 
8.43 
8.43 

9.55 

10.60 

11.20 

4.62 

5.82 



8.43 
9.55 
10.60 
10.60 

11.20 
11.70 
10.30 
11.50 
13.60 

4.62 
4.62 
4.62 
4.62 
5.82 



5.99 
7.28 
7.94 
10.40 
11.30 

12.20 
9.55 
10.60 



9.48 
9.64 
17.80 
4.62 
6.99 

8.43 
9.55 
10.60 
12.80 
14.80 

12.80 
13.00 
11.50 
11.20 
12.80 

13.10 
13.00 
9.18 
8.72 
10.40 



12.00 
10.90 
10.80 
9.18 



9.87 
11.90 
10.30 
11.50 
14.10 

15.30 
10.30 
10.30 

7.65 
7.65 

7.65 
7.65 
7.65 
7.65 
7.65 

7.65 
7.65 
7.65 
10.00 
-7. 65 

7.65 

7.65 
7.65 
7.65 

7.65 
7.65 



8.85 
10.00 
12.60 
13.70 
14.80 

15.80 
16.80 
15.80 
16.80 
17.80 

13.80 
14.30 
13.10 
13.60 
13.60 

13.20 
13.20 
13.70 
11.70 
9.89 

10.70 
9.48 
9.54 
13.00 
12.50 

11.40 
10.60 
15.20 
11.90 
11.00 
9.02 



10.60 
10.60 
9.90 
9.56 
9.55 

9.55 
9.51 
9.51 
10.20 
10.50 

11.90 
10.30 
14.80 
21.30 
15.60 

10.70 
10.30 
20.10 
36.30 
14.20 

14.80 
9.56 
13.10 
15.30 
15.30 

14.60 
45.00 
16.40 
14.80 
11.60 



10.70 
11.80 
14.80 
12.10 
11.80 

10.60 
11.90 
9.77 
9.89 
9.20 

9.21 
12.20 
13.10 
10.30 
10.30 

9.48 
9.16 
9.21 
9.21 
9.90 

9.19 
12.10 
16.40 
14.20 
13.50 

12.10 
11.70 
11.70 
10.60 
10.30 
9.98 



12.50 
11.00 
15.20 
15.20 
14.40 

10.50 
10.60 
13.70 
14.70 
14.70 

15.20 
11.20 
16.30 
16.30 
14.70 

12.00 
10. 20 
10.60 
9.48 
9.16 

9.20 
9.21 
9.21 

9.87 
9.87 

11.90 
10.50 
9.87 
9.21 
9.19 



9.21 
9.55 
9.19 
9.19 
8.48 

8.48 
8.12 
7.76 
7.76 
7.76 

7.76 
7.76 
7.76 
7.76 
7.40 

7.40 
9.21 
12.20 
14.10 
12.20 

16.10 
46.20 
14.10 
13.10 
10.50 

12.20 
13.10 
11.10 
11.60 

9.78 
10. 40 



378 

Daily discharge, in million gallons, of Kohala ditch at Honohane weir, near Kohala, 

Hawaii, for 1910. 



Day. 



1 

2 
3 
4 
5 

6 

7 
8 
9 
10 

11 
12 
13 
14 
15 

16 
17 
18 
19 
20 

21 

22 
23 
24 
25 

26 
27 
28 
29 
30 
31 



Jan. 



9.14 

8.47 
8.47 
8.47 
11.60 

15.30 
10.50 
11.10 
8.41 
12.10 

11.90 
14.80 
15.30 
15.30 
12.70 

13.60 
14.60 
20.10 
15. 30 
16.50 

16.50 
12.70 
12.70 
11.80 
10.00 

10.00 
10.00 
10.00 
10.00 
10.00 
10.00 



Feb. 



10.00 
8.85 
10.00 
11.50 
13.10 

13.70 
14.80 
14.80 
15.80 
12.40 

12.10 
11.90 
19.00 
14.80 
12.80 

13.00 
13.00 
12.60 
12.30 
13.50 

13.10 
12.60 
12.60 
15.30 
13.00 

13.80 
15.20 
15.70 



Mar. 



16.10 
15.80 
14.10 
12.00 
12.00 

14.80 
15.80 
15.80 
12.10 
12.70 

14.50 
13.70 
13.40 
13.00 
12.50 

12.50 
12.80 
12.40 
12.40 
17.90 

16.50 
16.50 
17.90 
19.00 
17.90 

16.50 
17.90 
20.10 
20.10 
12.30 
7.65 



Apr. 



8.85 
10.90 
11.50 
14.80 
15.80 

12.00 
13.70 
11.50 
12.00 
13.70 

14.80 
15.80 
13.90 
14.30 
14.30 

13.70 
14.10 
14.10 

8.54 
8.85 

12.00 
10.90 
11.50 
11.90 
14.80 

22.60 
15.80 
15.30 
15.20 
16.10 



May. 



7.65 
8.85 
9.44 
10.00 

8.85 

9.44 

7.65 
7.65 
8.85 
8.85 

9.44 
10.00 
11.50 
12.60 
13.70 

8.85 
9.44 
11.50 
10.00 
11.50 

7.32 
10.50 
13.60 
15.40 
15.60 

15.60 
15.90 
15.50 
14.00 
14.70 
9.78 



June. 



10.00 
10.90 
12.00 
13.70 
9.44 

10.00 
10.90 

8.85 
8.85 
10.00 

12.00 
12.60 
7.65 

8.85 
7.65 

7.65 
7.65 
7.65 
7.65 
10.00 

11.50 
10.00 
8.85 
10.00 
12.00 

13.10 
13.70 
13.70 
13.70 
14.20 



July. 



17.60 
17.10 
17.10 
11.10 
11.10 

11.10 
11.10 
11.10 
11.10 
11.10 

11.10 
11.10 
12.30 
12.30 
11.10 

11.10 
12.30 
14.90 
16.00 
16.60 

17.10 
17.60 
19.20 
19.20 
11.10 

11.10 
12.30 
14.90 
16. 00 
16.00 
16.60 



Aug. 



16.00 
16.00 
11.10 
12.30 
12.30 

14.30 
11.10 
11.10 
12.30 
12.30 

12.90 
12.90 
11.10 
11.10 
12.30 

15.40 
11.90 
10.40 
11.60 
22.20 

22.20 
14.20 
11.10 
12.30 
14.30 

15.40 
16.60 
18.20 
11.90 
11.30 
12.30 



Sept. 



12.80 
10.50 
11.80 
9.98 
11.30 

11.00 
11.70 
12.00 
12.30 
12.60 

12.60 
11.90 
11.20 
11.20 
12.60 

12.20 
10.70 
10.60 
10.30 
9.21 

9.19 
9.19 
9.13 
9.13 
9.13 

9.13 
9.13 
9.13 
9.03 
12.50 



Oct. 



12.30 
12.30 
12.10 
12.30 
10.10 

10.20 
10.20 
14.10 
14.10 
15.30 

16.50 
12.10 
11.00 
8.58 
9.14 

9.14 
9.14 
7.76 
8.14 
8.14 

14.00 
11.50 
11.80 
10.40 
9.77 

10.60 
8.83 
11.00 
12.80 
11.50 
10.50 



Nov. 



10. 60 
9.87 
9.87 
9.20 
8.86 

9.90 
9.19 
9.19 
9.19 
9.13 

10.20 
10.20 
9.80 
9.13 
9.13 

8.12 
12.10 
14.10 
11.10 
14.90 

14.90 
14.90 
20.90 
20.10 
16.00 

12.60 
13.00 
11.90 
22.20 
18.10 



Dec. 



9.82 
9.82 
11.10 
11.10 
11.10 

11.10 
11.10 
11.70 
13.40 
14.90 

13.60 
13.60 
14.10 
13.10 
13.10 

13.00 
13.10 
12.30 
12.40 
11.40 

11.10 
11.10 
11.10 
11.10 
11.52 

12.10 
12.10 
12.10 
12. 10 
11.80 
11.80 



Daily discharge, in million gallons, of Kohala ditch at Honohane weir, near Kohala, 

Hawaii, for 1911. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


16.0 
11.1 
12.9 
11.1 
11.1 

12.3 
14.9 

18.7 
18.7 
18.7 

18.7 
18.7 
19.2 
19.2 
19.2 

18.2 
17.1 
17.1 
19.2 
14.8 

13.1 
13.0 
22.0 
19.2 
17.1 

12.3 

12.3 

11.1 

12.3. 

12.3 

12.3 


9.82 
9.82 
9.82 
9.82 
9.82 

9.82 
9.82 
9.82 
9.82 
9.82 

9.82 
11.10 
11.10 
12.30 
12.90 

13.40 
13.40 
14.90 
15. 50 
15.50 

16.00 
17.10 
18.70 
19.20 
20.80 

22.00 
19.20 
11.10 


16.00 
11.90 
11.90 
12.40 
12.40 

12.10 
12.10 
12.30 
11.40 
13.00 

13.00 
13.10 
11.50 
10.30 
10.40 

10.40 
10.10 
11.10 
12.30 
14.90 

14.90 
16.60 
18.20 
18.20 
19.70 

13.30 
12.30 
9.78 
9.64 
10.20 
18.10 


13.4 
14.3 
13.4 
14.9 
17.2 

17.2 
17.6 
17.6 
13.9 
11.9 

11.9 
12.4 
13.0 
12.3 
11.1 

12.7 
18.1 
18.1 
18.1 
18.1 

18.1 
18.1 
18.1 
16.9 
11.1 

11.1 
11.1 
12.3 
13.4 
14.9 


12.3 
13.4 
14.9 
14.9 
14.9 

14.9 
12.3 
14.9 
11.1 
11.1 

11.1 
13.4 
14.9 
13.4 
11.1 

11.1 
11.1 
11.1 
12.3 
12.3 

12.3 
13.4 
16.0 
15.8 
13.1 

13.5 
13.6 
12.8 
13.7 
13.7 
13.7 


21.7 
19.9 
18.5 
13.4 
13.4 

12.3 
11.1 
11.1 
11.1 
11.1 

11.1 
11.1 
11.1 
11.1 
11.1 

11.1 
11.1 
11.1 
11.1 
11.1 

11.1 
11.1 
11.1 
11.1 
11.1 

11.1 
11.1 
11.1 
11.1 
11.1 


11.1 
11.1 
11.1 
11.1 
11.1 

11.1 
11.1 
11.1 
11.1 
11.1 

11.1 
11.1 
11.1 
11.1 
11.1 

11.1 
12.3 
12.3 
14.9 
14.9 

16.0 
17.1 
13.8 
13.8 
13. Q 

14.4 
14.5 
14.5 
13.8 
13.8 
13.8 


11.7 
11.7 
11.7 
11.0 
10.3 

10.6 
10.6 
10.6 
11.5 
11.7 

11.0 
12.5 
13.0 
13.0 
13.0 

13.0 
13.1 
13.1 
13.1 
12.8 

11.9 
11.9 
11.4 
11.7 
11.7 

11.7 
11.7 
11.7 
12.0 
12.0 
12.0 


13.4 
13.4 
13.4 
11.1 
12.3 

13.4 
11.1 
11.1 
12.3 
12.3 

11.1 
11.1 
12.3 
13.4 
11.1 

11.1 
11.1 
11.1 
11.1 
11.1 

11.1 
11.1 
11.1 
11.1 
11.1 

11.1 
11.1 
11.1 
11.1 
11.1 


13.40 
13.40 
13.40 
11.10 
12.30 

12.90 
13.40 
14.90 
14.90 
16.00 

16.00 
16.00 
17.10 
18.20 
18.20 

18.20 
13.60 
13.00 
10.60 
10.60 

11.10 
11.10 
10.10 
10.10 
10.50 

9.89 
10.30 
9.98 
9.98 
9.89 
9.89 


11.30 
11.00 
11.00 
10.50 
13.10 

14.30 
13.90 
13.60 
13.90 
14.30 

13.90 
13.10 
13.50 
13.90 
13.60 

13.90 
11.10 
11.10 
11.10 
11.10 

11.10 
12.30 
13.40 
13.40 
13.40 

9.28 
10.10 
10.10 
10.40 
10.40 


13.90 


2 


14.30 


3 


13.60 


4 


12.90 


5 


12.90 


6 


12.90 


7 


14.00 


8 


13.60 


9 


12.80 


10 


12.90 


11 


12.90 


12 


9.98 


13 


10.90 


14 


11.10 


15 


11.10 


16 


11.10 


17 


11.10 


18 


11.10 


19 


11.10 


20 


11.10 


21.... 


11.10 


22 


11.10 


23 


12.30 


24 


12.80 


25 


11.80 


26 


12.70 


27 


12.30 


28 


13.10 


29 


14.00 


30 


14.00 


31 


14.70 







ISLAND OF HAWAII. 



379 



Daily discharge, in million gallons, of Kohala ditch at Honolcane weir, near Kohala, 

Hawaii, for 1912. 



Day. 


Jan. 


Feb. 


Mar. 


Apr. 


May. 


June. 


July. 


Aug. 


Sept. 


Oct. 


Nov. 


Dec. 


1 


14.50 
13.70 
13.80 
14.00 
14.40 

12.50 
12.50 
12.40 
13.00 
11.50 

11.20 
11.40 
11.10 
11.00 
11.00 

9.90 
9.90 
9.90 
9.90 
9.87 

9.87 
9.80 
9.80 
9.80 
13.20 

12.00 
11.20 
10.80 
10.80 
10.10 
9.69 


9.69 
9.69 
13.10 
14.30 
15.40 

11.90 
10.80 
10.40 

970 

9.55 
9.90 
13.50 
13.10 
10.50 

10.60 
10.30 
9.90 
12.50 
13.10 

30.80 
30.80 
18.50 
14.30 
14.30 

14.30 
16.10 
26.50 
26.50 


11.10 
11.10 
11.10 
11.10 
12.30 

12.30 
12.30 
13.40 
13. 40 
13.40 

13.40 
11.10 
11.10 
11.10 
12.30 

12.30 
13.40 
11.10 
11.10 
11.10 

11.10 
11.10 
12.30 
12.30 
12.30 

11.10 
11.10 
11.10 
12.30 
11.10 
11.10 


11.10 
11.10 
11.10 
11.10 
11.10 

11.10 
11.10 
11.10 
11.10 
11.10 

11.10 
11.10 
11.10 
12.30 
12.30 

12.30 
12.30 
12.30 
12.30 
12.30 

13.40 
13.40 
13.40 
13. 40 
13.40 

13.40 
13.40 
13.40 
13.40 
13.40 


16.00 
11.10 
11.10 
11.10 
12.30 

12.30 
14.90 
14.90 
14.90 
14.90 

17.10 

18. 20 
18.20 
12.80 
11.50 

11.40 
13.90 
13.90 
13.90 
13.80 

19.20 
13.90 
11.50 
11.50 
13.50 

13.90 
16.00 
16.00 
13.60 
14.80 
13.90 


12.70 
12.70 
11.60 
10.20 
10.30 

10.60 
10.60 
12.40 
13.60 
11.10 

11.10 
11.10 
13.40 
14.90 
14.90 

11.10 
11.10 
14.90 
12.30 
14.90 

16.60 
17.60 
17.60 
16.00 
17.60 

17.60 
13.60 
12.10 
10.30 
11.20 


11.10 
11.40 
12.00 
12.30 
12.30 

12.90 
11.10 
11.10 
13.40 
15.40 

12.00 
12.10 
12.10 
12.60 
13.00 

13.00 
12.30 
12.30 
10.90 
10.90 

10.90 
10.90 
11.50 
12.60 
13.50 

10.40 
10.40 
10.10 
10.10 
9.46 
9.56 


10.20 
10.90 
11.30 
11.30 
10.90 

10.90 
10.90 
10.90 
14.90 
14.90 

16.00 
16.00 
14.90 
14.90 
16.00 

12.30 
11.50 
11.10 
12.10 
10.10 

10.20 

10.60 

10.60 

9.90 

9.90 

9.87 
10.30 
12.70 
11.00 
10.60 
10.60 


10.60 
16.00 
11.10 
11.10 
14.90 

16.00 
16.00 
16.00 
16.00 
11.90 

11.30 
11.90 
11.50 
11.20 
11.10 

14.10 
12.70 
10.30 
11.10 
10.60 

11.50 

10.60 

10.40 

9. 98 

9.98 

9.98 
9.21 
9.19 
9.19 
10.20 


14.30 
13.00 
12.70 
13.80 
11.60 

9.98 
9.90 
9.54 
9.54 
9.54 

9.54 
9.54 
9.19 
11.60 
11.60 

10.60 
9.48 
9.16 
10.50 
10.50 

10.50 
9.98 
14.90 
14.90 
12.30 

11. 10 
11.10 
11.10 
14.90 
13.60 
13.30 


13.30 
12.40 
12.20 
10.40 
11.10 

10.40 
10.40 
10.50 
12.30 
11. lO- 
ll. 10 
11.10 
11.10 
11.10 
11.10 

11.10 
11.10 
11.10 
11.10 
11.10 

11.10 
12.30 
13.40 
13.10 
12.80 

13.00 
12.60 
12.60 
13.00 
13.00 


11.10 


2.. 


13.40 


3 


16.60 


4 


12.60 


5 


12.30 


6 


12.30 


7 


12.80 


8 


14.90 


9 


16.00 


10 


12.80 


11 


12.30 


12 


11.20 


13 


11.50 


14 


11.50 


15 


11.50 


16 


11.20 


17 


10.90 


18 


12.30 


19 


11.20 


20 


12.60 


21 


12.70 


22 


12.70 


23 


12.70 


24 


11.10 


25 


11.10 


26 


11.10 


27 


12.90 


28 

29 


12.80 
16.00 


30 


12.40 


31 


12.80 







Note. — The Niulii weir measures the discharge of the Honokane Stream, east and west branches, and 
also flow over Awini weir when the combined discharge is not over 30 million gallons (except for seepage 
gains or losses). 

Monthly discharge of Kohala ditch at Honokane weir, near Kohala, Hawaii, for 1907. 



Month. 


Discharge in million gallons. 


Run-off 
(total in 


Maximum. 


Minimum. 


Mean. 


million 
gallons). 


July... 


21.10 
17.10 
20.60 
13.80 
14.30 
15.70 


0.48 
.48 
1.68 
1.68 
1.68 
1.68 


10.30 
6.30 

13.20 
6.03 
8.46 

11.00 


320 


August 


183 


September 


395 


October 


187 


November 


254 


December 


339 






The period 






9.22 


1,680 









380 

Monthly discharge of Kohala ditch at Honohane weir, near Kohala, Hawaii, for 1908-1912. 



Month. 


Discharge in million gallons. 


Run-off 
(total in 


Maximum. 


Minimum. 


Mean. 


million 
gallons). 


1908. 
January 


16.60 
14.80 
13.70 
17.00 
12.70 
13.50 
9.55 
12.80 
12.30 
16.90 
12.20 
11.70 


1.68 
2.94 
6.74 
2.94 
2.94 
2.94 
4.62 
4.62 
4.62 
4.62 
4.62 
4.62 


9.36 

9.08 
9.52 
7.67 
7.05 
6.39 
6.12 
6.51 
7.49 
9.77 
8.64 
6.47 


290 


February 


263 




295 


April 


230 


May 


219 


June 


192 


July 


190 


August 


202 


September 


225 


October 


303 


November 


259 


December , 


201 






The year 


17.00 


1.68 


7.84 


2,870 






1909. 
January 


14.00 
11.70 
8.43 
16.90 
13.60 
17.80 
15.30 
17.80 
45.00 
16.40 
16.30 
46.20 


4.62 
4.62 
4.62 
4.62 
4.62 
4.62 
7.65 
8.85 
9.51 
9.16 
9.16 
7.40 


10.40 

6.65 

5.24 

10.20 

8.42 

10.40 

9.24 

12.80 

14. 50 

11.20 

11.90 

11.20 


322 


February 


186 




162 


April 


306 




261 




312 


July 


286 


August 


397 




435 


October 


346 




356 


December 


347 






The year 


46.20 


4.62 


10. 20 


3,720 






1910. 


20.10 
19.00 
20.10 
22.60 
15.90 
14.20 
19.20 
22.20 
12.80 
16.50 
22.20 
14.90 


8.41 
8.85 
7.65 
8.54 
7.32 
7.65 
11.10 
10.40 
9.03 
7.76 
8.12 
9.82 


11.70 
13.30 
14.80 
13.40 
11.10 
10.50 
13.80 
13.60 
10.80 
10.80 
12.30 
12.00 


362 


February 


371 




459 




403 




344 




315 


July 


429 


August 


420 




325 


October 


336 


November : . 


368 


December 


373 






The year. 


22.60 


7.32 


12.30 


4,500 






1911. 
January 


22.00 
22.00 
19.70 
18.10 
16.00 
21.70 
17.10 
13.10 
13.40 
18. 20 
14.30 
14.70 


11.10 

. 9.82 
9.64 
11.10 
11.10 
11.10 
11.10 
10.30 
11.10 
9.89 
9.28 
9.98 


15.60 
12.80 
13.00 
14.70 
13.20 
12. 20 
12.60 
11.90 
11.60 
12.90 
12.20 
12.40 


484 


February 


372 




404 




442 




408 


June '. 


366 


July 


391 


August 


369 




349 


October 


400 




367 


December 


385 






The year 


22.00 


9.28 


13.00 


4,740 






1912. 
January 


14.50 
30.80 
13.40 
13.40 
19.20 
17.60 
15.40 
16". 00 
16.00 
14.90 
13.40 
16.60 


9.69 
9.55 
11.10 
11.10 
11.10 
10.20 
9.46 
9.87 
9.19 
9.16 
11.10 
11.10 


11.40 
14.50 
11.80 
12.10 
14.10 
13.20 
11.70 
11.90 
11.90 
11.40 
11.70 
12.60 


355 


February 


420 




366 


April 


364 




436 


June 


396 




364 


August 


368 




356 




353 


November 


352 




389 






The year 


30.80 


9.19 


12.30 


4,520 







RAIN GAGING. 



381 



MISCELLANEOUS MEASUREMENTS. 

Miscellaneous measurements on Hawaii in 1912. 



Date. 


Stream. 


Locality. 


Dis- 
charge. 


Oct. 11 




Near Hilo 


Sec.-ft. 
2.18 


Dec. 5 


do 

Pukihae 




6.80 


July 15 
Oct. 11 




33.20 


do 

do 


Near Hilo, 40 feet above railroad culvert 


9.36 


Dec. 5 


Near Hilo, just above railroad culvert 


25.30 


July 15 
Sept. 18 

18 


...do 


33.90 




Just below mouth of Kikola Stream, government 

road, near Hilo. 
40 feet above concrete highway bridge, government 

road, near Hilo. 
30 feet above concrete highway bridge, government 

road, near Hilo. 


64.20 




17.20 


18 


Kikola 


2.71 


18 




21.50 


19 


Kapue River 


do 


16.57 


19 


Kapue flume 


do 


5.30 


19 




...do... *. 


4.61 


19 




...do... 


11.80 


19 




. . .do . 


3.46 


19 




. .do 


.33 


Oct. 9 






No flow. 


g 






3.87 


g 




do 


4.06 


12 




.do 


8.43 


10 






8.25 


10 




.do 


4.16 


9 






5.35 


10 






6.57 


10 




..do 


.28 


Feb. 8 






65.40 


Dec. 14 


No.l 


About 1,400 feet elevation, near Hilo 


17.40 


Sept. 5 
21 


Linoli Springs 

Weir, Hilo Electric Light 

Oo. 
Tailrace, Hilo Electric Light 

Co. 


Near Ponolu 


8.38 


Wailuku River, near Hilo 


10.90 


Oct. 19 


Hilo...^. 


25.00 



RAIN GAGING. 

The yearly rainfall of the Hawaiian Islands is extremely variable, 
ranging from a few inches at several low-level leaward localities to 
more than 400 inches, usually at elevations above 2,000 feet and on 
the windward sides of the islands. Valleys lying on the same sides of 
the islands and within a few miles of each other may have a variation 
in mean annual precipitation of several hundred per cent. The rain- 
fall may also vary greatly at different elevations in the same valley. 
As a rule, the zone of heaviest precipitation is on the windward sides 
of the islands, at elevations 2,000 to 3,000 feet above sea level. 

Generally the daily rain gages maintained by the United States 
Weather Bureau are located at low levels. Lack of funds and the 
absence of inhabitants at high-level localities have prevented the 
maintenance of Weather Bureau stations at high levels, although 
daily records for a number of places, are furnished that bureau by 
occupants and caretakers of mountain houses, ranches, etc. The 
data furnished by the Weather Bureau are, therefore, generally of 
little value in their relation to stream run-off. 

When high levels are accessible and, insofar as funds are available, 
high-level rain gages, which are read monthly or bimonthly, have 



382 WATER RESOURCES OF HAW An, 1912. 

been established by the Geological Survey and valuable records have 
been obtained. To accurately determine the precipitation of the Ter- 
ritory would require the installation of many more gages and the con- 
struction of many miles of trails. 

Acknowledgment for cooperation in furnishing rainfall data is due 
to the following: Kauai — E. A. Knudsen, Kekaha Sugar Co., Makee 
Sugar Co., Hawaiian Sugar Co., Koloa Plantation, Grove Farm Plan- 
tation, W. F. Sanborn, of Prince ville ranch, and A. Menefoglio, of 
Kauai Electric Co.; Oahu — E. E. Miller and F. Meyer; Maui — George 
Gibb, E. Brecht, H. B. Penhallow, David Fleming, Honolua ranch, 
Hawaiian Commercial & Sugar Co., S. E. Hubbard, and E. Brecht; 
Hawaii — Hawaii Mill Co., P. W. P. Bluett, James Henderson, George 
F. Whittemore, W. S. May, and C. F. Clark. 

The following tables show the precipitation at stations maintained 
by the Geological Survey and give precipitation data furnished from 
private sources which are not included in United States Weather 
Bureau records, to which those interested in further data are 
referred: 



RAIN GAGING. 



383 



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INDEX. 



A. Page. 

Accuracy of discharge measurements, degree 

of 24 

Acre-foot, definition of 17 

Ah Lo flume, Kaneohe, Oahu, Waikalua 

ditch at 128 

Akulikuli Spring near Kapaa, Kauai 84 

Aleamai Stream near Hilo, Hawaii 381 

Alo division weir, near Huelo, Maui, Koolau 

ditch at 209 

Alo Stream near Huelo, Maui 168-169 

Altitude of islands 30 

Anahola ditch at Kiokala, near Kealia, 

Kauai 89-90 

Anahola River at Kiokala, near Kealia, 

Kauai 88-89 

near Kealia, Kauai 87-88 

Anahola River basin (Kauai), measurements 

in 87-90 

Area of islands 30 

Authority for investigations 9 

Awini weir, near Kohala, Hawaii, Kohala 

ditch at 372-376 

B. 

Bailey, C. T., work of 25 

Book, H. L., work of 25 

Bridge station, definition of 15 

C. 

Cable station, definition of 15 

Center ditch near Huelo, Maui 186-188 

Center ditch region, Maui, measurements 

in 186-188 

China ditch near Hanalei, Kauai 92-93 

Christiansen, E. O., work of 25 

Climate, character of 33 

College of Hawaii, near Honolulu, Oahu, 

Manoa Stream at " 108 

Cooperation with Hawaii 10 

Current meters, use of 13-15 

D. 

Definitions of terms 16-17 

Discharge, definition of 16 

field methods of measuring 11-16 

office methods of computing 19-22 

Discharge measurements, accuracy of 24 

tables of, explanation of 22, 23-24 

Dort, J. C, work of 25 

Dort, S. W., work of 25 

E. 

East Maui, miscellaneous measurements on.. 209 

Eleele, Kauai, Eleele ditch at 98 

Hanapepe ditch at and near 57-60 

seepage from 99 



Eleele, Kauai, Wahiaua Stream at 98 

Equivalents, list of 18 

Everett ditch (Maui). See Palo lo ditch. 

F. 

Field data, accuracy and reliability of 24 

Field methods of measuring stream flow 11-16 

G. 

Gage, automatic, description of 16 

Gage heights, table of, explanation of 22-23 

Gaging stations, classes of 11, 15, 19-20 

lists-of 25-29 

Geography, description of 29-33 

Goo,E. E., workof 25 

Goo, R. M. S., workof 25 

H. 

Haiku ditch at Peahi weir, near Huelo, Maui. 208 

Haipuaena Stream near Huelo, Maui 164-166 

Hakenanahu Stream at Lihue, Kauai 98 

Halehaku Stream at Lihue, Kauai 98 

near Huelo, Maui 194-195 

Halehaku Stream (North Fork) at Waimea, 

Kauai 98 

Halehaku weir, near Huelo, Maui, New 

Hamakua ditch at 199 

Halekua Stream near Waimea, Kauai 50 

Halona Stream in Upper Waiahole Valley, 

Oahu 128 

Halona Stream (North Fork) ha Upper 

Waiahole Valley, Oahu 128 

Hamakua ditch region, Maui, measurements 

in '.. 188-208 

Hamakua group of streams, Hawaii, meas- 
urements on 367-371 

Hamakuapoko, Maui, Kaluanui ditch near. 205-206 

Hanalei, Kauai, China ditch near 92-93 

Hanalei River near 91-92 

Kaua ditch at 98 

Kiaiakua ditch at 98 

Kiaiakua stream at 98 

Kuna ditch near 93-95 

Hanalei River basin (Kauai), measurements 

in 91-95 

Hanamaulu ditch near Lihue, Kauai 70-71 

Hanamaulu River at Kapaia, near Lihue, 

Kauai ' 64-66 

Hanamaulu River basin (Kauai), measure- 
ments in 64-66 

Hanapepe ditch near Eleele, Kauai (at Hana- 
pepe Falls) 57-58 

near Eleele, Kauai (at Koula) 59-60 

seepage from 99 

near Hanapepe, Kauai 60-61 

near Makaueli, Kauai, at Hanapepe weir. 98 

387 



388 



INDEX. 



Hanapepe Falls, near Eleele, Kauai, Hana- 

pepe ditch near 57-58 

Hanapepe River at 62 

Hanapepe River (East Branch) at 55 

Hiloa ditch at 62-63 

Hanapepe River (Kauai), Manuahi Stream 

above 98 

Hanapepe River basin (Kauai), measure- 
ments in 55-63 

Hanapepe River (East Branch) at Hanapepe 

Falls, near Eleele, Kauai 55 

Hanapepe River at Hanapepe Falls, near 

Eleele, Kauai 62 

at Koula, near Eleele, Kauai 55-57 

Hanapepe weir, near Makaueli, Kauai, Hana- 
pepe ditch at 98 

Hanawai Stream near Papaikou, Hawaii 381 

Hanawai Stream, tributary of, near Hilo, 

Hawaii 381 

Hardy, W. V., work of 25 

Hawaii, gaging stations on 29 

miscellaneous measurements on 381 

precipitation on 385 

Hawaiian Archipelago, altitude of 30 

area of 30 

climate of 33 

geography of 29-33 

Hawaii College. See College of Hawaii. 

Hilo, Hawaii, Aleamai Stream near 381 

Hanawai Stream, tributary of, near 381 

Hilo Electric Light Co. weir near 381 

tailrace at 381 

Honolii River near 213-215, 381 

Kaieie Stream near 381 

Kalooa Stream near .' 381 

Kapue flume near 381 

Kapue River near 381 

Kawainui River near 215-216 

Kikola Stream near 381 

Kumunuiakea River near 381 

Maili River near 381 

No. 1 Stream near 381 

Pohakunanaka River near 381 

Pukihae River near 381 

Hilo, Hawaii, stations near, records of 216-367 

Wailuku River near 212-213 

Hilo Electric Light Co. tailrace at Hilo, Ha- 
waii 381 

Hilo Electric Light Co. weir at Wailuku 

River, near Hilo, Hawaii 381 

Hilo group of streams, Hawaii, measurements 

in 212-367 

Hiloa ditch at Hanapepe Falls, near Eleele, 

Kauai 62-63 

Homestead, Kauai, Lawai Stream at 98 

Honokahau, Maui, Honolua ditch near 158 

Honokahau ditch above Honolua Stream at 

Honokahau, Maui 162 

at Honokawai weir, near Honokahau, 

Maui 160-161 

at intake, near Honokahau, Maui 158 

near Honokahau, Maui 159-160 

Honokahau Stream basin (Maui), measure- 
ments in 159-161 



Page. 
Honokane weir, near Kohala, Hawaii, Kohala 

ditch at. . . . 376-380 

Honokawai ditch near Lahaina, Maui 157 

Honokawai Stream basin (Maui), measure- 
ments in 157 

Honokawai weir, near Honokahau, Maui, 

Honokahau ditch at 160-161 

Honolii River near Hilo, Hawaii, at Kai- 

wiki 213-215 

near Hilo, Hawaii, below mouth of Ki- 
kola Stream. 381 

Honolua ditch near Honokahau, Maui 158 

Honolua Stream, Maui, Honokahau ditch 

above 162 

Honolua Stream basin (Maui), measurements 

in 158 

Honolulu, Oahu, Kahuawai Spring near.. 110-111 

Lulumaho ditch near 113-114 

Mahoe Spring at or near 104-105, 128 

Manoa Stream near (at College of Hawaii) 108 

(at upper end o f valley) 106-107 

(at Waialae road) 108-109 

Nuuanu Stream at 111-113 

(at Luakaha weir) 115-116 

Pauoa Stream near 109 

Pukele Stream near 104-105 

Waiomea Stream at 100-102 

(above Pukele Stream) 102-104 

Honomu, Hawaii, Honomu Stream at 381 

Kapahehe Stream near 381 

Makea Stream near 381 

Makoewai Stream near 381 

Honopou Stream near Huelo, Maui 193-194 

Hoolawaliilii Stream near Huelo, Maui 190-191 

Hoolawanui Stream near Huelo, Maui 191-193 

Hooleinakaunualihua ditch (Kauai) below 

county road 98 

Hooleinakaunualihua Stream below county 

road (Kauai) 98 

Howard, E. J., work of 25 

Huelo, Maui, Alo Stream near 158-169 

Center ditch near 186-188 

Haiku ditch near 208 

Haipuaena Stream near 164-166 

Halehaku Stream near 194-195 

Honopou Stream near 193-194 

Hoolawaliilii Stream near 190-191 

Hoolawanui Stream near 191-193 

Kailua Stream near 189 

Koolau ditch near 209 

Lowrie ditch near 207 

Nailiilihaele Stream near 1S8-189 

New Hamakua ditch near 200-204 

at Halehaku weir 199 

near Nailiilihaele weir 198 

Old Hamakua ditch at 204-205 

Oopuola Stream near 171-172 

Opana ditch near 196-197 

Opana Stream near 196 

Puohakamoa Stream near 166-167 

Spreckels ditch near 172-186 

Waikamoi Stream near 169-171 

Huleia River basin (Kauai), measurements 

in 63-64 

Huleia River near Lihue, Kauai 63-64, 98 



INDEX. 



389 



I. Page. 

Iao Stream basin (Maui), measurements in. 137-140 

Iao Stream near Wailuku, Maui 137-139 

Investigations, authority for 9 

scope of 10-11 

lrwins flume, Kailua Valley, Qahu, Makawao 

ditch at 128 

K. 

Kaapaa, Kauai, Kaehulua Stream near 80-81 

■ Kaehulua Stream (North Fork) near 79-80 

Kaehulua Stream (South Fork) near 81-82 

Kaapua Falls (Kauai), Kalihiwai River near 98 
Kaehulua Stream at Kuhinoa weir, near 

Kapaa, Kauai.... 80-81 

Kaehulua Stream basin (Kauai), measure- 
ments in, 79-82 

Kaehulua Stream (North Fork) at Kainahola 

■weir, near Kapaa, Kauai 79-90 

Kaehulua Stream (South Fork) at Wainamu- 

amu weir, near Kapaa, Kauai.. . 81-82 
Kahakuloa, near Waihee, Maui, Kahakuloa 

Stream at 129-130 

near Wailuku, Maui, Kahakuloa Stream 

above 162 

Kahakuloa Stream basin (Maui), measure- 
ments in 129-130 

Kahanaiki Stream in Kailua Valley, Oahu. . . 128 

Stream near Waimanalo, Oahu 121 

Kahiliholo Stream at Kilauea, Kauai 98 

Kahoma ditch near Lahaina, Maui 156-157 

Kahoma Stream b^asin (Maui), measurements 

in 155-157 

Kahoma Stream near Lahaina, Maui 155 

Kahuawai Spring near Honolulu, Oahu 110- 

111,128 
near Honolulu, Oahu, Pauoa Stream 

below 109 

Kaieie Stream near Hilo, Hawaii 381 

Kailua Stream near Huelo, Maui 189 

near Waimanalo, Oahu .- 122 

near Wong Leong ditch, Kailua Valley, 

Oahu 128 

Kailua Valley, box flume ditch in 128 

Kahanaiki Stream in 128 

Makawao ditch in 128 

Kaimi S tream near W aimanalo , O ahu 124 

Kainahola weir, near Kapaa, Kauai, Kaehu- 
lua Stream (North Fork) at 79-80 

Kaiwiki, near Hilo, Hawaii, Honolii River 

at 213-215 

Kalihiwai ditch at Kilauea, Kauai 98 

Kalihiwai River, Kauai, above mouth 98 

near Kaapua Falls.; 98 

Kilauea, Kauai 90 

Kalihiwai River (West Branch), Kauai, 

above confluence 98 

Kalihiwai River basin, Kauai, measurements 

in 90 

Kalooa Stream near Hilo, Hawaii 381 

Kaluanui ditch at Puuomalei, near Hama- . 

kuapoko, Maui 205-206 

Kamakalepo Stream near Waimanalo, Oahu. 123 

Kamenehune ditch near Waimea, Kauai 47-48 

Kamooloa ditch at Lihue, Kauai 98 

Kanaha ditch near Lihue, Kauai 76-77 



Page. 

Kaneha ditch near Kealia, Kauai 86-87 

Kaneohe, Oahu, Kepo ditch at 128 

Old Waikalua ditch at 128 

rice-mill ditch at 128 

"^ Waikalua ditch at 128' 

waste ditch at 128 

Kapaa, Kauai, Akulikuli Spring near 84 

Kapaa River near 82-84 

Konohiki stream near 113-1 14 

Kuehulua stream near 80-81 

Kuehulua stream (North Fork) near 79-80 

Kuehulua stream (South Fork) near 81-82 

Kapaa River at Kapahi, near Kapaa, Kauai. . 82-84 
Kapaa River basin (Kauai), measurements 

in 82-87 

Kapahehe Stream near Honomu, Hawaii 381 

Kapahi, near Kapaa, Kauai, Kapaa River at. 82-84 

Kapahi ditch at 85-86 

Kapaia, near Lihue, Kauai, Hanamaulu 

River at . . -. 64-66 

Kapaia Stream (East Branch), Kauai, below 

county road 98 

Kapeha Stream near Pepeekeo, Hawaii 381 

Kapue flume near Hilo, Hawaii 381 

Kapue River near Hilo, Hawaii 381 

Kauaula ditch near Lahaina, Maui 152-154 

Kauaula Stream basin (Maui), measurements 

in 151-154 

Kauaula Stream near Lahaina, Maui 151-152 

Kaua ditch at Hanalei, Kauai 98 

Kauai, ditch seepage and losses on 99-1C0 

gaging station on 25-26 

miscellaneous measurements on 98 

pumped water on 99 

Kauaikanana S tream near Waimea, Kaua i . . . 98 

Kawaikoi Stream near Waimea, Kauai 35-37 

Kawainui River at Pepeekeo, near Hilo, 

Hawaii 215-216 

near Waipio, Hawaii 367-368 

Kawi Stream near Lihue, Kauai 75-76 

Keahua Stream near Lihue, Kauai 75 

Kealia, Kauai, Anahola ditch near 89-90 

Anahola River near 87-88 

Kaneha ditch near 86-87 

Keanae, Maui, Koolau ditch near 162-164 

Kekaha ditch near Waimoa, Kauai 40-45 

Kennedy, H. H., work of 25 

Kepo ditch at Kaneohe, Oahu 128 

Kiaiakua ditch at Hanalei, Kauai 98 

Kiaiakua Stream at Hanalei, Kauai 98 

Kikola Stream near Hilo, Hawaii 381 

near Hilo, Hawaii, Honolii River below. 381 

Kilauea, Kauai, Kahiliholo Stream at 98 

Kalihiwai ditch at 98 

Kalihiwai River near 90 

Kilauea River at 98 

Moloaa Stream at 98 

Papaa Stream at 98 

Poakuma Stream at 98 

Waiule ditch at 98 

Kiokala, Anahola ditch at 89-90 

Anahola River at 87-89 

Kohala ditch at Honokane weir, near Kohala, 

Hawaii 376-380 

near Kohala, Hawaii 371-380 

near Kohala, Hawaii (at Awini weir). . 372-376 



390 



INDEX. 



Page. 
Kohala group of streams, Hawaii, measure- 
ments on 371-380 

Koiawa Stream near Waipio, Hawaii, Waipio 

River below „ 368 

Koola, Kauai, Omuu Stream at 98 

Poeloelo Stream at 98 

"Waihohonu Stream at 98 

Wilcox ditch near 98 

KonohiM Stream at Makakualele makai weir, 

near Kapaa, Kauai. 78-79 

at Makakualele mauka weir, near Kapaa, 

Kauai... 77-78 

Konohiki Stream basin (Kauai), measure- 
ments in 77-79 

Koolau ditch near Huelo, Maui 209 

Koolau ditch near Keanae, Maui 162-164 

Koolau ditch region, Maui, measurements in 162-164 
Koula, near Eleele, Kauai, Hanapepe ditch at 59-60 

Hanapepe River at 55-57 

Kuhinoa weir, near Kapaa, Kauai, Kaehulua 

Stream at 80-81 

Kukuihaele, Hawaii, New Hamakua ditch 

near 370-371 

Kumunuiakea River near Hilo, Hawaii 381 

Kuna ditch near Hanalei, Kauai 93-95 

L. 

Lahaina, Maui, discharge of pumps at 209-211 

Honokawai ditch near 157 

Kahoma ditch near 156-157 

Kahoma Stream near 155 

Kauaula ditch near 152-154 

Kauaula Stream near 151-152 

Lahainaluna Stream near 154-155 

Launiupoko Stream near ." 149-150 

Lahainaluna Stream basin (Maui), measure- 
ments in 154-155 

Lahainaluna Stream near Lahaina, Maui. . 154-155 

Larrison, G. K., work of 25 

Launiupoko Stream basin (Maui), measure- 
ments in 149-150 

Launiupoko Stream near Lahaina, Maui. . . 149-150 

Lawai, Kauai, Lawai ditch at 98 

Lawai Stream at 98 

Lawai Stream at Homestead, Kauai 98 

Lihue, Kauai, Hakenanahu Stream at 98 

Lihue, Kauai, Halehaku Stream at 98 

Lihue, Kauai, Hanamaulu ditch near 70-71 

Hanamaulu River near 64-66 

Huleia River near 63-64, 98 

Kamooloa ditch at 98 

Kanaha ditch near 76-77 

Kawi Stream near 75-76 

Keahua Stream near 75 

Lihue ditch near 68-69 

Nawiliwili Stream near 98 

Puhi Stream near 98 

Uhau Iole Stream near 73-74 

Wailua River (North Pork) near 71-73 

Wailua River (North Fork, East Branch 

of) near 74 

Wailua River (South Fork) near 66-68 

Linoli Springs near Ponolu, Hawaii 381 

Lowrie ditch at Opana weir, near Huelo, 

Maui 207 



Luakaha weir in Nuuanu Valley, near Hono- 
lulu, Oahu 115-116 

Lulumaho ditch in Nuuanu Valley, near 

Honolulu, Oahu 113-114 

Lumahai River basin (Kauai), measurements 

in 95 

Lumahai R i ver near Wainiha, Kauai £5 

M. 

McCandless ditch in Waiahole Valley 128 

Mahoe Springs, Oahu, Pukele Stream at or 

near 104-105,128 

Maili River near Hilo, Hawaii 3S1 

Makakualele makai weir, near Kapaa, Kauai, 

Konohiki Stream at 78-79 

Makakualele mauka weir, near Kapaa, K«uai, 

Konohiki Stream at 77-78 

Makaueli, Kauai, Hanapepe ditch near 98 

Makawao ditch at Irwins flume, Kailua Val- 
ley, Oahu 128 

near Waimanalo, Oahu 125 

Makawao Stream near Waimanalo, Oahu.. 124-125 

Makaweli, Kauai, Olokele ditch near. 50-52 

Makaweli River basin (Kauai), measure- 
ments in 48-55 

Makaweli River near Waimea, Kauai 48-50 

Makea Stream near Honomu, Hawaii 381 

Makoewai Stream near Honomu, Hawaii 381 

Maniania ditch near Wailuku, Maui 139-140 

Manianiaula, near Waikane, Oahu, Waiahole 

Stream at 117-119 

Manoa Stream at College of Hawaii, near 

Honolulu, Oahu 108 

at Waialae road, near Honolulu, Oahu. 108-109 

near Honolulu, Oahu 106-107 

Manoa Stream basin (Oahu), measurements 

in 106-111 

Manuahi Stream (Kauai) above Hanapepe 

R iver 98 

Martin, W. F., work of 25 

Maui, gaging stations on 27-29 

miscellaneous measurements on 162, 209 

precipitation on 384 

pumped water on 209-211 

Miner's inch, definition of 17 

Miscellaneous measurements on: 

Hawaii , 381 

Kauai 98 

Maui 162,209 

Oahu 128 

Mohihi Stream near Waimea, Kauai 38-39 

Moloaa Stream at Kilauea, Kauai 98 

N. 

Nailiilihaele Stream near Huelo, Maui 188-189 

Nailiilihaele weir, near Huelo, Maui, New 

Hamakua, ditch at 198 

Nawiliwili S tream near Lihue, Kauai 98 

New Hamakua ditch at Halehaku weir, near 

Huelo, Maui 199 

at Nailiilihaele weir, near Huelo, Maui.. . 198 
at Waima Stream, near Waipio, Hawaii. 369-370 

near Huelo, Maui. 200-204 

near Kukuihaele, Hawaii 370-371 



INDEX. 



391 



North Waiehu Stream near Wailuku, Maui. 135-136 

No. 1 Stream near Hilo, Hawaii 3S1 

Nuuanu Stream at Honolulu, Oahu 111-113 

Nuuanu Stream basin (Oahu), measurements 

in 111-116 

Nuuanu Valley, near Honolulu, Oahu, 

Luakaha weir in 115-116 

Lulumaho ditch in 113-114 

O. 

Oahu, artesian wells on 128-129 

gaging stations on 20-27 

miscellaneous measurements on 128 

precipitation on 384 

Office methods of computing stream flow 19-22 

Old Hamakua ditch at Opana weir, near 

Huelo, Maui 204-205 

Old Waikalua ditch at Kaneohe, Oahu 128 

Olawalu, Maui, Olowalu ditch No. 1, near. . 147-149 

"Ukumehame S tream near 146-147 

Olokele ditch near Makaweli, Kauai 50-52 

near Waimea, Kauai 52-53 

Olowalu ditch No. 1, near Olowalu, Maui. . 147-149 
Olowalu Stream basin (Maui), measurements 

in. 147-149 

Omuu Stream at Koloa, Kauai 98 

Onomea Stream near Papaikou, Hawaii 3C1 

Oopuola Stream near Huelo, Maui 171-172 

Opana ditch near Huelo, Maui 196-197 

Opana Stream near Huelo, Maui * 196 

Opana weir, near Huelo, Maui, Lowrie ditch 

at 207 

Old Hamakua ditch at 204-205. 

P. 

Palolo (Everett) ditch near Waikapu, Maui. 144-146 
Palolo Stream basin (Oahu), measurements 

in 100-105 

Papaa Stream at Kilauea, Kauai 98 

Papaikou, Hawaii, Hanawai Stream near 381 

Onomea Stream near , ,381 

Pauoa Stream below Kahuawai Spring, near 

Honolulu, Oahu 109 

Pauoa Valley, Oahu, Kahuawai Spring in. . . 128 
Peahi weir, near Huelo, Maui, Haiku ditch at. 208 

Pepeekeo, Hawaii, Kapeha Stream near 381 

Kawainui River at 215-216 

Pepeekeo Stream near 381 

Waiaama Stream near 381 

Pierce, C. H., work of *. 25 

Piihonua, near Hilo, Hawaii, stations £t. . . 216-218 

Poakumu Stream at Kilauea, Kauai 98 

Poeloelo Stream at Koloa, Kauai 98 

Pohakea Stream near Waimanalo, Oahu... 122-123 

Pohakunanaka R iver near Hilo, Hawaii 381 

Ponolu, Hawaii, Linoli Springs near 381 

Poowaiomahaihai ditch near Waimea, Kauai 53-54 

Precipitation, records of 383-385 

Fuhi Stream near Lihue, Kauai 98 

Pukele Stream, near Honolulu, Oahu, Wai- 

omao Stream above 102-404 

Pukele Stream at or near Mahoe Springs, near • 

Honolulu, Oahu 104-105, 128 

Pukihae Stream near Hilo, Hawaii 381 

Puohakamoa Stream near Huelo, Maui 166-167 



Page. 
Puuomalei, near Hamakuapoko, Maui, Kalu- 

anui ditch at 205-206 

R. 

Rain gaging in Hawaiian Islands 381-385 

Run-off, definition of. 17 

field methods of measuring 11-16 

office methods of computing 19-22 

terms used in expressing 16 

S. 

Scope of investigations 10-11 

Second-foot, definition of 16-17 

South "Waiehu ditch near Wailuku, Maui 162 

South Waiehu Stream near Wailuku, 

Maui 136-137 

Spreckels ditch (West Maui) near Waihee, 

Maui 134-135 

Spreckels ditch (East Maui) near Huelo, 

Maui 172-186 

Spreckels ditch region (East Maui), measure- 
ments in 164-186 

Stations, records at, on Hawaii Island 212-381 

records at, on Kauai Island 34-100 

on Maui Island -. 129-211 

on Oahu Island 100-129 

Stewart, J. B., work of 25 

Stone Dam ditch, near Kilauea, Kauai, seep- 
age and loss from 99 

Stream measurement, accuracy of 24 

field methods of 11-16 

office methods of computing 19-22 

T. 

Tables, explanation of 22-24 

Terms, definitions of 16-17 

U. 

Uhau Iole Stream, below falls, Kauai 98 

near Lihue, Kauai 73-74 

Ukumehame Stream basin (Maui), measure- 
ments in 146-147 

Ukumehame Stream near Olowalu, Maui.. 146-147 
Upper Waiahole Valley, Oahu, Halona 

Stream in 128 

Halona Stream (North Fork) in ........ . . 12S 

Uwau Stream in 128 

Wahi Streamin 128 

Waianu Stream in 128 

Uwau Stream in Upper Waiahole Valley, 

Oahu *128 

V. 

Velocity-area measurements, methods cf 

making 12-16 

W. 

Wahiaua Stream at Eleele, Kauai 98 

Waiaama Stream near Pepeekeo, Hawaii 381 

Waiahole Stream at Manianiaula, near Wai- 

kane, Oahu 117-119 

at Waiahole, near Waikane, Oahu. £. . 119-121 
Waiahole Stream basin (Oahu), measure- 
ments in 116-127 



392 



INDEX. 



Page. 
Waiahole Valley, Oahu, McCandless ditch 

in 128 

See also Upper Waiahole Valley. 

Waiakoali Stream near Waimea, Kauai 37-38 

Waialae road, near Honolulu, Oahu, Manoa 

Stream at 108-109 

Waialae Stream near Waimea, Kauai.... 39-40 

Waianu Stream in Upper Waiahole Valley, 

Oahu... 128 

Waiehu Falls, near Lihue, Kauai, Wailua 

River (South Fork) above 66-68 

Waiehu Stream basin (Maui), measurements 

in 135-137 

See also North Waiehu Stream; South 
Waiehu Stream. 

Waihee, Maui, Kahakuloa Stream near 129-130 

Spreckels ditch (West Maui) near 134-135 

Waihee canal near 132-133 

Waihee Stream 130-132 

Waihee canal near Wailuku, Maui 134-135 

Waihee Stream basin (Maui), measurements 

in 130-135 

Waihi Stream in Upper Waiahole Valley, 

Oahu 128 

Waihina canal, Kauai, seepage and loss from. 99 

Waihohonu Stream at Koloa, Kauai 98 

Waikalua ditch at Ah Lo flume, Kaneohe, 

Oahu 128 

at Kaneohe, Oahu 128 

See also Old Waikalua ditch. 

Waikamoi Stream near Huelo, Maui 169-171 

Waikane, Oahu, Waikane Stream near 116-117 

Waiahole Stream near (at Manianiaula) 117-119 

(at Waiahole) 119-121 

Waikane Stream basin (Oahu), measure- 
ments in 116-117 

Waikane Stream near Waikane, Oahu 116-117 

Waikapu, Maui, Palolo (Everett) ditch 

near 144-146 

South Side Waikapu ditch near 142-144 

Waikapu Stream near . , 141-142 

Waikapu Stream basin (Maui), measure- 
ments in 141-146 

Wailua River (North Fork) above mouth of 

East Branch 98 

near Lihue, Kauai 71-73 

Wailua River (North Fork, East Branch of) 

~ near Lihue, Kauai 74 

Wailua River (South Fork) above Waiehu 

Falls, near Lihue, Kauai 66-68 

Wailua River basin (Kauai), measurements 

in 66-G7 

Wailuku, Maui, Iao Stream near 137-139 

Kahakuloa Stream near 1C2 

Maniania ditch near 139-140 

North Waiehu Stream near 135-136 

South Waiehu ditch near : . . 1C2 



Page. 

Wailuku, Maui, South Waieh j. Stream near 136-137 
Waihee canal near 134-135 

Wailuku River near Hilo, Hawaii. 212-213 

Hilo Electric Light Co. weir at 381 

Waimanalo, Oahu, Kahanaiki Stream near. . 121 

Kailua Stream near 122 

Kaimi Stream near * 124 

Kamakalepo Stream near 123 

Makawao ditch near 125 

Makawao Stream near 124-125 

Pohakea Stream near 122-123 

pump ditch near .... 127-128 

Waimanalo ditch near 126-127 

Wong Leong ditch near 125-126 

Waimanu, Hawaii, Waimanu Stream near . . 381 

Waimea, Kauai, Halehaku Stream (North 

Fork) at 98 

Halekua Stream near 50 

Kamenehue ditch near 47-^8 

Kauaikanana Stream near 98 

Kawaikoi Stream near 35-37 

Kekaha ditch near 40-45 

Makaweli River near 48-50 

Mohihi Stream near 38-39 

Olokele ditch near 52-53 

Poowaiomahaihai ditch near 53-54 

Waiakoali Stream near 37-38 

Waialae Stream near 38-39 

Waimea ditch near 45-47 

Waimea River at or near 34-35, 98 

Waimea River basin (Kauai), measurements 

in 34-48 

Wainamuamu weir, near Kapaa, Kauai, 
Kaehulua Stream (South Fork) 
at 81-82 

Wainiha, Kauai, Lumahai River near 95 

Wainiha canal near 97-98 

Wainiha River near 95-97 

Waiomao Stream above Pukele Stream, 

near Honolulu, Oahu . . 102-104 

near Honolulu, Oahu 100-102 

Waipio, Hawaii, Kawainui River near 367-368 

New Hamakua ditch near 369-370 

Waipio River near (below Koiawe) 368 

(below Waima) 309 

Waiuli ditch at Kilauea, Kauai 98 

near Kilauea, Kauai, seepage and loss 

from 99 

Weir measurements, advantages and disad- 
vantages of 11-12 

West Maui, miscellaneous measurements on. 162 

White, G. R., work of 25 

Wilcox ditch near Koloa, Kauai 98 

Wong Leong ditch, Kailua Valley, Oahu, 

Kailu Stream near 128 

Wong Leong ditch near Waimanalo, Oahu. 125-126 

Wood, B . D . , work of 25 

Work, division of 24-25 



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